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src-ui/res/rules.en.yaml
@@ -510,3 +510,8 @@ syncskating: |-
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3. Chains cannot intersect themselves, but they can intersect each other outside of nodes. Line segments cannot overlap.
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4. Each chain visits each number from 1 to N in ascending order. Empty nodes can be replaced with any number.
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5. Lines of two chains connecting the same number must be parallel.
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+trizone: |-
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+ Shade some cells on the board, and divide the rest into regions of 3 cells.
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+ 1. No two shaded cells are horizontally or vertically adjacent.
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+ 2. Numbers must be contained in a region of 3 cells. Every region has exactly one number.
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+ 3. Numbers indicate how many shaded cells are horizontally or vertically adjacent to its region.
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