LMPianoForte
PianoForte has 2 puzzles in the Variant Sudoku catalog, most often with Killer, Yin-Yang and Region Sum Lines. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here2All 9×9
First puzzle2026Region Prime Line I
Latest puzzleSept 2026To Prime or Not To Prime II
Logic Masters solves10
On Variant Sudoku
Favourite rules
Puzzles by PianoForte
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
LM
LMRegion Prime Line I
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