Domino
Released: 2026-09-19
Missing Domino:
meta-llama/llama-4-maverick
meta
The excluded domino is number 0 and 0
anthropic/claude-haiku-4.5
anthropic
By systematically checking all 28 possible dominoes in a standard double-six set, I identified 27 tiles present in the image. The domino [0, 1] (representing one blank and one dot) is missing from the set. This was verified by counting occurrences of each number pairing across all horizontal and vertical domino orientations visible in the image.
google/gemini-3-flash-preview
After listing and checking all 27 tiles present in the image against a standard double-six set, the double-six tile (6, 6) is the only one not found.
openai/gpt-5-image-mini
openai
The excluded domino is number 1 and 4
moonshotai/kimi-k2.5
moonshot
In a standard double-six domino set, each number 0-6 appears exactly 8 times across all tiles. By systematically analyzing the 27 dominoes present in the image and counting the occurrences of each number: Number 0 appears 8 times (in [0,0], [0,1], [0,2], [0,3], [0,4], [0,5], [0,6]), Number 1 appears 8 times, Number 2 appears 8 times, Number 3 appears 8 times, Number 5 appears 8 times (in [0,5], [1,5], [2,5], [3,5], [4,5], [5,5], [5,6]), Number 6 appears 8 times (in [0,6], [1,6], [2,6], [3,6], [5,6], [6,6]), but Number 4 appears only 7 times. The missing domino must be the one containing 4 that is absent: [4,6]. Present are: [0,4], [1,4], [2,4], [3,4], [4,4], [4,5]. Missing is [4,6].
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.