Description: chessboard filled with incomplete procedures chessboard question is : They want the three grid plate (triominoes) chessboard incomplete coverage (as shown in Figure 1-2). In this coverage, two three lattice panels can overlap, three lattice panels not cover defective box, but must cover all other box. In such conditions, the required three the total number of grid plate (22k-1)/3. Can certification (22k-1)/3 is an integer. K 0 chessboard of the deterioration can easily be covered, because it does not non-ramshackle box for coverage of the three grid plate number of 0. When k = 1, is the non-existence of three ramshackle box, and this box can be used Figure 3 1-2 in a direction of the three grid plate to cover.
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