CTCJames Sinclair
James Sinclair has 2 puzzles in the Variant Sudoku catalog, most often with Arrow, Consecutive and Killer. 2 were solved on Cracking the Cryptic. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here21 are 9×9
First puzzle2025House of Cards
Latest puzzleMar 2026Seven Ate Nine
On Cracking the Cryptic2videos
On Variant Sudoku
Favourite rules
Puzzles by James Sinclair
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
Is this you? Send a correction, ask for a feature, or have your puzzles taken out of the catalog.Contact us