CTC7×7gdc
gdc has 9 puzzles in the Variant Sudoku catalog, most often with Arrow, Killer and XV. 5 were solved on Cracking the Cryptic. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here96 are 9×9
First puzzle2023The Knights Who Whisper "V"
Latest puzzleAug 2026Floating Through Space
Logic Masters solves966Average rating 95% · 5 on CTC
On Variant Sudoku
Favourite rules
Puzzles by gdc
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
CTC7×7
CTC
LM4×9Twin Paradox (Holes, Gemini)
LM6×6Peeking Snowman
CTC
CTC
LMQuantum Balance (by gdc?)
CTC
LMThe Knights Who Whisper "V"
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