Learn Sudoku
technique map
sudoku isn't guessing. it's reading.
stuck? the hint shows where to look first.
Coming soon
iOS · free, Pro subscription or lifetime
technique box
Each chapter you finish puts a number in a 3x3 box.
one technique a chapter
Eight chapters from the rules to triples, each with a 30-second card.
four-step hints
Where to look, which technique, why, then the result. You place the digit.
daily puzzle
One easy puzzle every day keeps your streak going.
comfortable
Big number keys, no lives, rewind to your first mistake.
no ads
No ads, no account. Works offline.