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Nurikabe Tapa (708)
Instruction:
Blacken some empty cells so that the grid is divided into white areas, each containing exactly one number and with the same area in cells as that number. Moreover, numbers in cells indicate the lengths of the consecutive blackened blocks in the neighboring cells. Two white areas may only touch diagonally. All black cells must be orthogonally connected, but no 2×2 area can be entirely blackened.