1.5.0

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "vue-nonograms-solid",
-  "version": "1.0.5",
+  "version": "1.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "vue-nonograms-solid",
-      "version": "1.0.5",
+      "version": "1.5.0",
       "dependencies": {
         "fireworks-js": "^2.10.8",
         "flag-icons": "^7.5.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-nonograms-solid",
-  "version": "1.0.5",
+  "version": "1.5.0",
   "type": "module",
   "scripts": {
     "dev": "vite",

src/components/CustomGameModal.vue

@@ -1,13 +1,15 @@
 <script setup>
-import { ref } from 'vue';
+import { ref, computed } from 'vue';
 import { usePuzzleStore } from '@/stores/puzzle';
 import { useI18n } from '@/composables/useI18n';
+import { calculateDifficulty } from '@/utils/puzzleUtils';
 
 const emit = defineEmits(['close']);
 const store = usePuzzleStore();
 const { t } = useI18n();
 
 const customSize = ref(10);
+const fillRate = ref(50);
 const errorMsg = ref('');
 
 const snapToStep = (value, step) => {
@@ -19,6 +21,20 @@ const handleSnap = () => {
   customSize.value = snapToStep(Number(customSize.value), 5);
 };
 
+const difficultyLevel = computed(() => {
+  return calculateDifficulty(fillRate.value / 100);
+});
+
+const difficultyColor = computed(() => {
+  switch(difficultyLevel.value) {
+    case 'extreme': return '#ff3333';
+    case 'hardest': return '#ff9933';
+    case 'harder': return '#ffff33';
+    case 'easy': return '#33ff33';
+    default: return '#33ff33';
+  }
+});
+
 const confirm = () => {
   const size = parseInt(customSize.value);
   if (isNaN(size) || size < 5 || size > 80) {
@@ -26,7 +42,7 @@ const confirm = () => {
     return;
   }
   
-  store.initCustomGame(size);
+  store.initCustomGame(size, fillRate.value / 100);
   emit('close');
 };
 </script>
@@ -52,6 +68,29 @@ const confirm = () => {
           <span>80</span>
         </div>
       </div>
+
+      <p>{{ t('custom.fillRate') }}</p>
+      <div class="input-group">
+        <div class="range-value">{{ fillRate }}%</div>
+        <input 
+          type="range" 
+          v-model="fillRate" 
+          min="10" 
+          max="90"
+          step="5"
+        />
+        <div class="range-scale">
+          <span>10%</span>
+          <span>90%</span>
+        </div>
+      </div>
+
+      <div class="difficulty-indicator">
+        <span class="label">{{ t('custom.difficulty') }}:</span>
+        <span class="value" :style="{ color: difficultyColor }">
+          {{ t(`difficulty.${difficultyLevel}`) }}
+        </span>
+      </div>
       
       <p v-if="errorMsg" class="error">{{ errorMsg }}</p>
 
@@ -87,6 +126,7 @@ const confirm = () => {
   border: 1px solid var(--accent-cyan);
   box-shadow: 0 0 50px rgba(0, 242, 255, 0.2);
   animation: slideUp 0.3s ease;
+  transition: all 0.3s ease-in-out;
 }
 
 h2 {
@@ -161,6 +201,31 @@ input[type="range"]::-moz-range-thumb {
     font-size: 0.85rem;
 }
 
+.difficulty-indicator {
+    margin: 20px 0;
+    font-size: 1.2rem;
+    display: flex;
+    justify-content: center;
+    gap: 10px;
+    align-items: center;
+    white-space: nowrap;
+    height: 1.5em; /* Reserve space for one line of text */
+}
+
+.difficulty-indicator .label {
+    color: var(--text-color);
+}
+
+.difficulty-indicator .value {
+    font-weight: bold;
+    text-transform: uppercase;
+    text-shadow: 0 0 10px currentColor;
+    transition: color 0.3s ease;
+    display: inline-block;
+    min-width: 120px; /* Reserve space for longest text */
+    text-align: left;
+}
+
 .error {
     color: #ff4d4d;
     font-size: 0.9rem;

src/components/WinModal.vue

@@ -4,9 +4,8 @@ import { Fireworks } from 'fireworks-js';
 import { usePuzzleStore } from '@/stores/puzzle';
 import { useI18n } from '@/composables/useI18n';
 import { useTimer } from '@/composables/useTimer';
-import xIcon from '@/assets/brands/x.svg';
+import { Download } from 'lucide-vue-next';
-import facebookIcon from '@/assets/brands/facebook.svg';
+import { calculateDifficulty } from '@/utils/puzzleUtils';
-import whatsappIcon from '@/assets/brands/whatsapp.svg';
 
