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Resize the window
to rescale the grid. Play instructions at bottom-right.
Across:
Down:
©Copyright
dofutoshiki.com
/ Gareth Moore 2005-2015
Get more puzzles to play here!
Sample puzzle
Place numbers:
(press spacebar)
solution
pencilmarks
Solving aids
Show repeated digits
Show broken inequalities
Auto-add pencilmarks:
Redundant pencilmarks:
Auto-remove
Solution assistants
Show wrong moves
How to play
-Click squares and use arrow keys to move
-Press a number key to place/clear a digit
-Space toggles pencil/solution marks
-Double-click on solo pencilmark to place
-Press 0 or delete/backspace to clear a cell
-Press 'Check solution' when finished