Split into Rectangles

🧩 The Japanese puzzle Shikaku: numbers sit on a grid and the whole field must be cut into rectangles. 🎯 Each rectangle holds exactly one number, equal to the count of its cells. ✅ There is always a single solution — nothing is guessed, everything follows strictly. 💡 Start with the primes: a seven or a five fits only one way and carves off a strip at once. 📐 The rest unfolds from there, step by step, until the grid is done. 🏁 Levels run from a six by six field to large grids that take several minutes. ↩️ Made a mistake? Undo and try another cut — there is no penalty. 🎨 Several themes to choose from, from plain to bright. ☁️ Progress saves to the cloud and a daily goal waits for tomorrow. ❓ Can you finish a large grid without a single hint? 🔥