 const store = usePuzzleStore();
 const { t } = useI18n();
@@ -88,8 +87,9 @@ const buildShareCanvas = () => {
   const padding = 28;
   const headerHeight = 64;
   const footerHeight = 28;
+  const infoHeight = 40; // New space for difficulty/guide info
   const width = boardSize + padding * 2;
-  const height = boardSize + padding * 2 + headerHeight + footerHeight;
+  const height = boardSize + padding * 2 + headerHeight + footerHeight + infoHeight;
   const scale = window.devicePixelRatio || 1;
   const canvas = document.createElement('canvas');
   canvas.width = width * scale;
@@ -109,6 +109,24 @@ const buildShareCanvas = () => {
   ctx.fillText(t('app.title'), padding, padding + 10);
   ctx.font = '600 16px "Segoe UI", sans-serif';
   ctx.fillText(`${t('win.time')} ${formattedTime.value}`, padding, padding + 34);
+  
+  // Difficulty & Density Info
+  const densityPercent = Math.round(store.currentDensity * 100);
+  const difficultyKey = calculateDifficulty(store.currentDensity);
+  let diffColor = '#33ff33';
+  if (difficultyKey === 'extreme') diffColor = '#ff3333';
+  else if (difficultyKey === 'hardest') diffColor = '#ff9933';
+  else if (difficultyKey === 'harder') diffColor = '#ffff33';
+  
+  const difficultyText = t(`difficulty.${difficultyKey}`);
+  ctx.font = '600 14px "Segoe UI", sans-serif';
+  
+  // Right aligned difficulty info
+  const diffLabel = `${t('win.difficulty')} ${difficultyText} (${densityPercent}%)`;
+  const diffWidth = ctx.measureText(diffLabel).width;
+  ctx.fillStyle = diffColor;
+  ctx.fillText(diffLabel, width - padding - diffWidth, padding + 34);
+
   const gridX = padding;
   const gridY = padding + headerHeight;
   ctx.fillStyle = 'rgba(255, 255, 255, 0.06)';
@@ -152,6 +170,19 @@ const buildShareCanvas = () => {
       }
     }
   }
+
+  // Guide Usage Info (Dirty Flag)
+  if (store.guideUsageCount > 0) {
+      ctx.fillStyle = '#ff4d4d';
+      ctx.font = '600 14px "Segoe UI", sans-serif';
+      
+      const totalCells = store.size * store.size;
+      const percent = Math.min(100, Math.round((store.guideUsageCount / totalCells) * 100));
+      const guideText = t('win.usedGuide', { count: store.guideUsageCount, percent });
+      
+      ctx.fillText(`⚠️ ${guideText}`, padding, height - padding - footerHeight + 10);
+  }
+
   ctx.fillStyle = 'rgba(255, 255, 255, 0.75)';
   ctx.font = '500 14px "Segoe UI", sans-serif';
   ctx.fillText(appUrl, padding, height - padding + 6);
@@ -183,7 +214,7 @@ const buildShareUrl = (target, text, url) => {
   const encodedText = encodeURIComponent(text);
   const encodedUrl = encodeURIComponent(url);
   if (target === 'x') {
-    return `https://twitter.com/intent/tweet?text=${encodedText}&url=${encodedUrl}`;
+    return `https://x.com/intent/tweet?text=${encodedText}&url=${encodedUrl}`;
   }
   if (target === 'facebook') {
     return `https://www.facebook.com/sharer/sharer.php?u=${encodedUrl}&quote=${encodedText}`;
@@ -197,29 +228,48 @@ const buildShareUrl = (target, text, url) => {
 const shareTo = async (target) => {
   if (shareInProgress.value) return;
   shareInProgress.value = true;
+  
+  const text = shareText.value;
+  const url = window.location.href;
+  const shareUrl = buildShareUrl(target, text, url);
+
   try {
-    const blob = await createShareBlob();
+    // Try native share first if available (supports images)
-    if (!blob) return;
+    if (navigator.share && navigator.canShare) {
-    const file = new File([blob], `nonogram-${store.size}x${store.size}.png`, { type: 'image/png' });
+      const blob = await createShareBlob();
-    const text = shareText.value;
+      if (blob) {
-    const url = window.location.href;
+        const file = new File([blob], `nonogram-${store.size}x${store.size}.png`, { type: 'image/png' });
-    if (navigator.share && navigator.canShare && navigator.canShare({ files: [file] })) {
+        if (navigator.canShare({ files: [file] })) {
-      await navigator.share({
+          await navigator.share({
-        files: [file],
+            files: [file],
-        text,
+            text,
-        title: t('app.title'),
+            title: t('app.title'),
-        url
+            url
-      });
+          });
-      return;
+          return;
+        }
+      }
     }
-    await downloadShareImage();
+  } catch (error) {
-    const shareUrl = buildShareUrl(target, text, url);
+    if (error.name === 'AbortError') {
-    if (shareUrl) {
+      return; // User cancelled native share, do nothing
-      window.open(shareUrl, '_blank', 'noopener');
     }
+    // Other errors -> fall through to fallback
   } finally {
     shareInProgress.value = false;
   }
+
+  // Fallback: Direct Link + Download
+  // Open window immediately if possible (though we awaited above, so it might be blocked, 
+  // but we can't do much about it if we want to try native share first).
+  // Ideally, for Desktop, navigator.share is undefined so we skip the await above.
+  
+  if (shareUrl) {
+    window.open(shareUrl, '_blank', 'noopener');
+  }
+  
+  // Trigger download as "screenshot support"
+  downloadShareImage();
 };
 
 onMounted(() => {
@@ -279,19 +329,23 @@ onUnmounted(() => {
       <div class="share">
         <div class="share-title">{{ t('win.shareTitle') }}</div>
         <div class="share-buttons">
+          <!-- X (Twitter) -->
           <button class="btn-neon secondary share-btn" :disabled="shareInProgress" :aria-label="t('win.shareX')" @click="shareTo('x')">
-            <img :src="xIcon" alt="" class="share-icon" />
+            <svg viewBox="0 0 24 24" fill="currentColor" class="share-icon"><path d="M18.901 3H22l-7.21 8.26L23 21h-6.66L11.13 14.76 5.66 21H2.56l7.73-8.83L1 3h6.8l4.63 5.56L18.9 3h.001zm-1.2 15.9h1.77L6.44 5.1H4.44l13.26 13.8z"/></svg>
           </button>
+          <!-- Facebook -->
           <button class="btn-neon secondary share-btn" :disabled="shareInProgress" :aria-label="t('win.shareFacebook')" @click="shareTo('facebook')">
-            <img :src="facebookIcon" alt="" class="share-icon" />
+            <svg viewBox="0 0 24 24" fill="currentColor" class="share-icon"><path d="M24 12.073c0-6.627-5.373-12-12-12s-12 5.373-12 12c0 5.99 4.388 10.954 10.125 11.854v-8.385H7.078v-3.47h3.047V9.43c0-3.007 1.791-4.669 4.533-4.669 1.312 0 2.686.235 2.686.235v2.953H15.83c-1.491 0-1.956.925-1.956 1.874v2.25h3.328l-.532 3.47h-2.796v8.385C19.612 23.027 24 18.062 24 12.073z"/></svg>
           </button>
+          <!-- WhatsApp -->
           <button class="btn-neon secondary share-btn" :disabled="shareInProgress" :aria-label="t('win.shareWhatsapp')" @click="shareTo('whatsapp')">
-            <img :src="whatsappIcon" alt="" class="share-icon" />
+            <svg viewBox="0 0 24 24" fill="currentColor" class="share-icon"><path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.008-.57-.008-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413Z"/></svg>
+          </button>
+          <!-- Download Screenshot (Compact) -->
+          <button class="btn-neon secondary share-btn" :disabled="shareInProgress" :aria-label="t('win.shareDownload')" @click="downloadShareImage">
+            <Download :size="20" />
           </button>
         </div>
-        <button class="btn-neon secondary share-download" :disabled="shareInProgress" @click="downloadShareImage">
-          {{ t('win.shareDownload') }}
-        </button>
       </div>
 
