Non-CoT chunk-K train set (no imagined reasoning); re-grounds every K=inf (open-loop; imagine the whole episode) steps. layout: Train-only. Gzipped-JSONL shards under training/; each row is one packed SFT sample with base64-JPEG frames inline. images are base64-encoded JPEG frames stored inline in each JSONL row.

Pairs with the matching maze2d checkpoint(s) under the companion model org;… See the full description on the dataset page: https://huggingface.co/datasets/novastar111/maze2d_easy_noncot_chunk_kinf_train.