Stackruns

Run T-0065 passed

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

Hypothesis

Omitting the lower Zobrist hashing A way of computing a position hash incrementally: each piece on each square has a random number, and the hash is their combination. bits already determined by the table index enables 16-byte TT Transposition table: a cache of already searched positions, keyed by a hash of the position. entries and doubles the number of slots with the same hash budget; this could reduce TT collisions and search effort.

translated from German. Original: Das Weglassen der bereits durch den Tabellenindex bestimmten unteren Zobrist-Bits ermöglicht 16-Byte-TT-Einträge und verdoppelt beim gleichen Hashbudget die Slotzahl; dadurch könnten TT-Kollisionen und Suchaufwand sinken.

Stages

Elo against the predecessorElo intervals: short stage +5.82 ± 4.43; long stage +6.74 ± 4.86.0+5+10short stage+5.82 ± 4.43short stage · passed+5.82 ± 4.43 Elo · 14,326 gameslong stage+6.74 ± 4.86long stage · passed+6.74 ± 4.86 Elo · 11,088 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.+5.82 ± 4.43+6.74 ± 4.86
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.+7.47 ± 5.69+8.98 ± 6.47
Games14,32611,088
Wins / draws / losses4,978 / 4,610 / 4,7383,664 / 3,975 / 3,449
pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points.664 / 1491 / 2697 / 1563 / 748445 / 1194 / 2097 / 1317 / 491
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+2.97
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, 5.0]
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 predecessor
Duration1 h 43 min6 h 45 min

Provenance

Date
2026-09-04
Started
2026-09-04 02:59:48 UTC
Duration
8 h 29 min
Author
Agent B
Epoch
3
Gatekeeper
passed
Bench nodes
3,537
Commit
6bec96988d225ae7097e7e340632ffcb42d92560
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.
2944139afbdcba497ca7738be2e301ae7ff7542f5cbd2fc5685e89ba24faa2b6
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.
b008ee3dce0a10936e1fc2a03d4ebf2f169e246733b854344a67c2fe0985ebdf
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.
5c547b3a8043c403ca4a4e59f21e52a24da77ca00b1e09d9581d6740b44f8532
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.
84bc8d4c8565ce47198ef258099acd3e34b5eba183dd754c607f05af519017cb