       <div class="actions">

src/composables/useI18n.js

@@ -29,6 +29,12 @@ const messages = {
     'custom.cancel': 'Anuluj',
     'custom.start': 'Start',
     'custom.sizeError': 'Rozmiar musi być między 5 a 80!',
+    'custom.fillRate': 'Wypełnienie',
+    'custom.difficulty': 'Poziom trudności',
+    'difficulty.easy': 'Łatwy',
+    'difficulty.harder': 'Trudniejszy',
+    'difficulty.hardest': 'Najtrudniejszy',
+    'difficulty.extreme': 'Ekstremalny',
     'win.title': 'GRATULACJE!',
     'win.message': 'Rozwiązałeś zagadkę!',
     'win.time': 'Czas:',
@@ -39,6 +45,8 @@ const messages = {
     'win.shareFacebook': 'Facebook',
     'win.shareWhatsapp': 'WhatsApp',
     'win.shareDownload': 'Pobierz zrzut',
+    'win.difficulty': 'Poziom:',
+    'win.usedGuide': 'Podpowiedzi: {percent}% ({count})',
     'pwa.installTitle': 'Zainstaluj aplikację i graj offline',
     'pwa.installMobile': 'Dodaj do ekranu głównego',
     'pwa.installDesktop': 'Zainstaluj na komputerze',
@@ -128,6 +136,12 @@ const messages = {
     'custom.cancel': 'Cancel',
     'custom.start': 'Start',
     'custom.sizeError': 'Size must be between 5 and 80!',
+    'custom.fillRate': 'Fill Rate',
+    'custom.difficulty': 'Difficulty',
+    'difficulty.easy': 'Easy',
+    'difficulty.harder': 'Harder',
+    'difficulty.hardest': 'Hardest',
+    'difficulty.extreme': 'Extreme',
     'win.title': 'CONGRATULATIONS!',
     'win.message': 'You solved the puzzle!',
     'win.time': 'Time:',
@@ -138,6 +152,8 @@ const messages = {
     'win.shareFacebook': 'Facebook',
     'win.shareWhatsapp': 'WhatsApp',
     'win.shareDownload': 'Download screenshot',
+    'win.difficulty': 'Difficulty:',
+    'win.usedGuide': 'Hints: {percent}% ({count})',
     'pwa.installTitle': 'Install the app and play offline',
     'pwa.installMobile': 'Add to home screen',
     'pwa.installDesktop': 'Install on desktop',
@@ -279,9 +295,17 @@ const messages = {
     'custom.cancel': '取消',
     'custom.start': '开始',
     'custom.sizeError': '尺寸必须在 5 到 80 之间！',
+    'custom.fillRate': '填充率',
+    'custom.difficulty': '难度',
+    'difficulty.easy': '简单',
+    'difficulty.harder': '较难',
+    'difficulty.hardest': '最难',
+    'difficulty.extreme': '极限',
     'win.title': '恭喜！',
     'win.message': '你解开了谜题！',
     'win.time': '时间:',
+    'win.difficulty': '难度:',
+    'win.usedGuide': '使用指南: {count}',
     'win.playAgain': '再玩一次',
     'win.shareTitle': '分享你的结果',
     'win.shareText': '我在 {time} 内解开了 {size}x{size} 的数织！',
@@ -479,9 +503,17 @@ const messages = {
     'custom.cancel': 'Cancelar',
     'custom.start': 'Empezar',
     'custom.sizeError': '¡El tamaño debe estar entre 5 y 80!',
+    'custom.fillRate': 'Relleno',
+    'custom.difficulty': 'Dificultad',
+    'difficulty.easy': 'Fácil',
+    'difficulty.harder': 'Más difícil',
+    'difficulty.hardest': 'El más difícil',
+    'difficulty.extreme': 'Extremo',
     'win.title': '¡FELICIDADES!',
     'win.message': '¡Has resuelto el rompecabezas!',
     'win.time': 'Tiempo:',
+    'win.difficulty': 'Dificultad:',
+    'win.usedGuide': 'Guía usada: {count}',
     'win.playAgain': 'Jugar de nuevo',
     'win.shareTitle': 'Comparte tu resultado',
     'win.shareText': '¡Resolví un nonograma de {size}x{size} en {time}!',
@@ -545,9 +577,17 @@ const messages = {
     'custom.cancel': 'Annuler',
     'custom.start': 'Démarrer',
     'custom.sizeError': 'La taille doit être entre 5 et 80 !',
+    'custom.fillRate': 'Remplissage',
+    'custom.difficulty': 'Difficulté',
+    'difficulty.easy': 'Facile',
+    'difficulty.harder': 'Plus difficile',
+    'difficulty.hardest': 'Le plus difficile',
+    'difficulty.extreme': 'Extrême',
     'win.title': 'FÉLICITATIONS !',
     'win.message': 'Vous avez résolu le puzzle !',
     'win.time': 'Temps:',
+    'win.difficulty': 'Difficulté :',
+    'win.usedGuide': 'Guide utilisé : {count}',
     'win.playAgain': 'Rejouer',
     'win.shareTitle': 'Partagez votre résultat',
     'win.shareText': 'J’ai résolu un nonogramme {size}x{size} en {time} !',
@@ -611,9 +651,17 @@ const messages = {
     'custom.cancel': 'إلغاء',
     'custom.start': 'ابدأ',
     'custom.sizeError': 'يجب أن يكون الحجم بين 5 و80!',
+    'custom.fillRate': 'معدل الملء',
+    'custom.difficulty': 'الصعوبة',
+    'difficulty.easy': 'سهل',
+    'difficulty.harder': 'أصعب',
+    'difficulty.hardest': 'الأصعب',
+    'difficulty.extreme': 'أقصى',
     'win.title': 'تهانينا!',
     'win.message': 'لقد حللت اللغز!',
     'win.time': 'الوقت:',
+    'win.difficulty': 'الصعوبة:',
+    'win.usedGuide': 'تم استخدام الدليل: {count}',
     'win.playAgain': 'العب مرة أخرى',
     'win.shareTitle': 'شارك نتيجتك',
     'win.shareText': 'حللت نونوغرام {size}x{size} في {time}!',
@@ -743,9 +791,17 @@ const messages = {
     'custom.cancel': 'Отмена',
     'custom.start': 'Старт',
     'custom.sizeError': 'Размер должен быть от 5 до 80!',
+    'custom.fillRate': 'Заполнение',
