Domino
Released: 2026-06-04
Missing Domino:
anthropic/claude-sonnet-4.6
anthropic
I systematically catalogued all visible dominoes in the image and compared them against the complete set of 28 dominoes (0-0 through 6-6). After checking each possible combination, the domino [0,3] (blank|three) was not found among the 27 dominoes shown.
meta-llama/llama-4-maverick
meta
The excluded domino is number 0 and 0
anthropic/claude-haiku-4.5
anthropic
By systematically cataloging all 27 visible dominoes in the image and comparing against the complete set of 28 possible dominoes (all pairs from 0-6), the domino [2, 4] is the only one that does not appear in the collection.
google/gemini-3-flash-preview
After cataloging all 27 dominoes in the image and comparing them to a full double-six set, the [6, 6] tile is the only one missing.
openai/gpt-5-image-mini
openai
I identified all 28 double-six domino combinations among the 27 tiles in the image and found that the tile with pips 2 and 5 is the only one not present, so the excluded domino is [2,5].
moonshotai/kimi-k2.5
moonshot
The image displays 27 dominoes from a standard double-six set (which contains 28 total dominoes). By systematically checking the visible combinations: all doubles are present ([0,0], [1,1], [2,2], etc.); the [0,n] series shows [0,0], [0,3], [0,4], [0,5] but not [0,1], [0,2], or [0,6]; the [1,n] series shows [1,1], [1,3], [1,4], [1,5], [1,6]. The domino with the minimum number of total pips (1 pip) is missing - this would be the [0,1] domino. Additionally, no domino in the image displays exactly one pip (which would be the distinguishing feature of [0,1]), confirming it as the excluded piece.
Methodology Note
Each model receives the same domino puzzle grid. Models are tasked with identifying the missing domino using only visual clues from the grid. Their answers are evaluated without feedback or retries.