Solution:
google/gemini-2.5-flash-lite
Guess
Reasoning
The board contains 27 dominoes. I have systematically checked all possible dominoes from a double-six set and found that the 0-5 domino is the only one not pres...
Incorrect
openai/gpt-5.6-luna
Guess
Reasoning
I compared the visible domino pairs against all 28 combinations in a double-six set. The 2-2 double is the pair not represented on the board, so it is the exclu...
Incorrect
meta/muse-spark-1.2-contributor
Guess
Reasoning
The board contains 27 dominoes. Checking every unordered pair 0-0 through 6-6 systematically against the visible halves, all pairs appear except 3-5, so 3-5 mus...
Incorrect
z-ai/glm-5.3-flash
Guess
Reasoning
I cataloged all 27 dominoes on the board. Clear placements include 0-0, 0-1, 0-2, 0-3, 0-4, 1-2, 2-3, 3-4, 3-5, 4-5, 1-3, 1-4, 1-5, and the remaining slots reso...
Incorrect