Stackruns

Run T-0025 passed

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

Hypothesis

Pruning non-checking, non-promotion quiescence captures that cannot reach alpha by a material delta bound or have a negative static exchange evaluation should strengthen Coherent by spending fewer nodes on unpromising leaf exchanges.

Predecessor set to: T-0025

Stages

Elo against the predecessorElo intervals: short stage +60.64 ± 17.22.0+20+40+60+80short stage+60.64 ± 17.22short stage · passed+60.64 ± 17.22 Elo · 1,036 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.+60.64 ± 17.22+1,075.01
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.+76.07 ± 21.16+5,427.16 ± 30.83
Games1,036488
Wins / draws / losses460 / 295 / 281486 / 2 / 0
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.37 / 68 / 177 / 151 / 850 / 0 / 0 / 2 / 242
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).+2.96+2.96
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, 5.0][0.0, 3.0]
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 reference v0
Duration7 min9 min

Provenance

Date
2026-08-29
Started
2026-08-29 09:50:06 UTC
Duration
17 min
Author
Agent B
Bench nodes
3,780
Commit
2828f34541d151224f36f2b8cdb66b5b5e23813a
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.
2a454ad66b31b7888e47e6774d998b35df22b7b44077f6d1a445f463c9c0350a