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🔍 Improve TT replacement scheme: add required conditions for always replace #526

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merged 16 commits into from Dec 8, 2023

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@eduherminio eduherminio commented Dec 7, 2023

Exact || higher depth || different key 👍🏽

Score of Lynx-tt-replacement-scheme-2066-win-x64 vs Lynx 2063 - main: 3210 - 3014 - 4051  [0.510] 10275
...      Lynx-tt-replacement-scheme-2066-win-x64 playing White: 2170 - 936 - 2032  [0.620] 5138
...      Lynx-tt-replacement-scheme-2066-win-x64 playing Black: 1040 - 2078 - 2019  [0.399] 5137
...      White vs Black: 4248 - 1976 - 4051  [0.611] 10275
Elo difference: 6.6 +/- 5.2, LOS: 99.4 %, DrawRatio: 39.4 %
SPRT: llr 2.9 (100.4%), lbound -2.25, ubound 2.89 - H1 was accepted

Reduce TT entry size by only storing the 32 most significative bits of the key 👍🏽 [-5, 0]

Score of Lynx-tt-replacement-scheme-2070-win-x64-ageing vs Lynx-tt-replacement-scheme-2066-win-x64: 2276 - 2203 - 2755  [0.505] 7234
...      Lynx-tt-replacement-scheme-2070-win-x64-ageing playing White: 1490 - 738 - 1389  [0.604] 3617
...      Lynx-tt-replacement-scheme-2070-win-x64-ageing playing Black: 786 - 1465 - 1366  [0.406] 3617
...      White vs Black: 2955 - 1524 - 2755  [0.599] 7234
Elo difference: 3.5 +/- 6.3, LOS: 86.2 %, DrawRatio: 38.1 %
SPRT: llr 2.91 (100.6%), lbound -2.25, ubound 2.89 - H1 was accepted

Ageing impl, including the previous change (04ae2a1) 👎🏽

Score of Lynx-tt-replacement-scheme-2069-win-x64-ageing vs Lynx-tt-replacement-scheme-2066-win-x64: 899 - 973 - 1182  [0.488] 3054
...      Lynx-tt-replacement-scheme-2069-win-x64-ageing playing White: 600 - 328 - 599  [0.589] 1527
...      Lynx-tt-replacement-scheme-2069-win-x64-ageing playing Black: 299 - 645 - 583  [0.387] 1527
...      White vs Black: 1245 - 627 - 1182  [0.601] 3054
Elo difference: -8.4 +/- 9.6, LOS: 4.4 %, DrawRatio: 38.7 %
SPRT: llr -2.25 (-78.0%), lbound -2.25, ubound 2.89 - H0 was accepted

Ageing without shrinking the key 👎🏽

Score of Lynx-tt-replacement-scheme-2071-win-x64 vs Lynx-tt-replacement-scheme-2066-win-x64: 2621 - 2625 - 3414  [0.500] 8660
...      Lynx-tt-replacement-scheme-2071-win-x64 playing White: 1772 - 857 - 1701  [0.606] 4330
...      Lynx-tt-replacement-scheme-2071-win-x64 playing Black: 849 - 1768 - 1713  [0.394] 4330
...      White vs Black: 3540 - 1706 - 3414  [0.606] 8660
Elo difference: -0.2 +/- 5.7, LOS: 47.8 %, DrawRatio: 39.4 %
SPRT: llr -1.58 (-54.5%), lbound -2.25, ubound 2.89

Progress check 👍🏽

Score of Lynx-tt-replacement-scheme-2073-win-x64 vs Lynx 2063 - main: 258 - 235 - 337  [0.514] 830
...      Lynx-tt-replacement-scheme-2073-win-x64 playing White: 173 - 84 - 159  [0.607] 416
...      Lynx-tt-replacement-scheme-2073-win-x64 playing Black: 85 - 151 - 178  [0.420] 414
...      White vs Black: 324 - 169 - 337  [0.593] 830
Elo difference: 9.6 +/- 18.2, LOS: 85.0 %, DrawRatio: 40.6 %
SPRT: llr 0.413 (14.3%), lbound -2.25, ubound 2.89

Depth > depth >= entry.Depth + 2; 👎🏽

Score of Lynx-tt-replacement-scheme-2074-win-x64 vs Lynx-tt-replacement-scheme-2073-win-x64: 59 - 98 - 103  [0.425] 260
...      Lynx-tt-replacement-scheme-2074-win-x64 playing White: 41 - 41 - 49  [0.500] 131
...      Lynx-tt-replacement-scheme-2074-win-x64 playing Black: 18 - 57 - 54  [0.349] 129
...      White vs Black: 98 - 59 - 103  [0.575] 260
Elo difference: -52.5 +/- 33.0, LOS: 0.1 %, DrawRatio: 39.6 %
SPRT: llr -0.992 (-34.3%), lbound -2.25, ubound 2.89

