1.g4 opening is losing?

[Uri Blass]

something seems to go wrong in game that I tried to play stockfish depth 24 against depth 27 with g4 as first move.

For some reason stockfish get stuck at move 38 and refuse to move.
I do not know if the problem is huge branching factor or a different problem.

Hash is 4096 mbytes per player.
banksia gui does not show me anlaysis during the game and I do not know if there is an option to see it in the gui.

I am going to check it at console mode.

[pgn][Event "banksia game"]
[Date "2022.04.18"]
[White "Stockfish 160422 dup"]
[Black "Stockfish 160422"]
[Result "*"]
[TimeControl "depth: 27;depth: 24"]
[Time "11:18:30"]
[Termination "*"]

1. g4 {End of opening} d5 {-1.34/24 6041 4914624} 2. e3 {-1.26/27 15769 17536433} Nc6 {-1.37/24 5232 5826850}
3. d4 {-1.27/27 15542 16957471} e5 {-1.65/24 5228 5760626} 4. Nc3 {-1.31/27 5421 6079237} Be6 {-1.49/24 2696 2994005}
5. dxe5 {-1.27/27 16929 18225268} Nxe5 {-1.60/24 4948 5457070} 6. Be2 {-1.50/27 17215 18690432} a6 {-1.49/24 7337 7984413}
7. h3 {-1.52/27 8758 9786096} h5 {-1.57/24 3401 3722175} 8. Nf3 {-1.65/27 11258 12404428} Nxf3+ {-1.69/24 2418 2739407}
9. Bxf3 {-1.70/27 4676 5405569} hxg4 {-1.55/24 1041 1174801} 10. Bxg4 {-1.62/27 7610 8832113} Qg5 {-1.48/24 1261 1456467}
11. Bxe6 {-1.51/27 6002 7068575} fxe6 {-1.67/24 3259 3808406} 12. Qf3 {-1.58/27 7388 8680281} Qg6 {-1.63/24 3427 4029741}
13. e4 {-1.62/27 6990 8377685} Nf6 {-1.69/24 2599 3071809} 14. Bd2 {-1.48/27 5213 6362137} O-O-O {-1.90/24 3343 4081289}
15. O-O-O {-1.61/27 4432 5451885} d4 {-1.63/24 2044 2598840} 16. Rhg1 {-1.48/27 3142 3918479} Qh7 {-1.73/24 2214 2694021}
17. Ne2 {-1.45/27 5998 7242916} Qxe4 {-1.52/24 1973 2341423} 18. Qxe4 {-1.58/27 7406 9038705} Nxe4 {-1.68/24 1483 1841417}
19. Be1 {-1.51/27 3467 4307931} c5 {-1.68/24 3574 4399013} 20. h4 {-1.30/27 4312 5192986} Re8 {-1.66/24 3485 4283919}
21. b4 {-1.42/27 6473 7794527} e5 {-1.73/24 3350 4008528} 22. f4 {-1.55/27 7371 8948472} cxb4 {-1.59/24 4751 5638767}
23. fxe5 {-1.57/27 8295 10013142} Nc3 {-1.52/24 4029 4939992} 24. Nxc3 {-1.43/27 3991 4872107} dxc3 {-1.75/24 2139 2640144}
25. a3 {-1.53/27 3947 5028118} bxa3 {-1.75/24 2704 3319114} 26. Bxc3 {-2.01/27 19374 23265466} Rxh4 {-2.02/24 5878 7136851}
27. Kb1 {-1.97/27 16844 20632072} Rc4 {-2.20/24 4368 5509384} 28. Rd3 {-2.33/27 13574 17079007} b5 {-2.31/24 4876 6448353}
29. Ba5 {-2.65/27 16932 21358644} a2+ {-2.96/24 7200 9750982} 30. Ka1 {-2.97/27 10403 13342732} Rxc2 {-3.12/24 3465 5004865}
31. Rg4 {-4.00/27 8377 11262401} Bc5 {-4.62/24 4881 6914404} 32. Rc3 {-4.77/27 6300 8658448} Rxc3 {-5.48/24 9832 14781251}
33. Bxc3 {-5.72/27 5436 7804216} b4 {-5.67/24 5560 8646136} 34. Bb2 {-4.77/27 10469 15756430} Kd7 {-5.91/24 13554 20845521}
35. Kxa2 {-5.57/27 7277 11172826} Kc6 {-6.72/24 19744 29957299} 36. Rxg7 {-5.83/27 6953 11066262} Kb5 {-6.97/24 22654 34854077}
37. Kb3 {-4.18/27 1347 2107837} Be7 {-7.62/24 30645 48463618}[/pgn]

[Uri Blass]

I guess that the problem is maybe a huge branching factor of stockfish

Stockfish get a fail low at depth 27 and cannot solve it for a very long time and I guess it has a branching factor of more than 100 or crash.

