Hitori (Alone)

Hitori is a free online solo game that originated in Japan and all logic is done locally in your browser.

Play Instructions

• unreplicatedIn white boxes in each row and column, numbers cannot be repeated
• non-adjacentBlackened squares cannot be adjacent to each other.
• connectivity: All white squares that are not blackened must form a connected area
• click operation: Click the grid to switch between the three states of "white → black → confirm white"
• real-time feedback: repeated numbers are marked in red, adjacent black marks are marked in red border