Dual - chess engine
Author: DSTGU
Small improvements
Strategic results:
1647 ELO - 5 depth - 4 min 4 seconds
Dual 0.2.9 what's new?
Add:
Late Move Reduction
Futility Pruning
Reverse Futility Pruning
Fix:
Repetition detection
Generate quiescence moves only instead of filtering for them
Results of Dual-v0.2.9 vs Dual-v0.2.8-rc13 (5+0.08, NULL, NULL, chess.pgn):
Elo: 219.36 +/- 20.30, nElo: 300.38 +/- 21.53
LOS: 100.00 %, DrawRatio: 15.60 %, PairsRatio: 13.07
Games: 1000, Wins: 642, Losses: 83, Draws: 275, Points: 779.5 (77.95 %)
Ptnml(0-2): [5, 25, 78, 190, 202], WL/DD Ratio: 1.60
Rank Name Elo +/- nElo +/- Games Score Draw Ptnml(0-2)
1 Dual-v0.2.9 131.94 38.64 143.67 38.07 320 68.1% 28.7% [13, 9, 46, 33, 59]
2 Googleplex_Starthinker(2346) 129.45 41.25 131.67 38.07 320 67.8% 30.0% [17, 7, 48, 21, 67]
3 bikjump(2227) 39.25 39.08 38.73 38.07 320 55.6% 33.8% [31, 11, 54, 19, 45]
4 Maxwell(2008) -133.19 40.43 -138.95 38.07 320 31.7% 23.8% [63, 32, 38, 13, 14]
5 Dual-v0.2.8-rc13 -175.27 37.72 -209.81 38.07 320 26.7% 23.8% [65, 40, 38, 13, 4]
Startpos:
Eval: 19, Depth: 8, Seldepth: 18, nodes: 230857, time: 165ms, nps: 1399knps
PV: e2e4 b8c6 g1f3 g8f6 e4e5 f6g4 d2d4 d7d5
TT: hits:0, collisions:0, inserts:53419, overwrites:14639
Kiwipete:
Eval: -52, Depth: 7, Seldepth: 20, nodes: 60715, time: 42ms, nps: 1445knps
PV: e2a6 e6d5 e5g6 f7g6 c3b5 h3g2 f3g2
TT: hits:0, collisions:0, inserts:62656, overwrites:18842
Endgame pos
Eval: 39, Depth: 12, Seldepth: 18, nodes: 214364, time: 84ms, nps: 2551knps
PV: b4f4 h4g3 f4c4 h5c5 c4c5 d6c5 a5a6 g3g2 a6b7 g2f2 b7c7 f2e2
TT: hits:0, collisions:0, inserts:103550, overwrites:51727

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