+    'custom.difficulty': 'Сложность',
+    'difficulty.easy': 'Легкий',
+    'difficulty.harder': 'Сложный',
+    'difficulty.hardest': 'Очень сложный',
+    'difficulty.extreme': 'Экстремальный',
     'win.title': 'ПОЗДРАВЛЯЕМ!',
     'win.message': 'Вы решили головоломку!',
     'win.time': 'Время:',
+    'win.difficulty': 'Сложность:',
+    'win.usedGuide': 'Подсказок использовано: {count}',
     'win.playAgain': 'Сыграть снова',
     'win.shareTitle': 'Поделитесь результатом',
     'win.shareText': 'Я решил(а) нонограмму {size}x{size} за {time}!',
@@ -942,9 +998,17 @@ const messages = {
     'custom.cancel': 'Abbrechen',
     'custom.start': 'Start',
     'custom.sizeError': 'Die Größe muss zwischen 5 und 80 liegen!',
+    'custom.fillRate': 'Füllrate',
+    'custom.difficulty': 'Schwierigkeit',
+    'difficulty.easy': 'Einfach',
+    'difficulty.harder': 'Schwerer',
+    'difficulty.hardest': 'Am schwersten',
+    'difficulty.extreme': 'Extrem',
     'win.title': 'HERZLICHEN GLÜCKWUNSCH!',
     'win.message': 'Sie haben das Rätsel gelöst!',
     'win.time': 'Zeit:',
+    'win.difficulty': 'Schwierigkeit:',
+    'win.usedGuide': 'Hilfe benutzt: {count}',
     'win.playAgain': 'Erneut spielen',
     'win.shareTitle': 'Teilen Sie Ihr Ergebnis',
     'win.shareText': 'Ich habe ein {size}x{size} Nonogramm in {time} gelöst!',
@@ -3408,10 +3472,10 @@ const messages = {
     'pwa.installTitle': 'Qosymşany ornatyp, oflain oinañyz',
     'pwa.installMobile': 'Basty ekranğa qosu',
     'pwa.installDesktop': 'Jūmys stolyna ornatu',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Қолданба офлайн жұмыс істеуге дайын',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Жаңа мазмұн қолжетімді, жаңарту үшін қайта жүктеу түймесін басыңыз',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Қайта жүктеу',
-    'pwa.close': 'Close',
+    'pwa.close': 'Жабу',
     'language.label': 'Til tañdau',
     'theme.label': 'Taqyryp',
     'theme.system': 'Jüye',
@@ -3463,10 +3527,10 @@ const messages = {
     'pwa.installTitle': 'એપ્લિકેશન ઇન્સ્ટોલ કરો અને ઑફલાઇન રમો',
     'pwa.installMobile': 'હોમ સ્ક્રીનમાં ઉમેરો',
     'pwa.installDesktop': 'ડેસ્કટોપ પર ઇન્સ્ટોલ કરો',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'એપ્લિકેશન ઑફલાઇન કામ કરવા માટે તૈયાર છે',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'નવી સામગ્રી ઉપલબ્ધ છે, અપડેટ કરવા માટે રિકોડ બટન પર ક્લિક કરો',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'રીલોડ',
-    'pwa.close': 'Close',
+    'pwa.close': 'બંધ કરો',
     'language.label': 'ભાષા પસંદગી',
     'theme.label': 'થીમ',
     'theme.system': 'સિસ્ટમ',
@@ -3573,10 +3637,10 @@ const messages = {
     'pwa.installTitle': 'अॅप इन्स्टॉल करा आणि ऑफलाइन खेळा',
     'pwa.installMobile': 'होम स्क्रीनवर जोडा',
     'pwa.installDesktop': 'डेस्कटॉपवर इन्स्टॉल करा',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'अॅप ऑफलाइन कार्य करण्यासाठी तयार आहे',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'नवीन सामग्री उपलब्ध आहे, अपडेट करण्यासाठी रीलोड बटणावर क्लिक करा',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'रीलोड',
-    'pwa.close': 'Close',
+    'pwa.close': 'बंद करा',
     'language.label': 'भाषा निवड',
     'theme.label': 'थीम',
     'theme.system': 'सिस्टम',
@@ -3683,10 +3747,10 @@ const messages = {
     'pwa.installTitle': 'செயலியை நிறுவி ஆஃப்லைனில் விளையாடுங்கள்',
     'pwa.installMobile': 'முகப்புத் திரையில் சேர்',
     'pwa.installDesktop': 'டெஸ்க்டாப்பில் நிறுவு',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'செயலி ஆஃப்லைனில் வேலை செய்யத் தயாராக உள்ளது',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'புதிய உள்ளடக்கம் கிடைக்கிறது, புதுப்பிக்க ரீலோட் பொத்தானைக் கிளிக் செய்யவும்',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ரீலோட்',
-    'pwa.close': 'Close',
+    'pwa.close': 'மூடு',
     'language.label': 'மொழி தேர்வு',
     'theme.label': 'தீம்',
     'theme.system': 'அமைப்பு',
@@ -3738,10 +3802,10 @@ const messages = {
     'pwa.installTitle': 'యాప్‌ను ఇన్‌స్టాల్ చేయండి మరియు ఆఫ్‌లైన్‌లో ఆడండి',
     'pwa.installMobile': 'హోమ్ స్క్రీన్‌కు జోడించు',
     'pwa.installDesktop': 'డెస్క్‌టాప్‌లో ఇన్‌స్టాల్ చేయండి',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'యాప్ ఆఫ్‌లైన్‌లో పని చేయడానికి సిద్ధంగా ఉంది',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'కొత్త కంటెంట్ అందుబాటులో ఉంది, అప్‌డేట్ చేయడానికి రీలోడ్ బటన్‌పై క్లిక్ చేయండి',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'రీలోడ్',
-    'pwa.close': 'Close',
+    'pwa.close': 'మూసివేయి',
     'language.label': 'భాష ఎంపిక',
     'theme.label': 'థీమ్',
     'theme.system': 'సిస్టమ్',
@@ -3793,10 +3857,10 @@ const messages = {
     'pwa.installTitle': 'एप इन्स्टल गर्नुहोस् र अफलाइन खेल्नुहोस्',
     'pwa.installMobile': 'होम स्क्रिनमा थप्नुहोस्',
     'pwa.installDesktop': 'डेस्कटपमा इन्स्टल गर्नुहोस्',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'एप अफलाइन काम गर्न तयार छ',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'नयाँ सामग्री उपलब्ध छ, अपडेट गर्न रिलोड बटनमा क्लिक गर्नुहोस्',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'रिलोड',