Depth > depth >= entry.Depth + 3; 👎🏽

Score of Lynx-tt-replacement-scheme-2074-win-x64 vs Lynx-tt-replacement-scheme-2073-win-x64: 62 - 110 - 118  [0.417] 290
...      Lynx-tt-replacement-scheme-2074-win-x64 playing White: 42 - 34 - 69  [0.528] 145
...      Lynx-tt-replacement-scheme-2074-win-x64 playing Black: 20 - 76 - 49  [0.307] 145
...      White vs Black: 118 - 54 - 118  [0.610] 290
Elo difference: -58.0 +/- 31.0, LOS: 0.0 %, DrawRatio: 40.7 %
SPRT: llr -1.24 (-43.0%), lbound -2.25, ubound 2.89

Depth > depth >= entry.Depth + 1; 👎🏽

Score of Lynx-tt-replacement-scheme-2074-win-x64 vs Lynx-tt-replacement-scheme-2073-win-x64: 104 - 138 - 158  [0.458] 400
...      Lynx-tt-replacement-scheme-2074-win-x64 playing White: 68 - 46 - 87  [0.555] 201
...      Lynx-tt-replacement-scheme-2074-win-x64 playing Black: 36 - 92 - 71  [0.359] 199
...      White vs Black: 160 - 82 - 158  [0.598] 400
Elo difference: -29.6 +/- 26.5, LOS: 1.4 %, DrawRatio: 39.5 %
SPRT: llr -0.882 (-30.5%), lbound -2.25, ubound 2.89

Ageing + Depth > depth >= entry.Depth + 3; 👎🏽

Score of Lynx-tt-replacement-scheme-2077-win-x64 vs Lynx-tt-replacement-scheme-2073-win-x64: 62 - 102 - 116  [0.429] 280
...      Lynx-tt-replacement-scheme-2077-win-x64 playing White: 40 - 38 - 62  [0.507] 140
...      Lynx-tt-replacement-scheme-2077-win-x64 playing Black: 22 - 64 - 54  [0.350] 140
...      White vs Black: 104 - 60 - 116  [0.579] 280
Elo difference: -50.0 +/- 31.3, LOS: 0.1 %, DrawRatio: 41.4 %
SPRT: llr -1.05 (-36.4%), lbound -2.25, ubound 2.89

Ageing + Depth > depth >= entry.Depth + 2;

Score of Lynx-tt-replacement-scheme-2077-win-x64-mod vs Lynx-tt-replacement-scheme-2073-win-x64: 449 - 531 - 654  [0.475] 1634
...      Lynx-tt-replacement-scheme-2077-win-x64-mod playing White: 292 - 187 - 339  [0.564] 818
...      Lynx-tt-replacement-scheme-2077-win-x64-mod playing Black: 157 - 344 - 315  [0.385] 816
...      White vs Black: 636 - 344 - 654  [0.589] 1634
Elo difference: -17.5 +/- 13.0, LOS: 0.4 %, DrawRatio: 40.0 %
SPRT: llr -2.25 (-78.0%), lbound -2.25, ubound 2.89 - H0 was accepted

Ageing + Depth > depth >= entry.Depth + 1; 👎🏽

Score of Lynx-tt-replacement-scheme-2077-win-x64-mod vs Lynx-tt-replacement-scheme-2073-win-x64: 307 - 389 - 444  [0.464] 1140
...      Lynx-tt-replacement-scheme-2077-win-x64-mod playing White: 205 - 125 - 241  [0.570] 571
...      Lynx-tt-replacement-scheme-2077-win-x64-mod playing Black: 102 - 264 - 203  [0.358] 569
...      White vs Black: 469 - 227 - 444  [0.606] 1140
Elo difference: -25.0 +/- 15.8, LOS: 0.1 %, DrawRatio: 38.9 %
SPRT: llr -2.13 (-73.8%), lbound -2.25, ubound 2.89

@eduherminio eduherminio changed the title Improve TT replacement scheme 🔍 Improve TT replacement scheme: add required conditions for always replace Dec 8, 2023
@eduherminio eduherminio marked this pull request as ready for review December 8, 2023 22:37
@eduherminio eduherminio enabled auto-merge (squash) December 8, 2023 22:37
@eduherminio eduherminio merged commit 42b74b5 into main Dec 8, 2023
21 checks passed
@eduherminio eduherminio deleted the tt-replacement-scheme branch December 8, 2023 22:41
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