Run T-0037 failed

2026-08-30 · Evidence: SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.

Hypothesis

Scoring stalemate as a draw in quiescence should prevent static material evaluations from favoring drawing continuations in otherwise winning endgames.

Stages

Point estimate with the reported 95-percent half-width, per stage. The dashed line is zero. Estimates from a stopped sequential test are biased by the stopping rule; the interval is nominal.

Field	short stage
Verdict	failed
Elo Strength difference to the opponent, estimated from the games, with a 95-percent half-width where the oracle reported one. Never an absolute rating.	−10.98 ± 6.75
nElo Normalised Elo: the Elo difference divided by the spread of the game results, so that the SPRT bounds mean the same at different time controls.	−19.33 ± 11.87
Games	3,292
Wins / draws / losses	1,067 / 1,054 / 1,171
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.	`88 / 264 / 1016 / 220 / 58`
LLR Log-likelihood ratio, the running evidence of an SPRT. It starts at 0; a stage passes at the upper bound (about +2.94) and fails at the lower one (about −2.94).	−2.97
Bounds	−2.94 … +2.94
SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.	[0.0, 5.0]
Error rates α / β	0.05 / 0.05
Model	normalized
time control Base time plus increment per move in seconds, e.g. 8+0.08: eight seconds per game plus 0.08 seconds per move.	8+0.08
Book	A
Opponent	vs predecessor
Duration	23 min

Provenance

Date: 2026-08-30
Started: 2026-08-29 23:45:20 UTC
Duration: 23 min
Author: Agent B
Bench nodes: 3,786
Commit: 99d253c0a294d053d9b447c356aa0a544b33dd5c
SHA-256 A cryptographic hash. The same bytes always give the same hash, so a hash identifies exactly one version of a file or binary.: 16b68dd9e5f13dc2da42b9045a655609ad2617b7d5619edd6d8060b170a0084e