Variant Sudoku

James Kopp

James Kopp has 17 puzzles in the Variant Sudoku catalog, most often with XV, German Whispers and Fog of War. 17 were solved on Cracking the Cryptic. Every puzzle below links to its original home, so the setter gets the credit and the traffic.

Browse in Explore
Puzzles here17All 9×9
First puzzle2025Threedoku
Latest puzzleSept 2026Diagonal π
On Cracking the Cryptic17videos

Favourite rules

XV7German Whispers4Fog of War4Dutch Whispers4Arrow4Ratio3

Puzzles by James Kopp

Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.

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