-    'pwa.close': 'Close',
+    'pwa.close': 'बन्द गर्नुहोस्',
     'language.label': 'भाषा चयन',
     'theme.label': 'थिम',
     'theme.system': 'सिस्टम',
@@ -3848,10 +3912,10 @@ const messages = {
     'pwa.installTitle': 'အက်ပ်ထည့်သွင်းပြီး အော့ဖ်လိုင်းကစားပါ',
     'pwa.installMobile': 'ပင်မစာမျက်နှာသို့ထည့်ပါ',
     'pwa.installDesktop': 'ကွန်ပျူတာတွင်ထည့်ပါ',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'အက်ပ်သည် အော့ဖ်လိုင်းအလုပ်လုပ်ရန် အဆင်သင့်ဖြစ်နေပါပြီ',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'အကြောင်းအရာအသစ် ရရှိနိုင်ပါသည်၊ အပ်ဒိတ်လုပ်ရန် ပြန်လည်စတင်ရန် ခလုတ်ကို နှိပ်ပါ',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ပြန်လည်စတင်သည်',
-    'pwa.close': 'Close',
+    'pwa.close': 'ပိတ်သည်',
     'language.label': 'ဘာသာစကား',
     'theme.label': 'အပြင်အဆင်',
     'theme.system': 'စနစ်',
@@ -3903,10 +3967,10 @@ const messages = {
     'pwa.installTitle': 'ដំឡើងកម្មវិធី ហើយលេងក្រៅបណ្តាញ',
     'pwa.installMobile': 'បន្ថែមទៅអេក្រង់ដើម',
     'pwa.installDesktop': 'ដំឡើងលើកុំព្យូទ័រ',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'កម្មវិធីរួចរាល់សម្រាប់ការងារក្រៅបណ្តាញ',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'មានមាតិកាថ្មី សូមចុចប៊ូតុងផ្ទុកឡើងវិញដើម្បីធ្វើបច្ចុប្បន្នភាព',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ផ្ទុកឡើងវិញ',
-    'pwa.close': 'Close',
+    'pwa.close': 'បិទ',
     'language.label': 'ជ្រើសរើសភាសា',
     'theme.label': 'ស្បែក',
     'theme.system': 'ប្រព័ន្ធ',
@@ -3958,10 +4022,10 @@ const messages = {
     'pwa.installTitle': 'ຕິດຕັ້ງແອັບ ແລະຫຼິ້ນແບບອອບໄລນ໌',
     'pwa.installMobile': 'ເພີ່ມໃສ່ໜ້າຈໍຫຼັກ',
     'pwa.installDesktop': 'ຕິດຕັ້ງໃສ່ເດັສທັອບ',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'ແອັບພ້ອມທີ່ຈະເຮັດວຽກແບບອອບໄລນ໌',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'ມີເນື້ອຫາໃໝ່, ຄລິກປຸ່ມໂຫຼດຄືນໃໝ່ເພື່ອອັບເດດ',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ໂຫຼດຄືນໃໝ່',
-    'pwa.close': 'Close',
+    'pwa.close': 'ປິດ',
     'language.label': 'ເລືອກພາສາ',
     'theme.label': 'ທີມ',
     'theme.system': 'ລະບົບ',
@@ -4013,10 +4077,10 @@ const messages = {
     'pwa.installTitle': 'Апп суулгаж, офлайн тоглох',
     'pwa.installMobile': 'Нүүр дэлгэцэнд нэмэх',
     'pwa.installDesktop': 'Десктопт суулгах',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Апп офлайн ажиллахад бэлэн байна',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Шинэ контент бэлэн байна, шинэчлэхийн тулд дахин ачаалах товчийг дарна уу',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Дахин ачаалах',
-    'pwa.close': 'Close',
+    'pwa.close': 'Хаах',
     'language.label': 'Хэл сонгох',
     'theme.label': 'Загвар',
     'theme.system': 'Систем',
@@ -4233,10 +4297,10 @@ const messages = {
     'pwa.installTitle': 'መተግበሪያውን ይጫኑ እና ከመስመር ውጭ ይጫወቱ',
     'pwa.installMobile': 'ወደ መነሻ ገጽ አክል',
     'pwa.installDesktop': 'በኮምፒውተር ላይ ጫን',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'መተግበሪያው ከመስመር ውጭ ለመስራት ዝግጁ ነው',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'አዲስ ይዘት አለ፣ ለማዘመን ድጋሚ ጫን የሚለውን ይጫኑ',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ድጋሚ ጫን',
-    'pwa.close': 'Close',
+    'pwa.close': 'ዝጋ',
     'language.label': 'ቋንቋ ይምረጡ',
     'theme.label': 'ገጽታ',
     'theme.system': 'ስርዓት',
@@ -4398,10 +4462,10 @@ const messages = {
     'pwa.installTitle': 'Ku shub abka oo ciyaar offline',
     'pwa.installMobile': 'Ku dar shaashadda guriga',
     'pwa.installDesktop': 'Ku shub kombiyuutarka',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Abka wuxuu diyaar u yahay inuu shaqeeyo offline',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Waxyaabo cusub ayaa la heli karaa, guji badhanka reload si aad u cusbooneysiiso',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Dib u sooeli',
-    'pwa.close': 'Close',
+    'pwa.close': 'Xir',
     'language.label': 'Dooro Luqad',
     'theme.label': 'Mawduuc',
     'theme.system': 'Nidaamka',
@@ -4453,10 +4517,10 @@ const messages = {
     'pwa.installTitle': 'Shyira porogaramu ukine udafite interineti',
     'pwa.installMobile': 'Ongeraho kuri ecran y\'ibanze',
     'pwa.installDesktop': 'Shyira kuri mudasobwa',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Porogaramu yiteguye gukora idafite interineti',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Ibirimo bishya birahari, kanda kuri reload kugirango uvugurure',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Ongera utangire',
-    'pwa.close': 'Close',
+    'pwa.close': 'Funga',
     'language.label': 'Hitamo Ururimi',
     'theme.label': 'Insanganyamatsiko',
     'theme.system': 'Sisteme',
@@ -4508,10 +4572,10 @@ const messages = {
     'pwa.installTitle': 'Shira porogaramu ukine udafite interineti',
     'pwa.installMobile': 'Ongerako kuri ecran nkuru',
