Sudoku: Classic Thermo Killer

Grow your Sudoku skills one puzzle at a time. SudoBloom is a calm, beautifully designed Sudoku game with classic puzzles, fun variants, daily challenges and step-by-step lessons. 🌱 PUZZLES FOR EVERY LEVEL Five difficulty levels, from Easy to Master. Start gently with plenty of clues, then work your way up to puzzles that test real technique. 🧩 SIX WAYS TO PLAY • Classic Sudoku – the 9×9 original • Killer Sudoku – add up the numbers in each cage • Thermo Sudoku – digits rise along every thermometer • Arrow Sudoku – digits on the arrow sum to the circle • Jigsaw Sudoku – irregular regions instead of 3×3 boxes • Sandwich Sudoku – sums between the 1 and the 9 📅 DAILY CHALLENGES & STREAKS A fresh puzzle every day. Keep your streak alive, fill your calendar and watch your progress bloom. 📚 LEARN AS YOU PLAY Short, interactive lessons teach you the rules and real solving techniques – pencil marks, naked singles, hidden pairs and more – for classic Sudoku and every variant. 🏆 LEADERBOARDS & XP Earn XP for every solve and climb the weekly and all-time leaderboards. ✏️ HELPFUL TOOLS Notes (pencil marks), undo, erase and hints when you're stuck. Your progress is saved automatically. SudoBloom is free to play and supported by ads.