Play Norinori Online — Free
Shade exactly two cells in each region. Every shaded cell must share an edge with exactly one other shaded cell, forming dominoes across the grid.
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About Norinori
Norinori is a Nikoli puzzle with a deceptively simple rule: shade exactly two cells in every region, and those two cells must be orthogonally adjacent (forming a domino). Additionally, every shaded cell must have exactly one shaded neighbor — meaning the shaded dominoes partition into pairs that each cross a region boundary.
This “every shaded cell pairs with exactly one neighbor” constraint is what gives Norinori its character. You’re not just filling regions; you’re building a global pairing structure where every shaded cell belongs to one and only one cross-boundary domino.
Norinori is compact and fast to play — grid sizes are typically small — but the domino-pairing logic creates surprisingly deep puzzles for their size. It’s a great choice when you want a challenging puzzle that doesn’t require a large time commitment.
Regions with only one or two possible domino placements are the strongest starting points. Once you place a domino, check which cell it must pair with across the boundary, and propagate the constraint into the adjacent region.
Frequently asked questions
What is Norinori?
Norinori is a logic puzzle where you shade exactly 2 cells per region. Every shaded cell must be adjacent to exactly one other shaded cell, forming domino pairs that may cross region boundaries.