2, 3, 5, 7 can only form 1×N rectangles. Place them first — their shape is forced.
A "6" can be 1×6, 2×3, 3×2, or 6×1. Learn which shapes fit where.
Start with smaller grids to build pattern recognition before tackling larger puzzles.
If placing a rectangle blocks another number, it's wrong. Think one step ahead.
Stuck? Enter your puzzle and get the unique solution instantly.
Each rectangle's area must equal its number. No more, no fewer.
A cell numbered "2" on a Shikaku grid is the strongest clue — it can only be a 1×2 or 2×1 rectangle, no thinking required. Start every puzzle by scanning for primes first. Then check if those rectangles reveal new forced placements for neighboring numbers. This "cascade from primes" technique works on every difficulty level and is the single fastest way to speed up your solving.
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4×4 grids with guided hints. Learn rectangle placement, area rules, and elimination basics.
5×5 grids with simple shapes. Practice prime numbers and corner strategies at your own pace.
5×6 grids with complex shapes. Master prime numbers, corner strategies, and multi-step deduction.
6×6 grids. Combine multiple techniques and plan several moves ahead.
7×8 grids requiring deep reasoning. Chain eliminations, overlap detection, and forced placements.
10×10 puzzle seeded by date. Same puzzle worldwide — compare your time with friends.
Play MeowBlock anywhere, anytime. Add to your home screen for offline support, no browser bars, and instant launch.
MeowBlock is a free Shikaku puzzle game with adorable cat visuals. Draw rectangles on a numbered grid so each rectangle covers exactly the number of cells shown. It's the classic Shikaku (rectangle partition) puzzle by Nikoli — the same company behind Sudoku — reimagined with cats.
Whether you're new to Shikaku or a seasoned solver, MeowBlock offers unlimited procedurally generated puzzles across 7 difficulty levels, from Tutorial 4×4 to Legend 8×8. Every puzzle has a unique solution reachable by pure logic — no guessing required.
The rules of Shikaku are simple:
That's it — no math beyond multiplication. The challenge is figuring out which shapes fit where when multiple numbers compete for space.
Rushing to fill cells is the fastest way to get stuck. Instead, work systematically:
Visit our Tips & Strategy page for detailed guides on each technique.
Unlike many puzzle sites, MeowBlock has no ads interrupting gameplay, no paywalls, and no registration. Every puzzle is free, every solution is unique, and every solve ends with a cute cat celebration. The Daily Challenge gives you a reason to come back every day with a fresh 6×6 puzzle and streak tracking.
If you enjoy Sudoku, KenKen, or other logic puzzles, Shikaku offers a refreshing change with spatial reasoning instead of arithmetic. The rectangle partition mechanic is easy to learn but rewards deep thinking — perfect for a coffee break or a long session.
Forgetting area constraints: a rectangle around a "4" must cover exactly 4 cells — no more, no fewer. Overlapping rectangles: each cell belongs to exactly one rectangle. Ignoring forced placements: if a number can only fit one rectangle shape, place it first.
