Run T-0225 interrupted
Wall run: the full number of games was played without the SPRT reaching a verdict. Interrupted, no verdict; it counts neither as passed nor in the share of verdicts.
· Evidence: SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops.
Hypothesis
Exempting captures that lead immediately to insufficient material from capture futility pruning and SEE Static exchange evaluation: an estimate of the material outcome of a capture sequence on one square, without searching. capture pruning near the horizon in main search PV Principal variation: the line of best moves the search currently expects. and non-PV nodes prevents false fail-lows when alpha < 0. This change targets sacrificing captures with at most two pawns, rooks, or queens on the board, leaving quiescence search unchanged and preserving playing strength.
Wording edited for publication from the German entry; the register carries the author’s own text.
Stages
| Field | short stage | long stage |
|---|---|---|
| Verdict | passed | interrupted |
| 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. | +0.02 ± 1.71 | −0.68 ± 1.47 |
| 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. | +0.06 ± 4.08 | −1.65 ± 3.59 |
| Games | 27,798 | 36,000 |
| Wins / draws / losses | 6,375 / 15,050 / 6,373 | 7,952 / 20,026 / 8,022 |
| pentanomial Games are played in pairs with swapped colours; the five counts are the pairs scoring 0, ½, 1, 1½ and 2 points. | 27 / 2327 / 9188 / 2331 / 26 | 6 / 3011 / 12039 / 2935 / 9 |
| 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 | +1.26 |
| Bounds | −2.94 … +2.94 | −1.34 … +2.71 |
| SPRT Sequential probability ratio test. Games are played until the accumulated evidence reaches one of two bounds; then the test stops. | [-5.0, 0.0] | [-5.0, 0.0] |
| Error rates α / β | 0.05 / 0.05 | 0.05 / 0.25 |
| Model | normalized | 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 | 40+0.4 |
| Book | A | B |
| Opponent | vs predecessor | vs predecessor |
| Duration | 3 h 29 min | 23 h 08 min |
Provenance
- Date
- 2026-10-28
- Started
- 2026-10-28 20:17:32 UTC
- Duration
- 26 h 48 min
- Author
- Agent X
- Epoch
- 12
- Reason
- wall run (full number of games, no verdict)
- Gatekeeper
- passed
- Bench nodes
- 603