Seeded Dataset

Lichess Open Database

Chess (move-level) · imported 2026-04-12 · sha256:9f2a…c41b

← DatasetsSeeded Demo
Records
4,812,044
Actors
18,204
Outcomes
Stockfish eval (100%)
Imported
2026-04-12
Status
calibrated

Schema Mapping

source → DecisionEvent
source fieldDecisionEvent field
player_idactor_id
movedecision
stockfish_evalground_truth
plysequence_idx_case
clock_mscontext_features.time_remaining

Data Quality

Actor Coverage100.0%
Outcome Coverage100.0%
Temporal Coverage100.0%
Ground Truth Confidence99.0%

Calibration Readiness

96
/ 100
Ready

Stockfish provides deterministic ground truth at every ply. Player identity is persistent across games. Full temporal ordering available.

Sample Records

first 3 raw rows
game_idplayer_idplymoveclock_msstockfish_eval
g_8812p_00117Nxd564200-42
g_8812p_04418exd571040-48
g_8813p_00119Qh458110-120