CTCHDev
HDev has one puzzle in the Variant Sudoku catalog, most often with Anti-King, Anti-Knight and Ratio. One was solved on Cracking the Cryptic. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here1All 9×9
First puzzle2026One (King) to Nine (Knights)
Latest puzzleJun 2026One (King) to Nine (Knights)
On Cracking the Cryptic1video
On Variant Sudoku
Favourite rules
Puzzles by HDev
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
CTCIs this you? Send a correction, ask for a feature, or have your puzzles taken out of the catalog.Contact us