Mandoku - Samurai Sudoku

Five 9x9 grids overlap into a single 21x21 board. A digit in a shared cell lands in both grids at once. Mandoku is a four-board sudoku built around Samurai. ◆ Samurai — 21x21 Five 9x9 grids sit on a 21-by-21 board, each corner grid sharing one 3x3 box with the grid in the middle. Write a digit into a shared cell and it appears in both grids, so solving one grid is already solving its neighbour. We built a dedicated interface so it actually works on a phone. The overview shows all five grids at once; tap one and that 9x9 opens up large. Shared cells are colour-marked, and a minimap along the bottom moves you between grids in one tap. 40 easy, 35 medium, 25 hard — 100 puzzles in all. Every one has exactly one solution and is solvable by logic alone, never by guessing. ◆ Four Boards · 4x4 Mini — 500 puzzles. A board you finish in a minute. · 6x6 Mini — 500 puzzles. Boxes are 2 rows by 3 columns; one step wider. · 9x9 Classic — 10,003 puzzles across 11 levels, from Beginner to 万. · Samurai — 100 puzzles on 21x21. Each board opens in order from No. 1. Clear a puzzle and the next one unlocks; progress is tracked per board. ◆ Manpando — a 10,000-cell record The Manpando board on the home screen draws all 10,000 classic 9x9 puzzles as 10,000 cells. Solve one and a cell fills in, with the 11 levels stacking into bands of colour — your own record of how far you have come. ◆ It does not end when you finish Generate more 9x9 classic puzzles yourself, at any difficulty, and keep going. Generating and saving are free; playing what you generate is part of Premium. ◆ A light screen Ivory ground, amber accents, ink-brown type — a light tone by default, easy on the eyes for long sessions. Prefer the dark? Switch to dark mode in Settings. ◆ Our ad policy, stated plainly · Your first three puzzles have no ads at all. · From the fourth puzzle on, one interstitial appears every two puzzles, with a minimum 90-second gap. · There are no banner ads. · Premium removes ads completely. [Good to know] · 4x4, 6x6 and 9x9 are free, supported by ads. · Premium is a one-time purchase (not a subscription): it removes ads and unlocks the 100 Samurai puzzles and unlimited generated play. · Puzzles ship inside the app, so you can solve offline (ads need a connection). · No account, no sign-up. Install and start. Contact: [email protected]