Can other copy the pgn and ask stockfish to play at depth 27 to find what happens?

I guess I may need depth 24 single core against some time control tests to prove that it is possible to beat depth 24.

This is the analysis that I get with stockfish single core 4096 mbytes no tablebases.

FEN: 4r3/4b1R1/p7/1k2P3/1p6/1K6/1B6/8 w - - 3 38

Stockfish_22041608_x64_avx2:
NNUE evaluation using nn-6877cd24400e.nnue enabled
1/1 00:00 19 19k -0.74 Rg7-f7
2/2 00:00 39 39k -0.82 Rg7-f7 a6-a5
3/3 00:00 103 103k -1.73 Rg7-f7 a6-a5 Rf7-f1
4/5 00:00 508 508k -1.90 Rg7-g1 Re8-h8 Rg1-a1
5/6 00:00 1k 742k -2.81 Rg7-g2 a6-a5 Rg2-e2 a5-a4+ Kb3-a2 Be7-c5
6/7 00:00 3k 897k -2.37 Bb2-d4 a6-a5 Kb3-b2 a5-a4 e5-e6
7/10 00:00 6k 1,061k -3.00 Bb2-d4 a6-a5 Kb3-b2 a5-a4 e5-e6 Kb5-c4 Bd4-e5 a4-a3+ Kb2-a2
8/10 00:00 7k 1,175k -2.24 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Rg7-g4
9/12 00:00 15k 1,289k -2.11 Bb2-d4 a6-a5 Bd4-g1 a5-a4+ Kb3-b2 b4-b3 Rg7-g4
10/13 00:00 26k 1,230k -2.73 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-e3 b4-b3 Rg7-g6 Be7-b4 Rg6-b6+ Kb5-c4 Rb6-c6+ Kc4-d3
11/15 00:00 42k 1,115k -2.75 Bb2-d4 a6-a5 Bd4-e3 a5-a4+ Kb3-b2 Be7-f8 Rg7-g5 Re8-e6 Rg5-f5 Bf8-g7 Be3-d4 Kb5-c4
12/19 00:00 77k 1,121k -2.97 Bb2-d4 a6-a5 Bd4-e3 Re8-c8 Be3-d4 a5-a4+ Kb3-b2 Rc8-e8 Bd4-e3 Be7-f8 Rg7-g5 Re8-e6 Rg5-f5 Bf8-e7
13/21 00:00 248k 1,256k -3.50 Bb2-d4 a6-a5 Bd4-g1 a5-a4+ Kb3-a2 Kb5-c4 Rg7-g4+ Kc4-d5 Ka2-b1 Kd5xe5 Rg4-g2 Ke5-d5 Rg2-e2
14/23 00:00 735k 1,346k -4.00 Bb2-d4 a6-a5 Bd4-e3 a5-a4+ Kb3-a2 Be7-f8 Rg7-g5 Re8-e6 Be3-d4 b4-b3+ Ka2-a1 Bf8-b4 Bd4-b2 a4-a3 Rg5-g3
15/28 00:00 1,284k 1,358k -4.15 e5-e6 a6-a5 Kb3-c2 a5-a4 Rg7-g1 Re8-c8+ Kc2-b1 a4-a3 Rg1-g7 Rc8-e8 Bb2-d4 b4-b3 Rg7-g3 Kb5-c4 Rg3-g4 Kc4-d5 Bd4-b2 a3xb2 Rg4-f4 Re8-b8 Rf4-f2 Kd5xe6 Rf2-e2+ Ke6-f7
16/30 00:01 1,983k 1,387k -4.31 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-d4 Kb5-c4 Rg7-g4 Re8-c8 Kc2-b1 Kc4-d5 Bd4-f6 Be7xf6 Rg4xb4 Rc8-c4 Rb4-b7 Kd5xe6 Rb7-b6+ Ke6-f5 Rb6-a6 Bf6-e5 Ra6-a7 Kf5-e6 Ra7-a6+ Ke6-d5
17/27 00:02 3,222k 1,405k -4.25 Bb2-d4 a6-a5 Kb3-a2 a5-a4 Bd4-a7 Kb5-c4 Rg7-f7 b4-b3+ Ka2-b1 a4-a3 Rf7-f4+ Kc4-d5 Rf4-d4+ Kd5-e6 Rd4-d3 Re8-a8 Rd3xb3 Ra8xa7 Rb3-b5 Ra7-a4 Rb5-b6+ Ke6xe5
18/29- 00:03 4,659k 1,423k -4.87 Bb2-d4 a6-a5
18/32 00:04 6,696k 1,429k -5.01 Kb3-c2 a6-a5 Kc2-d3 a5-a4 Rg7-f7 a4-a3 Bb2-a1 Kb5-a4 Rf7-h7 Ka4-b3 Rh7-h1 Be7-c5 Rh1-e1 Re8-d8+ Kd3-e4 Bc5-e7 e5-e6
19/28- 00:05 8,548k 1,440k -5.26 Kb3-c2 a6-a5
19/35+ 00:07 10,447k 1,445k -4.92 Bb2-d4
