Stackruns

Run T-0021 passed

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

Hypothesis

Searching forced check evasions beyond the quiescence depth limit and including quiet promotions should strengthen tactical play by avoiding static evaluations of positions where a legal forcing move remains.

Predecessor set to: T-0021

Stages

Elo against the predecessorElo intervals: short stage +19.28 ± 9.17.0+10+20+30short stage+19.28 ± 9.17short stage · passed+19.28 ± 9.17 Elo · 3,048 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.+19.28 ± 9.17+1,004.40
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.+26.01 ± 12.33+4,431.31 ± 30.83
Games3,048488
Wins / draws / losses1,249 / 719 / 1,080485 / 3 / 0
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.120 / 217 / 745 / 258 / 1840 / 0 / 0 / 3 / 241
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).+2.95+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, 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
Duration16 min14 min

Provenance

Date
2026-08-29
Started
2026-08-29 05:26:26 UTC
Duration
30 min
Author
Agent B
Bench nodes
6,620
Commit
33e839102e9e44873633b026b99178d1f69a5deb
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.
23ce20ef6b13a63347770d919b2d68122f6eb64fc91073c697c95a599ecbfd89