An 81-card premium deck — nine suits of nine digits. Deal a grid, hold a hand, and place your numbers where they belong. The world's calmest puzzle, finally played with your hands.
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Deal 9×9 face down, reveal the givens, and solve by swapping cards into place. One wrong placement locks a row — plan ahead.
Same grid, two hands. Fastest correct placement takes the cell. First to control three boxes wins the deal.
Rummy-doku, killer teams, blind draws — the booklet ships with eleven variants and room to invent your own.