Stackruns

Run T-0045 passed

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

Hypothesis

Deferring quiescence legality checks until a move is tried and inlining debug-checked board access should strengthen Coherent by avoiding duplicate make, check, and unmake work, especially for full check-evasion lists.

Predecessor set to: T-0045

Stages

Elo against the predecessorElo intervals: short stage +44.77 ± 14.83.0+20+40+60short stage+44.77 ± 14.83short stage · passed+44.77 ± 14.83 Elo · 1,350 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.+44.77 ± 14.83+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.+56.62 ± 18.53+5,427.16 ± 30.83
Games1,350488
Wins / draws / losses551 / 421 / 378486 / 2 / 0
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.44 / 116 / 243 / 167 / 1050 / 0 / 0 / 2 / 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).+2.95+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
Duration10 min8 min

Provenance

Date
2026-08-30
Started
2026-08-30 18:11:00 UTC
Duration
19 min
Author
Agent B
Bench nodes
3,786
Commit
474544fb2bb8f60d02b394e3fcc04afe01eea3d2
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.
de68602cfb6bbf8c6d56c77a10fcffb6d947645454a8c5709820028016aab218