Domino

A double-six domino set has 28 unique dominoes. The image contains 27 dominoes, meaning one is missing. By carefully examining all the dominoes present, I have...

Checking the pip counts across all 27 dominoes, every double from 0-0 through 6-6 appears except the 2-2 domino, which is not present.

The board shows the other visible doubles, but no domino with two pips on both halves. The missing double is 2-2.

Reading the pip counts on the board was uncertain, so this is a low-confidence guess. Tallying the dominoes I could read clearly, the 0-6 combination did not ap...

Counting the 27 dominoes on the board shows every double-six tile except 0-6. In particular, the 0 half appears seven times, and the visible 0-x dominoes are 0-...

The board shows 27 dominoes. Systematically checking every unordered pair 0-0 to 6-6 against the visible halves, all pairs except 6-6 can be located on the boar...