Step 1 How do you want to play?
Choose what fills the grid. It's the same puzzle underneath, switch whenever you like, your progress stays put.
Step 2 Pick your grid
Six hand-tuned layouts, two of each difficulty. Every grid has exactly one solution.
Step 3 Solve it
Easy
00:00
Quick reads
Tip: click a cell then use the pad, or use arrow keys to move and 1–9 (or A–I) to fill.
Built keyboard-first and screen-reader friendly, because accessible should be the default, not the afterthought.