Stackruns

Run T-0040 passed

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

Hypothesis

Retaining transposition moves across searches in an explicit game session should strengthen play by improving move ordering on successive positions while generation-scoped bounds avoid reusing clock- or repetition-dependent scores.

Predecessor set to: T-0040

Stages

Elo against the predecessorElo intervals: short stage +12.98 ± 7.54.0+10+20short stage+12.98 ± 7.54short stage · passed+12.98 ± 7.54 Elo · 5,196 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.+12.98 ± 7.54+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.+16.27 ± 9.45+7,659.38 ± 30.89
Games5,196486
Wins / draws / losses1,875 / 1,640 / 1,681485 / 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.240 / 540 / 906 / 610 / 3020 / 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
Duration37 min9 min

Provenance

Date
2026-08-30
Started
2026-08-30 07:44:31 UTC
Duration
46 min
Author
Agent B
Bench nodes
3,786
Commit
7a4c4d7887fae20886a72cf5a4e8bdf9a5c6f859
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.
be14e4f407861744b3a9d1a19897b7a02274da8e22dd38841ca8f9ee1a4648d7