Range: A Geeky Puzzle Game

一個有趣的益智遊戲，這將讓你大呼過癮到您的手機好幾個小時

You have a grid of squares; some squares contain numbers. Your job is to colour some of the squares black, such that several criteria are satisfied:

no square with a number is coloured black.

no two black squares are adjacent (horizontally or vertically).

for any two white squares, there is a path between them using only white squares.

for each square with a number, that number denotes the total number of white squares reachable from that square going in a straight line in any horizontal or vertical direction until hitting a wall or a black square; the square with the number is included in the total (once).

For instance, a square containing the number one must have four black squares as its neighbours by the last criterion; but then it's impossible for it to be connected to any outside white square, which violates the second to last criterion. So no square will contain the number one.

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