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Stockfish 2023091120 NNUE for Windows and Linux, compiled by Linmiao Xu (Elo +1.30)

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Stockfish 2023091120 - UCI chess engine, compiled by Michael Chaly
Rating CEDR=3725

Timestamp: 1695403576
Update NNUE architecture to SFNNv8: L1-2560 nn-ac1dbea57aa3.nnue

Creating this net involved:
- a 6-stage training process from scratch. The datasets used in stages 1-5 were fully minimized.
- permuting L1 weights with https://github.com/official-stockfish/nnue-pytorch/pull/254

A strong epoch after each training stage was chosen for the next. The 6 stages were:
```
1. 400 epochs, lambda 1.0, default LR and gamma
UHOx2-wIsRight-multinet-dfrc-n5000 (135G)
nodes5000pv2_UHO.binpack
data_pv-2_diff-100_nodes-5000.binpack
wrongIsRight_nodes5000pv2.binpack
multinet_pv-2_diff-100_nodes-5000.binpack
dfrc_n5000.binpack

2. 800 epochs, end-lambda 0.75, LR 4.375e-4, gamma 0.995, skip 12
LeelaFarseer-T78juntoaugT79marT80dec.binpack (141G)
T60T70wIsRightFarseerT60T74T75T76.binpack
test78-junjulaug2022-16tb7p.no-db.min.binpack
test79-mar2022-16tb7p.no-db.min.binpack
test80-dec2022-16tb7p.no-db.min.binpack

3. 800 epochs, end-lambda 0.725, LR 4.375e-4, gamma 0.995, skip 20
leela93-v1-dfrc99-v2-T78juntosepT80jan-v6dd-T78janfebT79aprT80aprmay.min.binpack
leela93-filt-v1.min.binpack
dfrc99-16tb7p-filt-v2.min.binpack
test78-juntosep2022-16tb7p-filter-v6-dd.min-mar2023.binpack
test80-jan2023-3of3-16tb7p-filter-v6-dd.min-mar2023.binpack
test78-janfeb2022-16tb7p.min.binpack
test79-apr2022-16tb7p.min.binpack
test80-apr2022-16tb7p.min.binpack
test80-may2022-16tb7p.min.binpack

4. 800 epochs, end-lambda 0.7, LR 4.375e-4, gamma 0.995, skip 24
leela96-dfrc99-v2-T78juntosepT79mayT80junsepnovjan-v6dd-T80mar23-v6-T60novdecT77decT78aprmayT79aprT80may23.min.binpack
leela96-filt-v2.min.binpack
dfrc99-16tb7p-filt-v2.min.binpack
test78-juntosep2022-16tb7p-filter-v6-dd.min-mar2023.binpack
test79-may2022-16tb7p.filter-v6-dd.min.binpack
test80-jun2022-16tb7p.filter-v6-dd.min.binpack
test80-sep2022-16tb7p.filter-v6-dd.min.binpack
test80-nov2022-16tb7p.filter-v6-dd.min.binpack
test80-jan2023-3of3-16tb7p-filter-v6-dd.min-mar2023.binpack
test80-mar2023-2tb7p.v6-sk16.min.binpack
test60-novdec2021-16tb7p.min.binpack
test77-dec2021-16tb7p.min.binpack
test78-aprmay2022-16tb7p.min.binpack
test79-apr2022-16tb7p.min.binpack
test80-may2023-2tb7p.min.binpack

5. 960 epochs, end-lambda 0.7, LR 4.375e-4, gamma 0.995, skip 28
Increased max-epoch to 960 near the end of the first 800 epochs
5af11540bbfe dataset: https://github.com/official-stockfish/Stockfish/pull/4635

6. 1000 epochs, end-lambda 0.7, LR 4.375e-4, gamma 0.995, skip 28
Increased max-epoch to 1000 near the end of the first 800 epochs
1ee1aba5ed dataset: https://github.com/official-stockfish/Stockfish/pull/4782
```

L1 weights permuted with:
```bash
python3 serialize.py $nnue $nnue_permuted \
--features=HalfKAv2_hm \
--ft_optimize \
--ft_optimize_data=/data/fishpack32.binpack \
--ft_optimize_count=10000
```

Speed measurements from 100 bench runs at depth 13 with profile-build x86-64-avx2:
```
sf_base = 1329051 +/- 2224 (95%)
sf_test = 1163344 +/- 2992 (95%)
diff = -165706 +/- 4913 (95%)
speedup = -12.46807% +/- 0.370% (95%)
```

Training data can be found at:
https://robotmoon.com/nnue-training-data/

Local elo at 25k nodes per move (vs. L1-2048 nn-1ee1aba5ed4c.nnue)
ep959 : 16.2 +/- 2.3

