Stackruns

Run T-0043 passed

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

Hypothesis

Preallocating the pseudo-legal move vector should strengthen Coherent because it removes the dominant repeated growth allocations while preserving move order and retaining automatic vector growth as a safe fallback.

Predecessor set to: T-0043

Stages

Elo against the predecessorElo intervals: short stage +7.83 ± 5.35.0+5+10short stage+7.83 ± 5.35short stage · passed+7.83 ± 5.35 Elo · 8,784 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.+7.83 ± 5.35+1,194.89
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.+10.64 ± 7.27+7,659.38 ± 30.89
Games8,784486
Wins / draws / losses3,121 / 2,740 / 2,923485 / 1 / 0
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.340 / 860 / 1857 / 932 / 4030 / 0 / 0 / 1 / 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+2.95
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
Duration1 h 02 min9 min

Provenance

Date
2026-08-30
Started
2026-08-30 09:58:14 UTC
Duration
1 h 12 min
Author
Agent B
Bench nodes
3,786
Commit
6257300b04a35f760e8acc86d8eaeaf345b63373
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.
b43988e2551e61da8b041af4dfbf3e8b739a1a72dcef69b7dd289987a9eafdd7