description Yajilin Overview
Yajilin is a logic puzzle published by Nikoli where solvers draw a single continuous, closed loop through a grid. Numbered cells with arrows act as clues, indicating the exact count of black cells located in the specified direction along that row or column. All remaining cells that are not part of the loop and not numbered must be shaded black, and no two black cells can share an edge. The loop must travel horizontally or vertically through all white cells without crossing or branching.
insights Ranking position
Yajilin ranks #18 of 93 in the Logic Puzzle ranking, behind Loopy, ahead of Tower of Hanoi.
help Yajilin FAQ
What are the rules of Yajilin?
Yajilin is a logic puzzle where solvers must draw a single, continuous closed loop through a grid. Numbered cells with arrows act as clues, indicating the exact number of black cells located in the specified direction along that row or column.
Can the loop cross itself in Yajilin?
No, just like in Slitherlink, the loop in Yajilin cannot cross itself or branch off. The loop must form one continuous, unbroken path that connects cells orthogonally.
Do you shade the numbered clue cells in Yajilin?
No, the cells containing numbered clues and arrows are never shaded black, nor can the loop pass through them. They simply serve as stationary hints for the player to locate the black cells.
What happens to cells that are not black or clues in Yajilin?
Every cell that is not black and does not contain a clue must be passed through by the continuous loop. This means the remaining white cells must form a single connected pathway without any isolated gaps.
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