     'pwa.installDesktop': 'Shirako kuri mudasobwa',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Porogaramu yiteguye gukora idafite interineti',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Ibirimo bishya birahari, kanda kuri reload kugirango uvugurure',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Subiramwo',
-    'pwa.close': 'Close',
+    'pwa.close': 'Ugara',
     'language.label': 'Hitamo Ururimi',
     'theme.label': 'Insanganyamatsiko',
     'theme.system': 'Sisitemu',
@@ -4563,10 +4627,10 @@ const messages = {
     'pwa.installTitle': 'Sampal aplikasioŋ bi te po offline',
     'pwa.installMobile': 'Yokk ci ekranu kër',
     'pwa.installDesktop': 'Sampal ci ordinatër',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Application bi pare na ngir liggéey offline',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Am na content bu bees, bës reload ngir yeesal',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Dugal aat',
-    'pwa.close': 'Close',
+    'pwa.close': 'Tëj',
     'language.label': 'Tann Làkk',
     'theme.label': 'Theme',
     'theme.system': 'System',
@@ -4618,10 +4682,10 @@ const messages = {
     'pwa.installTitle': 'Appii fe\'iitii offline taphadhu',
     'pwa.installMobile': 'Iskirinii manaa irratti dabali',
     'pwa.installDesktop': 'Kompyuutara irratti fe\'i',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Appichi offline hojjechuuf qophiidha',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Qabiyyee haaraan ni jira, update gochuuf reload tuqi',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Deebisii fe\'i',
-    'pwa.close': 'Close',
+    'pwa.close': 'Cufi',
     'language.label': 'Afaan Filadhu',
     'theme.label': 'Bifa',
     'theme.system': 'Sistimii',
@@ -4673,10 +4737,10 @@ const messages = {
     'pwa.installTitle': 'ኣፕ ጽዓን እሞ ብዘይ ኢንተርኔት ተጫወት',
     'pwa.installMobile': 'ናብ ሆም ስክሪን ወስኽ',
     'pwa.installDesktop': 'ኣብ ኮምፒተር ጽዓን',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'ኣፕ ብዘይ ኢንተርኔት ንምስራሕ ድሉው እዩ',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'ሓድሽ ትሕዝቶ ኣሎ፡ ንምሕዳስ reload ጠውቕ',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'ደጊምካ ጽዓን',
-    'pwa.close': 'Close',
+    'pwa.close': 'ዕጸው',
     'language.label': 'ቋንቋ ምረጽ',
     'theme.label': 'ቴማ',
     'theme.system': 'ሲስተም',
@@ -4838,10 +4902,10 @@ const messages = {
     'pwa.installTitle': 'I-install ti app ken agay-ayam offline',
     'pwa.installMobile': 'Inayon iti home screen',
     'pwa.installDesktop': 'I-install iti desktop',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Nakasagana ti app nga agtrabaho offline',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Adda baro a linaon, i-klik ti reload button tapno ma-update',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'I-reload',
-    'pwa.close': 'Close',
+    'pwa.close': 'Ikkata',
     'language.label': 'Piliem ti Pagsasao',
     'theme.label': 'Tema',
     'theme.system': 'Sistema',
@@ -4948,10 +5012,10 @@ const messages = {
     'pwa.installTitle': 'Serlêdanê saz bike û offline bilîze',
     'pwa.installMobile': 'Li ekrana malê zêde bike',
     'pwa.installDesktop': 'Li ser sermaseyê saz bike',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'Bername ji bo xebata offline amade ye',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'Naveroka nû heye, ji bo nûvekirinê pêl bişkoja reload bike',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'Dîsa bar bike',
-    'pwa.close': 'Close',
+    'pwa.close': 'Bigire',
     'language.label': 'Ziman Hilbijêre',
     'theme.label': 'Mijar',
     'theme.system': 'Pergal',
@@ -5003,10 +5067,10 @@ const messages = {
     'pwa.installTitle': 'ئەپەکە دابەزێنە و بەبێ ئینتەرنێت یاری بکە',
     'pwa.installMobile': 'زیادکردن بۆ شاشەی سەرەکی',
     'pwa.installDesktop': 'دابەزاندن بۆ سەر کۆمپیوتەر',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'ئەپەکە ئامادەیە بۆ کارکردن بەبێ ئینتەرنێت',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'ناوەرۆکی نوێ بەردەستە، کلیک لە دوگمەی نوێکردنەوە بکە بۆ نوێکردنەوە',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'نوێکردنەوە',
-    'pwa.close': 'Close',
+    'pwa.close': 'داخستن',
     'language.label': 'هەڵبژاردنی زمان',
     'theme.label': 'بابەت',
     'theme.system': 'سیستەم',
@@ -5058,10 +5122,10 @@ const messages = {
     'pwa.installTitle': 'اپلیکیشن نصب کړئ او آفلاین لوبه وکړئ',
     'pwa.installMobile': 'کور سکرین ته اضافه کړئ',
     'pwa.installDesktop': 'په ډیسکټاپ کې نصب کړئ',
-    'pwa.offlineReady': 'App ready to work offline',
+    'pwa.offlineReady': 'ایپ آفلاین کار کولو ته چمتو دی',
-    'pwa.newContent': 'New content available, click on reload button to update',
+    'pwa.newContent': 'نوي مینځپانګې شتون لري ، د تازه کولو لپاره د ریلوډ تڼۍ باندې کلیک وکړئ',
-    'pwa.reload': 'Reload',
+    'pwa.reload': 'بیا پورته کول',
-    'pwa.close': 'Close',
+    'pwa.close': 'بندول',
     'language.label': 'ژبه غوره کړئ',
     'theme.label': 'تیم',
     'theme.system': 'سیستم',

