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Number Link consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other.

Number Link consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other.

Number Link consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other.

Number Link consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other.

250 Challenging Logic Puzzles 5x5.Hitori (from Japanese "Hitori ni shite kure"; literally "let me alone") is played on a grid of squares. At the beginning, each cell contains a number. The goal is to paint out some cells so that there are no duplicate numbers in any row or column, similar to the solved state of a Sudoku puzzle (except with black squares added to the grid).Orthogonal connections are important as well; painted-out (black) cells cannot be connected orthogonally, and the other cells must be connected orthogonally in a single group (i.e. no two black squares can be adjacent to each other, and all un-painted squares must be connected, horizontally or vertically, to create a single shape).