Guess
Reasoning
Scanning all 27 dominoes on the board and comparing against the 28 dominoes of a double-six set, the 2-6 domino is the one that never appears.
Guess
Reasoning
The dominoes present on the board are: 0-0, 0-1, 0-2, 0-4, 0-5, 0-6, 1-1, 1-2, 1-3, 1-4, 1-5, 1-6, 2-2, 2-3, 2-4, 2-5, 2-6, 3-3, 3-4, 3-6, 4-4, 4-5, 4-6, 5-5, 5...
Guess
Reasoning
The board shows the zero dominoes 0-0, 0-1, 0-3, 0-4, 0-5, and 0-6, but no domino with a 0 and a 2. Therefore, the missing domino is 0-2.
Guess
Reasoning
Counted 27 dominoes on the board (28 in a double-six set). All blank-containing dominoes were identified: 0-0, 0-1, 0-2, 0-3, 0-5 and 0-6 are present (7 blank h...
Guess
Reasoning
The board contains 27 dominoes. By systematically checking every possible pair from the double-six set (0-0 through 6-6), the 0-0 domino is the only one that do...