Run T-0087 passed

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

Hypothesis

Capture-only ProbCut tests selected captures using a shallow search against a raised beta to prune deep fail-high nodes earlier.

Wording edited for publication from the German entry; the register carries the author’s own text.

Stages

Elo against the predecessorElo intervals: short stage +15.63 ± 10.58; long stage +14.00 ± 9.64.0+10+20short stage+15.63 ± 10.58short stage · passed+15.63 ± 10.58 Elo · 2,202 gameslong stage+14.00 ± 9.64long stage · passed+14.00 ± 9.64 Elo · 2,260 games
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 stagelong stage
Verdictpassedpassed
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.+15.63 ± 10.58+14.00 ± 9.64
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.+21.48 ± 14.51+20.83 ± 14.32
Games2,2022,260
Wins / draws / losses712 / 877 / 613694 / 963 / 603
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.65 / 247 / 408 / 286 / 9551 / 245 / 466 / 298 / 70
LLR Log-likelihood ratio, the running evidence of an SPRT. It starts at 0; a stage passes at the upper bound and fails at the lower one.+3.00+2.95
Bounds−2.94 … +2.94−2.94 … +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, 10.0][0.0, 10.0]
Error rates α / β0.05 / 0.050.05 / 0.05
Modelnormalizednormalized
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+0.0840+0.4
BookAB
Opponentvs predecessorvs predecessor
Duration16 min1 h 26 min

Provenance

Date
2026-09-18
Started
2026-09-18 11:14:12 UTC
Duration
1 h 43 min
Author
Agent X
Epoch
5
Gatekeeper
passed
Bench nodes
2,608