19/35 00:07 11,210k 1,445k -4.85 Bb2-d4 a6-a5 Kb3-c2 a5-a4 e5-e6 Kb5-c4 Rg7-g4 Re8-c8 Rg4-f4 Rc8-c6 Bd4-g7+ Kc4-b5+ Kc2-d3 Rc6xe6 Rf4-f5+ Be7-c5 Bg7-d4 Re6-c6 Bd4-f2 Rc6-c8 Kd3-c2 Kb5-b6
20/28- 00:08 12,564k 1,449k -5.24 Bb2-d4 a6-a5
20/34 00:10 14,775k 1,460k -5.31 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-d3 Re8-b8 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b4 Be5-h8 Be7-c5 Rf3-c3 Rb4-b8 Rc3xc5 Rb8xh8
21/36 00:11 17,299k 1,470k -5.57 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-c5 Rg4-g3 Re8-b8 Ba1-g7 Kc5-c4 Rg3-c3+ Kc4-d5 Rc3-d3+ Kd5xe6 Bg7-d4 Rb8-d8 Rd3xb3 Rd8xd4 Rb3-e3+ Ke6-f7 Re3-e2 Rd4-f4 Kb1-a2 Rf4-f1 Re2-c2
22/43+ 00:12 18,177k 1,471k -5.06 Bb2-d4
22/43 00:14 21,596k 1,481k -5.71 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Bd4-b2 Be7-d6 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-e4+ Ke6-d7 Re4xe8 Kd7xe8 Bb2-d4 b4-b3+ Kc2-c3 Ke8-f7 Kc3-c4 Kf7-e6 Bd4-b2 Bd6-e7 Bb2-c1 Be7-f8 Bc1-b2 Bf8-d6 Bb2-c1 Ke6-e5 Kc4-d3 Ke5-d5 Bc1-b2
23/42- 00:19 28,751k 1,490k -5.94 Bb2-d4 a6-a5
23/43 00:19 29,262k 1,490k -5.94 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Rg7-g4 Re8-c8 Rg4-f4 Rc8-c6 Bd4-g7+ Kc4-b5+ Kc2-d3 a4-a3 Rf4-e4 Rc6-c1 Re4-e5+ Kb5-a4 Re5-e4 Ka4-b3 Re4-e2 Rc1-c6 Re2-e3 Rc6-d6+ Kd3-e4+ Kb3-c4 Ke4-f5 Rd6-d5+ Kf5-f4 Rd5-d1 Re3-e4+ Kc4-d5 Re4-e5+ Kd5-d6
24/43 00:24 37,467k 1,503k -6.03 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Rg7-g4 Re8-c8 Rg4-f4 Rc8-c6 Bd4-g7+ Kc4-b5+ Kc2-d3 a4-a3 Rf4-e4 Rc6-c1 Re4-e5+ Kb5-a4 Re5-e4 Ka4-b3 Re4-e2 a3-a2 Re2-b2+ Kb3-a3 Rb2-h2 Rc1-e1 Kd3-c4 Re1xe6 Bg7-b2+ Ka3-a4 Bb2-a1 b4-b3 Rh2-h7 Be7-b4 Rh7-a7+ Bb4-a5
25/36- 00:32 48,298k 1,509k -6.44 Bb2-d4 a6-a5
25/40 00:33 50,150k 1,509k -6.23 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Rg7-g4 Kc4-d5 Bd4-a1 Re8-c8+ Kc2-d3 a4-a3 Rg4-d4+ Kd5xe6 Rd4-c4 Rc8-b8 Rc4-e4+ Ke6-d7 Ba1-e5 Rb8-b7 Kd3-c2 b4-b3+ Kc2-b1 Rb7-b4 Re4-e3 Be7-c5 Re3-d3+ Kd7-c6 Be5-a1 Kc6-b5 Ba1-b2 Kb5-a4 Rd3-d5 Rb4-c4 Rd5-d8
26/42- 00:42 64,809k 1,516k -6.75 Bb2-d4 a6-a5
26/48- 00:53 82,155k 1,526k -7.25 Bb2-d4 a6-a5
26/52+ 00:57 87,745k 1,528k -6.75 Bb2-d4
26/52 01:12 110,137k 1,529k -7.10 Kb3-c2 a6-a5 Kc2-d3 a5-a4 e5-e6 a4-a3 Bb2-d4 b4-b3 Rg7-f7 Kb5-a4 Bd4-c3 Re8-d8+ Kd3-e2 b3-b2 Rf7xe7 Rd8-b8 Bc3-e5 b2-b1Q Re7-a7+ Ka4-b3 Be5xb8 Qb1-e4+ Ke2-f1 Qe4xe6 Ra7-b7+ Kb3-c4 Rb7-c7+ Kc4-d5 Rc7-a7 Qe6-f6+ Kf1-g2 Qf6-b2+ Kg2-h3 Qb2-b4 Ra7-a6
27/46- 01:24 130,120k 1,534k -7.70 Kb3-c2 a6-a5

