Stackruns

Run T-0032 passed

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

Hypothesis

Ordering pseudo-legal moves and rejecting self-check only for each attempted move should strengthen search by avoiding full-list legalization at nodes that cut off after examining only a few moves.

Predecessor set to: T-0032

Stages

Elo against the predecessorElo intervals: short stage +40.25 ± 13.25.0+20+40short stage+40.25 ± 13.25short stage · passed+40.25 ± 13.25 Elo · 1,344 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.+40.25 ± 13.25+1,075.01
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.+56.95 ± 18.57+3,829.68 ± 30.83
Games1,344488
Wins / draws / losses537 / 425 / 382487 / 0 / 1
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.32 / 96 / 310 / 153 / 810 / 0 / 1 / 0 / 243
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+2.96
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
Duration9 min9 min

Provenance

Date
2026-08-29
Started
2026-08-29 17:41:29 UTC
Duration
19 min
Author
Agent B
Bench nodes
3,786
Commit
39c77530a00459235f28f6d4cccd9e64df699994
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.
1979a435cdc925511d4333f517e2d9de220a5a445eccbe33a63cd02df7308241