Failed 10+0.1 STC:
https://tests.stockfishchess.org/tests/view/6501beee2cd016da89abab21
LLR: -2.92 (-2.94,2.94) <0.00,2.00>
Total: 13184 W: 3285 L: 3535 D: 6364 Elo -6.59
Ptnml(0-2): 85, 1662, 3334, 1440, 71

Failed 180+1.8 VLTC:
https://tests.stockfishchess.org/tests/view/6505cf9a72620bc881ea908e
LLR: -2.94 (-2.94,2.94) <0.00,2.00>
Total: 64248 W: 16224 L: 16374 D: 31650 Elo -0.81
Ptnml(0-2): 26, 6788, 18640, 6650, 20

Passed 60+0.6 th 8 VLTC SMP (STC bounds):
https://tests.stockfishchess.org/tests/view/65084a4618698b74c2e541dc
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 90630 W: 23372 L: 23033 D: 44225 Elo +1.30
Ptnml(0-2): 13, 8490, 27968, 8833, 11

Passed 60+0.6 th 8 VLTC SMP:
https://tests.stockfishchess.org/tests/view/6501d45d2cd016da89abacdb
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 137804 W: 35764 L: 35276 D: 66764 Elo +1.23
Ptnml(0-2): 31, 13006, 42326, 13522, 17

closes https://github.com/official-stockfish/Stockfish/pull/4795

bench 1246812

Stockfish rating progress:
Engine Rating Score Games (%)
Stockfish 20230227 3732.4 92.00 134 68.66
Stockfish 241022 3724.2 64.00 112 57.14
Stockfish 031022 3720.9 110.50 158 69.94
Stockfish 070922 3718.9 123.00 164 75.00
Stockfish 20230325 3718.5 109.00 169 64.50
Stockfish 20221107 3717.8 106.50 186 57.26
Stockfish 20230308 Ivec 3717.6 79.00 120 65.83
Stockfish 301022 3717.6 112.00 175 64.00
Stockfish 20230218 3715.1 110.50 164 67.38
Stockfish 20230128 3713.1 69.00 106 65.09
Stockfish 290522 Ivec 3711.0 113.00 144 78.47
Stockfish 080622 Ivec 3709.7 94.50 133 71.05
Stockfish 161022 3709.5 147.00 240 61.25
Stockfish 20221123 3709.5 247.50 356 69.52
Stockfish dev-20230520 3708.9 106.50 174 61.21
Stockfish 20221224 3707.4 65.50 104 62.98
Stockfish dev-20230503 Ivec 3706.8 168.50 234 72.01
Stockfish 101022 Ivec 3705.6 82.50 138 59.78
Stockfish 20230308 3705.2 167.00 259 64.48
Stockfish 040722 3705.0 308.50 433 71.25
Stockfish 20230114 3704.6 295.00 410 71.95
Stockfish 20230314 3704.6 119.50 200 59.75
Stockfish 20221221 3703.6 165.00 267 61.80
Stockfish 061122 Ivec 3703.2 130.00 201 64.68
Stockfish 20230314 Ivec 3701.2 94.00 137 68.61
Stockfish dev-20230505 3700.7 97.50 172 56.69
Stockfish 20230104 3700.7 95.50 151 63.25
Stockfish 170922 Ivec 3700.2 107.50 155 69.35
Stockfish 130722 3698.9 102.50 166 61.75
Stockfish 20221120 3698.6 134.50 203 66.26
Stockfish 20230125 3698.5 136.50 201 67.91
Stockfish 110722 Ivec 3698.3 105.50 134 78.73
StockfishMZ 170522 3697.7 345.00 482 71.58
Stockfish 20230101 3697.5 74.00 119 62.18
Stockfish 070622 3697.1 279.00 462 60.39
Stockfish 060822 Ivec 3696.4 96.50 153 63.07
Stockfish 081022 3696.1 89.50 176 50.85
Stockfish dev-20230503 3692.7 78.50 110 71.36
Stockfish 15 3691.1 1038.00 1623 63.96
Stockfish 20221209 3690.4 122.50 192 63.80
Stockfish 030522 3689.6 101.50 150 67.67
Stockfish 20230329 3688.5 75.00 132 56.82
Stockfish 20230202 3687.0 86.00 128 67.19
Stockfish 20221220 3684.4 61.00 107 57.01
Stockfish 20230313 3683.6 82.50 104 79.33
Stockfish 170922 3678.1 150.00 226 66.37
StockfishMZ Iccf 240522 3637.8 100.50 150 67.00

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