Auto71%Harbor: pendingMultimodalAbstract Reasoning

FG-Sudoku

Fine-Grained Sudoku Benchmark

A diagnostic benchmark for evaluating MLLMs on visual Sudoku reasoning, categorized by grid size and deductive steps to measure long-horizon multimodal constraint satisfaction.

How to run

ltb · fg-sudoku
$ npm i -g lettokenburn-cli
$ ltb bench info fg-sudoku

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

12 sourced entries
HarnessSourceConfidenceLink
Gemini 2.5 Pro0.9N/AIndependentmediumOct 9, 2026arxiv.org
o30.8N/AIndependentmediumOct 9, 2026arxiv.org
Gemini 2.5 Flash0.7N/AIndependentmediumOct 9, 2026arxiv.org
Claude Sonnet 4 (2025-05-14)0.6N/AIndependentmediumOct 9, 2026arxiv.org
Qwen3-VL-8B-Instruct0.4N/AIndependentmediumOct 9, 2026arxiv.org
GPT-4o0.3N/AIndependentmediumOct 9, 2026arxiv.org
DeepSeek-V30.3N/AIndependentmediumOct 9, 2026arxiv.org
Qwen2.5-VL-7B0.2N/AIndependentmediumOct 9, 2026arxiv.org
InternVL3.5-8B-Instruct0.2N/AIndependentmediumOct 9, 2026arxiv.org
Video-R10.0N/AIndependentmediumOct 9, 2026arxiv.org
InternVL3-8B0.0N/AIndependentmediumOct 9, 2026arxiv.org
LLaVA-NeXT-34B0.0N/AIndependentmediumOct 9, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

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About

FG-Sudoku presents visual Sudoku puzzles of varying difficulty, quantified by grid size and required deductive steps. It serves as a fine-grained diagnostic tool for assessing multi-step deductive reasoning over local and global constraints.

Scoring is based on binary outcome accuracy (correct/incorrect) without LLM-as-judge. Evaluations show frontier MLLMs fail on complex 9x9 instances due to long-range dependency failures, highlighting reward sparsity in standard RLVR.