Variant Sudoku

Variant sudoku rule videos

24 short videos, each showing one rule on a small example in under 20 seconds. Every one links to a full lesson with practice.

Sums and pairs

0:15Killer cagesKiller Sudoku Rules Explained in One Short Example

0:18XVXV Sudoku Rules Explained in One Short Example

0:18Kropki dotsKropki Sudoku Dots Explained in One Short Example

Lines

0:15ThermometersThermo Sudoku Rules Explained in One Short Example

0:18ArrowsArrow Sudoku Rules Explained in One Short Example

0:18German whispersGerman Whispers Sudoku Explained in One Short Example

0:15Renban linesRenban Lines Explained in One Short Example

0:15PalindromesPalindrome Sudoku Lines Explained in One Short Example

0:15Dutch whispersDutch Whispers Sudoku Explained in One Short Example

0:18Entropic linesEntropic Lines Sudoku Explained in One Short Example

0:15Parity linesParity Lines Sudoku Explained in One Short Example

0:15Region sum linesRegion Sum Lines Explained in One Short Example

0:18Between linesBetween Lines Sudoku Explained in One Short Example

Whole-grid rules

0:15Anti-knightAnti-Knight Sudoku Explained in One Short Example

0:15Anti-kingAnti-King Sudoku Explained in One Short Example

0:15Non-consecutiveNon-Consecutive Sudoku Explained in One Short Example

0:15DiagonalsDiagonal Sudoku (Sudoku X) Explained in One Short Example

Outside clues and specials

0:15Sandwich sumsSandwich Sudoku Explained in One Short Example

0:12Little killerLittle Killer Sudoku Explained in One Short Example

0:15Odd and even cellsOdd Even Sudoku Explained in One Short Example

0:12QuadruplesQuadruple Sudoku Explained in One Short Example

0:15Extra regionsExtra Regions Sudoku Explained in One Short Example

0:15X-sumsX-Sums Sudoku Explained in One Short Example

0:15Fog of warFog of War Sudoku Explained in One Short Example