Domino
Released: 2026-07-28
Missing Domino:
meta-llama/llama-4-maverick
meta
The excluded domino is number 2 and 1
anthropic/claude-haiku-4.5
anthropic
By systematically checking all 28 possible domino combinations from 0-0 through 6-6, I identified all 27 dominoes visible in the image. The domino [0, 1] (one side blank, one side with a single dot) is the only combination from the standard double-six set that is not present in this image.
google/gemini-3-flash-preview
After cataloging all tiles in the image, all combinations from the standard double-six set are present except for the one representing the numbers 4 and 6.
openai/gpt-5-image-mini
openai
Counting the pips on all visible halves shows the numbers 2 and 5 each occur one time fewer than the others, so the missing domino is 2 and 5.
moonshotai/kimi-k2.5
moonshot
After identifying all 27 dominoes present in the image, the complete double-six set was checked. The dominoes found include: [0,0], [0,1], [0,2], [0,3], [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], [3,3], [3,4], [3,5], [3,6], [4,4], [4,5], [4,6], [5,5], [5,6], and [6,6]. The only domino from the standard 28-piece set not present is [2,6].
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.