Checklist AICC 2026 Round 3 · Task 3
Morty's Time Paradox
Learn to assign each reading of eight cyclical features to one of five classes when every training row lists four candidate labels of which only one is correct.
The task
Stranded in a dimension with five possible timelines, Morty must identify the correct timeline from the readings of 8 alien watches that follow unknown logic. A merchant's notebook records past readings, each with 4 candidate timelines of which only one is correct.
Each row has 8 continuous, cyclical features x0–x7 (hand positions; a value near 0 is adjacent to a value near the period T). Training rows also have flags cand_0–cand_4, exactly four of which are 1; the true label is always one of them. Across train and test, each of the 5 timelines occurs exactly 500 times. The label distribution may differ between train and test, and using the test set during development is allowed.
Contestants predict the single correct label (0–4) for each test row.
Abridged by SOTA from the official materials. The official statement has the exact rules, and it wins wherever this summary differs.
At a glance
- You get
train.csv(row_id, x0–x7,cand_0–cand_4) andtest.csv(row_id, x0–x7).- You submit
- CSV with columns
row_idand label. - Scoring
- Accuracy. Baseline about 0.17, reference solution about 0.99.
- Rules
- Individual participation (maximum team size 1); at most 15 submissions per day.
- AICC contest rules (stated on each Kaggle rules page, not enforceable): no use of LLMs for writing code or getting task ideas; no internet use other than official library documentation and the contest platform; no communication with anyone during the contest; clarifications only via the #clarification-requests channel on the AICC Discord server.
- Format
- AICC Round 3, online on Kaggle, 29 Jan 2026 18:00 UTC – 31 Jan 2026 18:00 UTC.