Hidato

Place every integer in the puzzle's range so each number touches the next one. Hidato allows both orthogonal neighbors, such as up or left, and diagonal neighbors, so the completed board forms a continuous numerical path.

Hidato was invented by Israeli mathematician Gyora Benedek. Benedek's design uses consecutive numbers as its core rule.

Yes. A valid next number may be orthogonally or diagonally adjacent, giving a cell on a square grid up to eight surrounding directions.

Hidato's main constraint is adjacency between consecutive numbers, while Sudoku centers on avoiding repeated digits in rows, columns, and boxes. The target in Hidato is a connected path from the first number through the last number in the chosen range.