src/composables/useSolver.js

@@ -78,6 +78,9 @@ export function useSolver() {
             } else if (type === 'done') {
                 isProcessing.value = false;
                 pause();
+            } else if (type === 'stuck') {
+                isProcessing.value = false;
+                pause();
             } else {
                 isProcessing.value = false;
             }

src/stores/puzzle.js

@@ -64,6 +64,9 @@ export const usePuzzleStore = defineStore('puzzle', () => {
   const playerGrid = ref([]); // 0: empty, 1: filled, 2: cross
   const isGameWon = ref(false);
   const hasUsedGuide = ref(false);
+  const guideUsageCount = ref(0);
+  const currentDifficulty = ref(null); // 'easy', 'medium', 'hard', 'custom' or object { density: 0.5 }
+  const currentDensity = ref(0);
   const size = ref(5);
   const startTime = ref(null);
   const elapsedTime = ref(0);
@@ -118,23 +121,29 @@ export const usePuzzleStore = defineStore('puzzle', () => {
     resetGrid();
     isGameWon.value = false;
     hasUsedGuide.value = false;
+    guideUsageCount.value = 0;
+    currentDensity.value = totalCellsToFill.value / (size.value * size.value);
     elapsedTime.value = 0;
     startTimer();
+    saveState();
   }
 
-  function initCustomGame(customSize) {
+  function initCustomGame(customSize, density = 0.5) {
     stopTimer();
     currentLevelId.value = 'custom';
     size.value = customSize;
     
     // Generate random grid
-    solution.value = generateRandomGrid(customSize);
+    solution.value = generateRandomGrid(customSize, density);
     
     resetGrid();
     isGameWon.value = false;
     hasUsedGuide.value = false;
+    guideUsageCount.value = 0;
+    currentDensity.value = density;
     elapsedTime.value = 0;
     startTimer();
+    saveState();
   }
 
   function resetGrid() {
@@ -242,6 +251,8 @@ export const usePuzzleStore = defineStore('puzzle', () => {
         playerGrid: playerGrid.value,
         isGameWon: isGameWon.value,
         hasUsedGuide: hasUsedGuide.value,
+        guideUsageCount: guideUsageCount.value,
+        currentDensity: currentDensity.value,
         elapsedTime: elapsedTime.value,
         moves: moves.value,
         history: history.value
@@ -259,6 +270,9 @@ export const usePuzzleStore = defineStore('puzzle', () => {
             solution.value = parsed.solution;
             playerGrid.value = parsed.playerGrid;
             isGameWon.value = parsed.isGameWon;
+            hasUsedGuide.value = parsed.hasUsedGuide || false;
+            guideUsageCount.value = parsed.guideUsageCount || 0;
+            currentDensity.value = parsed.currentDensity || 0;
             elapsedTime.value = parsed.elapsedTime || 0;
             moves.value = parsed.moves || 0;
             history.value = parsed.history || [];
@@ -275,44 +289,9 @@ export const usePuzzleStore = defineStore('puzzle', () => {
     return false;
   }
   
