Run T-0250 rejected
· Evidence: SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds or the game limit fixed in advance; then the test stops.
Hypothesis
Disabling the learning of the static evaluation correction at the end of a node specifically when the node does not produce a beta cutoff and the fully searched move loop contained exactly one legal move, while continuing to learn at all beta-cutoff nodes and all nodes with at least two legal moves, will increase the playing strength of the engine.
Wording edited for publication from the German entry; the register carries the author’s own text.
Stages
| Field | short stage |
|---|---|
| Verdict | rejected |
| 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. | −0.04 ± 1.69 |
| nElo Normalised Elo: relates the mean score excess of a colour-swapped pair to the spread of the pair results. | −0.09 ± 4.10 |
| Games | 27,538 |
| Wins / draws / losses | 6,350 / 14,835 / 6,353 |
| pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points. | 15 / 2273 / 9193 / 2276 / 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. | −2.96 |
| Bounds | −2.94 … +2.94 |
| SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds or the game limit fixed in advance; then the test stops. | [0.0, 5.0] |
| Error rates α / β | 0.05 / 0.05 |
| Model | normalized |
| 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 |
| Book | A |
| Opponent | vs predecessor |
| Duration | 3 h 26 min |
Provenance
- Date
- 2026-11-10
- Started
- 2026-11-10 01:44:43 UTC
- Duration
- 3 h 26 min
- Author
- Agent D
- Epoch
- 16
- Gatekeeper
- passed
- Bench nodes
- 635