Success in Barns requires that every cell, edge, region, and fixed clue satisfies the ice crossing single loop completion test. The game declares completion only after all interacting restrictions agree at the same time.
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Success in Barns requires that every cell, edge, region, and fixed clue satisfies the ice crossing single loop completion test. The game declares completion only after all interacting restrictions agree at the same time.
Complete guide
Barns uses the independently implemented Barns ice crossing single loop rules v1 profile (R647). The defining decisions in Barns come from this rules combination: Draw one loop that travels straight through every ice cell and may cross itself only at an ice cell.
The Barns opening separates permanent constraints from player-controlled positions. Draw one loop that travels straight through every ice cell and may cross itself only at an ice cell. Its versioned seed recreates those same constraints locally while keeping unrevealed decisions out of the guide and board labels.
Barns treats the printed or dealt restrictions as hard constraints, not suggestions. Draw one loop that travels straight through every ice cell and may cross itself only at an ice cell. A move that contradicts the current state has no effect, including after the game has ended.
Success in Barns requires that every cell, edge, region, and fixed clue satisfies the ice crossing single loop completion test. The game declares completion only after all interacting restrictions agree at the same time. Close Barns by auditing the boundary cases first and the obvious placements second. The position is not done until every cell, edge, region, and fixed clue satisfies the ice crossing single loop completion test.
At each ice cell, pair incoming and outgoing directions as straight strands; reserve the crossing option only when both strands can remain part of one loop. Turning on ice or treating a crossing as a branch creates the wrong degree: the two straight strands may cross visually without becoming four connected exits.
At each ice cell, pair incoming and outgoing directions as straight strands; reserve the crossing option only when both strands can remain part of one loop. This matters specifically because draw one loop that travels straight through every ice cell and may cross itself only at an ice cell.
Turning on ice or treating a crossing as a branch creates the wrong degree: the two straight strands may cross visually without becoming four connected exits. Recheck the legal boundary before choosing a replacement move.
Finish Barns when every cell, edge, region, and fixed clue satisfies the ice crossing single loop completion test. Completion is checked from the entire position, not from a displayed answer or a visual approximation. Undo and redo expose alternative branches without revealing an authored answer.