Enter a number into each empty cell, so that, including the given numbers, all numbers from 1 to X appear exactly once. (X is the number of cells) Consecutive numbers must be placed in horizontally, vertically or diagonally neighbouring cells.
(Rules and example from WPC 2019 IB)
- Rook Hidato: consecutive numbers can't be placed in diagonally neighbouring cells.
History of the puzzle
The name, meaning "my puzzle," was given to by Gyora M. Benedek (Israel), in 2007.
The rule itself is quite simple and possibly re-invented many times. Four-direction version has been at least since 1981, where the puzzles were written by Steve Wilson (USA).
Appearances in the past WPCs
- WPC 2019/World Cup Round 2 by Jürgen Blume-Nienhaus
- WPC 2017/Round 5 (Irregular grid) by Deb Mohanty
- WPC 2016/Round 5 (Hidato, Hexagonal Hidato) by Matúš Demiger