Domino
Released: 2026-04-24
Missing Domino:
meta-llama/llama-4-maverick
meta
The excluded domino is number 2 and 2
google/gemini-3-flash-preview
A standard double-six domino set consists of 28 unique tiles ranging from 0-0 to 6-6. By counting the tiles in the image, 27 are present. Systematic checking of the tiles reveals that the tile representing the pair [0, 3] (blank and three) is missing from the collection.
anthropic/claude-haiku-4.5
anthropic
By systematically checking all 28 possible dominoes in a standard double-six set (all combinations of numbers 0-6), I identified that the domino [0, 1] is the only one missing from the 27 dominoes shown in the image. All other dominoes including [0, 0], [0, 2] through [0, 6], and all combinations of [1, 1] through [6, 6] are present.
anthropic/claude-sonnet-4.6
anthropic
By systematically cataloging all visible dominoes in the image and comparing against the full standard set of 28 dominoes (0-0 through 6-6), I can identify which one is missing. After carefully counting all dots on each tile, the domino with 0 on one side and 3 on the other (0-3) appears to be absent from the displayed set of 27 dominoes.
openai/gpt-5-image-mini
openai
I examined each of the 27 tiles in the image and found every unordered pair from the double-six set except the domino combining 2 and 4. No tile showing a 2 on one side and a 4 on the other (in either orientation) is present, so the excluded domino is [2,4].
x-ai/grok-4-fast
x-ai
After analyzing the image and identifying all 27 visible dominoes by counting pips on each half, the standard set is missing the [3|5] domino.
moonshotai/kimi-k2.5
moonshot
By systematically identifying all 27 dominoes present in the image and comparing against the complete set of 28 dominoes in a double-six set, every domino from [0,0] through [6,6] except one can be located. The dominoes [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], [2,6], [3,3], [3,4], [3,5], [3,6], [4,5], [4,6], [5,5], [5,6], and [6,6] are all present. The only domino not appearing in the image is the double-four [4,4].
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.