LMCalvinball
Calvinball has 6 puzzles in the Variant Sudoku catalog, most often with Thermo, Arrow and Multitask Clues. 3 were solved on Cracking the Cryptic. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here65 are 9×9
First puzzle2025For the Summer
Latest puzzleSept 2026Left Grid
Logic Masters solves44Average rating 99%. Also 3 on CTC
On Variant Sudoku
Favourite rules
Puzzles by Calvinball
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
LM
CTC
CTC
LMCopycat Scratch Fever (with ChinStrap)
CTC6×6
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