How this drafting table works
Fill every row, column and 3×3 box with 1–9 exactly once. Use pencil notes to test possibilities, then commit only when the logic is sound.
청사진 스도쿠
유일한 해답을 그리세요. 모든 표시에 이유가 있어야 합니다.
청사진 스도쿠유일한 해답을 그리세요. 모든 표시에 이유가 있어야 합니다.
시간00:00실수0집중 연쇄×0
Tip: press and hold a number to add a pencil note.
Keyboard and touch
Arrow keys move; 1–9 write; N changes pencil mode; Z/Y undo and redo; H opens a reasoning hint; P or Escape pauses. On touch, hold a number to make a one-off note.
A puzzle generated here
Every board is produced locally from a seed, verified to have one solution, and rated with logical-solving data. No branded puzzle set, artwork, melody or commercial scoring system is used.