by NicoDยทPublished 05/17/2026, 02:43:01 AM
Sudoku
Each row, column, and region must contain the digits 1-9 once each.
German Whisper Lines
Adjacent cells along a German Whisper Line must differ by at least 5.
Renban Lines
Cells along a Renban Line form a set of consecutive digits in any order, without repeats.
Parity Lines
Every set of 2 consecutive cells along a Parity Line must contain one even digit (2,4,6,8) and one odd digit (1,3,5,7,9).
Nabner Lines
No two digits along a Nabner Line may be repeats or consecutive, regardless of their positions along the line.
Dutch Whisper Lines
Adjacent cells along a Dutch Whisper Line must differ by at least 4.
Entropy Lines
Every set of 3 consecutive cells along an Entropy Line must contain a low digit (1,2,3), a medium digit (4,5,6), and a high digit (7,8,9).
Region Sum Lines
Segments in each region along a Region Sum Line must sum to the same total. Separate visits to the same region are counted as separate segments.
Modular Lines
Every set of 3 consecutive cells along a Modular Line must contain a digit from each residual class mod 3. I.e., one from (1,4,7), one from (2,5,8), and one from (3,6,9).
Anti-Knight
Cells separated by a knight's move in chess cannot contain the same digit.
Same sum lines
All lines sum to the same total.
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