Domino
Released: 2026-02-18
Missing Domino:
meta-llama/llama-4-maverick
meta
The excluded domino is number 0 and 0
openai/gpt-5-image-mini
openai
I identified the 27 domino tiles shown and compared them to the full double-six set; every tile except the 4–5 domino appears in the image, so [4,5] is missing.
qwen/qwen3-vl-30b-a3b-thinking
qwen
In a standard double-six set, there are 28 dominoes. After analyzing the provided image (27 dominoes), the missing tile is the double-one domino ([1,1]), as all other dominoes (including other doubles and mixed pairs) are present.
x-ai/grok-4-fast
x-ai
After counting the occurrences of each number across all 54 halves in the 27 dominoes, numbers 0-3 and 6 appear 8 times each, while 4 and 5 appear 7 times each. This indicates the missing domino is [4|5].
moonshotai/kimi-k2.5
moonshot
In a standard double-six domino set, each number 0-6 appears exactly 8 times across all dominoes (with [0,0] counting as two zeros). By counting the occurrences of each number in the image: the number 0 appears exactly 7 times, and the number 4 appears exactly 7 times. All other numbers (1, 2, 3, 5, 6) appear 8 times. Since two numbers appear with count 7, the missing domino is the pair [0,4]. This is confirmed by verifying that dominoes [0,0], [0,1], [0,2], [0,3], [0,5], and [0,6] are all present in the image, leaving only [0,4] as the missing zero-domino.
anthropic/claude-haiku-4.5
anthropic
By systematically checking all 28 possible dominoes in a standard double-six set (all pairs from 0-0 to 6-6), the domino [4, 4] is the only one that does not appear in the image. All other 27 dominoes are present.
google/gemini-3-flash-preview
After cataloging all 27 dominoes in the image and comparing them against a standard double-six set, all combinations are present EXCEPT for the double-six [6, 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.