English: Gomory's theorem: Removing any two oppositely-colored squares of a chessboard leaves a region that can be tiled by dominos. The two removed squares partition a Hamiltonian cycle through the squares into one (left) or two (right) even-length paths, allowing the modified chessboard to be tiled by dominos laid along the paths.
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Gomory's theorem: Removing any two oppositely-colored squares of a chessboard leaves a region that can be tiled by dominos