-  function initGame(levelId = 'easy') {
+  // Duplicate initGame removed
-    // If init called without args and we have save, load it?
-    // User might want to start fresh if clicking buttons.
-    // Let's add explicit 'continue' logic or just auto-load on first run.
-    // For now, let's just stick to explicit init, but maybe load on mount if exists?
-    // The user didn't explicitly ask for "Continue", but "features from HTML".
-    // HTML usually auto-saves and loads.
-    
-    stopTimer();
-    currentLevelId.value = levelId;
-    
-    let puzzle = PUZZLES[levelId];
-    if (!puzzle) {
-        puzzle = PUZZLES['easy'];
-    }
-
-    size.value = puzzle.size;
-    solution.value = puzzle.grid;
-    
-    resetGrid();
-    isGameWon.value = false;
-    elapsedTime.value = 0;
-    startTimer();
-    saveState();
-  }
   
-  // Modify initCustomGame similarly
+  // Duplicate initCustomGame removed
-  function initCustomGame(customSize) {
-    stopTimer();
-    currentLevelId.value = 'custom';
-    size.value = customSize;
-    solution.value = generateRandomGrid(customSize);
-    resetGrid();
-    isGameWon.value = false;
-    elapsedTime.value = 0;
-    startTimer();
-    saveState();
-  }
 
   // Duplicate toggleCell/setCell removed
 
@@ -321,6 +300,7 @@ export const usePuzzleStore = defineStore('puzzle', () => {
         resetGrid();
         isGameWon.value = false;
         hasUsedGuide.value = false;
+        guideUsageCount.value = 0;
         elapsedTime.value = 0;
         startTimer();
         saveState();
@@ -332,6 +312,7 @@ export const usePuzzleStore = defineStore('puzzle', () => {
   function markGuideUsed() {
     if (isGameWon.value) return;
     hasUsedGuide.value = true;
+    guideUsageCount.value++;
     saveState();
   }
 
@@ -360,6 +341,8 @@ export const usePuzzleStore = defineStore('puzzle', () => {
     undo,
     closeWinModal,
     hasUsedGuide,
+    guideUsageCount,
+    currentDensity,
     markGuideUsed
   };
 

src/utils/puzzleUtils.js

@@ -40,15 +40,36 @@ export function calculateHints(grid) {
     return { rowHints, colHints };
 }
 
-export function generateRandomGrid(size) {
+export function generateRandomGrid(size, density = 0.5) {
     const grid = [];
     for (let i = 0; i < size; i++) {
         const row = [];
         for (let j = 0; j < size; j++) {
-            // ~25% empty cells
+            row.push(Math.random() < density ? 1 : 0);
-            row.push(Math.random() > 0.25 ? 1 : 0);
         }
         grid.push(row);
     }
     return grid;
 }
+
+export function calculateDifficulty(density) {
+    // Shannon Entropy: H(x) = -x*log2(x) - (1-x)*log2(1-x)
+    // Normalized to 0-1 range (since max entropy at 0.5 is 1)
+    
+    // Avoid log(0)
+    if (density <= 0 || density >= 1) return 'easy';
+    
+    const entropy = -density * Math.log2(density) - (1 - density) * Math.log2(1 - density);
+    
+    // Thresholds based on entropy
+    // 0.5 density -> entropy 1.0 (Extreme)
+    // 0.4/0.6 density -> entropy ~0.97 (Extreme)
+    // 0.3/0.7 density -> entropy ~0.88 (Hardest)
+    // 0.2/0.8 density -> entropy ~0.72 (Harder)
+    // <0.2/>0.8 density -> entropy <0.72 (Easy)
+
+    if (entropy >= 0.96) return 'extreme'; // approx 38% - 62%
+    if (entropy >= 0.85) return 'hardest'; // approx 28% - 38% & 62% - 72%
+    if (entropy >= 0.65) return 'harder';  // approx 17% - 28% & 72% - 83%
+    return 'easy';
+}

src/workers/solverWorker.js

@@ -5,7 +5,7 @@ const messages = {
     'worker.solved': 'Rozwiązane!',
     'worker.logicRow': 'Logika: Wiersz {row}, Kolumna {col} -> {state}',
     'worker.logicCol': 'Logika: Kolumna {col}, Wiersz {row} -> {state}',
-    'worker.guess': 'Zgadywanie: Wiersz {row}, Kolumna {col}',
+    'worker.stuck': 'Brak logicznego ruchu. Spróbuj zgadnąć lub cofnąć.',
     'worker.done': 'Koniec!',
     'worker.state.filled': 'Pełne',
     'worker.state.empty': 'Puste'
@@ -14,7 +14,7 @@ const messages = {
     'worker.solved': 'Solved!',
     'worker.logicRow': 'Logic: Row {row}, Column {col} -> {state}',
     'worker.logicCol': 'Logic: Column {col}, Row {row} -> {state}',
-    'worker.guess': 'Guessing: Row {row}, Column {col}',
+    'worker.stuck': 'No logical move found. Try guessing or undoing.',
     'worker.done': 'Done!',
     'worker.state.filled': 'Filled',
     'worker.state.empty': 'Empty'
@@ -236,29 +236,9 @@ const handleStep = (playerGrid, solution, locale) => {
     }
   }
 
-  for (let r = 0; r < size; r++) {
+  // Check for guess logic - we want to avoid this unless strictly necessary
-    for (let c = 0; c < size; c++) {
+  // If no logic move found, return 'stuck' instead of cheating
-      const current = playerGrid[r][c];
+  return { type: 'stuck', statusText: t(locale, 'worker.stuck') };
-      const target = solution[r][c];
-      let isCorrect = false;
-      if (target === 1 && current === 1) isCorrect = true;
-      if (target === 0 && current === 2) isCorrect = true;
-      if (target === 0 && current === 0) isCorrect = false;
-      if (target === 1 && current === 0) isCorrect = false;
-      if (!isCorrect) {
-        const newState = target === 1 ? 1 : 2;
-        return {
-          type: 'move',
-          r,
-          c,
-          state: newState,
-          statusText: t(locale, 'worker.guess', { row: r + 1, col: c + 1 })
-        };
-      }
-    }
-  }
-
-  return { type: 'done', statusText: t(locale, 'worker.done') };
 };
 
 self.onmessage = (event) => {