CTCHenk Nicolai
Henk Nicolai has one puzzle in the Variant Sudoku catalog, most often with Indexing and Killer. 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 puzzle2025Full Circle
Latest puzzleOct 2025Full Circle
On Cracking the Cryptic1video
On Variant Sudoku
Favourite rules
Puzzles by Henk Nicolai
Newest first. “Play here” opens the puzzle in Variant Sudoku, loaded live from the setter’s own link.
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