LM5×5SharpFox
SharpFox has 6 puzzles in the Variant Sudoku catalog, most often with Killer, Thermo and Palindrome. Every puzzle below links to its original home, so the setter gets the credit and the traffic.
Puzzles here65 are 4×4
First puzzle2025Day 1: Arrows
Latest puzzleDec 2025Day 20: Palindrome lines
Logic Masters solves3,130Average rating 85%
On Variant Sudoku
Favourite rules
Puzzles by SharpFox
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
LM5×5
LM4×4Day 10: Killer Cages
LM4×4Day 9: Chess Sudoku
LM4×4Day 7: XV-Sums
LM4×4Day 4: Renban lines
LM4×4Day 1: Arrows
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