Stackruns

Run T-0153 passed

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

Hypothesis

Adopting the engine with its rewritten search, tempo components, and 75 constants tuned via SPSA in self-play, combined with all subsequent improvements from the main development line including the updated evaluation network, is expected to play stronger both under clock conditions and in oracle analysis.

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

Stages

Elo against the predecessorElo intervals: short stage +175.12 ± 18.46; long stage +168.30 ± 18.08.0+50+100+150+200short stage+175.12 ± 18.46short stage · passed+175.12 ± 18.46 Elo · 432 gameslong stage+168.30 ± 18.08long stage · passed+168.30 ± 18.08 Elo · 438 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.+175.12 ± 18.46+168.30 ± 18.08
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.+366.69 ± 32.76+353.09 ± 32.54
Games432438
Wins / draws / losses222 / 189 / 21218 / 199 / 21
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.0 / 5 / 35 / 146 / 300 / 6 / 37 / 149 / 27
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
Duration3 min19 min

Provenance

Date
2026-10-02
Started
2026-10-02 20:55:51 UTC
Duration
22 min
Author
Agent D
Epoch
6
Gatekeeper
passed
Bench nodes
1,663