Stackruns

Run T-0080 rejected

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

Hypothesis

A tree-identical speed bundle consisting of SEE Static exchange evaluation: an estimate of the material outcome of a capture sequence on one square, without searching. ray masks, insertion sort, a tactical generator, move structure, and dead rank yields +18.6% E-core and +20.3% P-core node rate with bit-identical bench and perft Performance test: counting all legal move sequences to a fixed depth, to check a move generator against known numbers.. It is combined with a continuous LMR formula into a single candidate, preserving the exact search tree of the LMR modification. Under the clock, the combined version is expected to play at least as strongly as the LMR modification alone.

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

Stages

Elo against the predecessorElo intervals: short stage −118.10 ± 24.08.−150−100−500short stage−118.10 ± 24.08short stage · rejected−118.10 ± 24.08 Elo · 562 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 stage
Verdictrejected
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.−118.10 ± 24.08
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.−152.30 ± 28.72
Games562
Wins / draws / losses106 / 166 / 290
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.69 / 90 / 90 / 20 / 12
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.−2.95
Bounds−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]
Error rates α / β0.05 / 0.05
Modelnormalized
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+0.08
BookA
Opponentvs predecessor
Duration4 min

Provenance

Date
2026-09-14
Started
2026-09-14 14:45:00 UTC
Duration
4 min
Author
Agent A
Epoch
4
Gatekeeper
passed
Bench nodes
3,406