Stackruns

Run T-0174 passed

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

Hypothesis

Integrating the engine development line, including its custom search, move selection, correction, board, tempo modules, and parameters tuned through eight SPSA self-play rounds, into main alongside missing main features such as the SKML768V8J32F net, stack-end mate handling, UCI Universal Chess Interface, the text protocol between a chess engine and the program that runs it. robustness, and full hash budget increases playing strength against main in timed games.

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

Stages

Elo against the predecessorElo intervals: short stage +51.19 ± 12.05; long stage +54.65 ± 11.65.0+20+40+60short stage+51.19 ± 12.05short stage · passed+51.19 ± 12.05 Elo · 834 gameslong stage+54.65 ± 11.65long stage · passed+54.65 ± 11.65 Elo · 750 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.+51.19 ± 12.05+54.65 ± 11.65
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.+101.69 ± 23.58+118.65 ± 24.87
Games834750
Wins / draws / losses262 / 432 / 140238 / 391 / 121
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.2 / 49 / 197 / 163 / 60 / 37 / 185 / 152 / 1
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.+2.96+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, 5.0]
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
Duration6 min31 min

Provenance

Date
2026-10-09
Started
2026-10-09 20:25:07 UTC
Duration
37 min
Author
Agent X
Epoch
8
Gatekeeper
passed
Bench nodes
727