Hidoku

This genre usually goes by another, more common, trademarked name.

Hidoku puzzles

Pedro

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PinkHoodie

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This is a doppel with the adjacent-knight variant puzzle in the section below.

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Anurag Sahay

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Variants

hex

This puzzle uses the hex variant grid:

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math

This uses a novel math variant, inspired by different genres such as Amarûne and Erich Friedman's Cross-math and number puzzles.

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adjacent-ortho

This puzzle uses the adjacent-ortho variant - only orthogonally adjacent tiles are seen as sequential.

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adjacent-knight

Knight + Classic Doppel pair: (King or Knight).

Variant adjacent-knight - adjacent tiles are those a knight's move away.

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kropki

loading... puzzle12 2023-12-30 Corrected a non-uniqueness found by Martin Ender (Menderbug) and Noneuclidery - thank you! 2023-12-30 Added variants adjacent-knight, adjacent-ortho with a set of puzzles by PinkHoodie - thank you! 2024-01-05 PinkHoodie made a puzzle using the kropki variant! 2024-01-06 Numberline mode added (alpha), a suggestion by Eli Doris (TwoHoleStraw), Calica, Sophie (Edderiofer) and Anurag Sahay 2024-01-08 A math variant was devised, with a puzzle! 2024-12-22 ^puzzletters PinkHoodie made 1 Hidoku (classic) puzzle - danke! 2024-12-28 ^puzzletters PinkHoodie mailed 2 Hidoku (classic) puzzles - kiitos! 2025-02-09 ^puzzletters PinkHoodie constructed 1 Hidoku (classic) puzzle, part of the 16x6 series! 2025-04-04 ^puzzletters Anurag Sahay prepared 1 Hidoku (classic) puzzle - gracias!