[Uri Blass]

analysis only from position without game show a huge branching factor at depth 25.

FEN: 4r3/4b1R1/p7/1k2P3/1p6/1K6/1B6/8 w - - 0 38

Stockfish_22041608_x64_avx2:
NNUE evaluation using nn-6877cd24400e.nnue enabled
1/1 00:00 19 19k -0.75 Rg7-f7
2/2 00:00 42 42k -0.82 Rg7-f7 a6-a5
3/3 00:00 104 104k -1.73 Rg7-f7 a6-a5 Rf7-f1
4/5 00:00 607 607k -2.52 Kb3-c2 a6-a5 Kc2-d3 Be7-c5
5/6 00:00 1k 678k -3.07 Kb3-c2 a6-a5 Kc2-d3 a5-a4 e5-e6 Be7-c5
6/7 00:00 2k 693k -2.39 Rg7-h7 a6-a5 Kb3-c2 Be7-c5 Rh7-b7+ Kb5-a6
7/10 00:00 7k 952k -2.50 Kb3-a2 a6-a5 Rg7-g4 Be7-c5 Rg4-e4 a5-a4 Bb2-c1
8/15 00:00 22k 1,002k -2.93 Bb2-d4 a6-a5 Kb3-c2 a5-a4 Kc2-b2 Kb5-c4 Rg7-g4 a4-a3+ Kb2-a1
9/13 00:00 26k 1,022k -2.37 Bb2-d4 a6-a5 Kb3-b2 Re8-d8 e5-e6 Rd8xd4 Rg7xe7 Rd4-d2+ Kb2-c1
10/14 00:00 46k 1,031k -3.15 Bb2-d4 a6-a5 Kb3-b2 Re8-d8 Rg7-g4 Rd8-h8 Rg4-g7 Rh8-h2+ Kb2-b1 Rh2-d2
11/14 00:00 57k 1,031k -2.72 Kb3-a2 a6-a5 Bb2-d4 a5-a4 Bd4-e3 b4-b3+ Ka2-b2 Be7-b4 Rg7-b7+ Kb5-c4 Rb7-c7+ Kc4-d5 Rc7-a7
12/20 00:00 77k 1,053k -2.81 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-e3 Be7-f8 Rg7-g5 Kb5-c4 Rg5-g4+ Kc4-d5 Be3-d2 Re8-b8 Kb2-a2 Bf8-c5
13/21 00:00 371k 1,257k -3.73 Bb2-d4 a6-a5 Bd4-g1 a5-a4+ Kb3-a2 Kb5-c4 Rg7-g4+ Kc4-d5 Bg1-f2 Re8-c8 Bf2-h4 b4-b3+ Ka2-b1 Be7-a3 Bh4-g5 Rc8-a8 Bg5-f6 Ba3-c5
14/24 00:00 668k 1,313k -3.95 e5-e6 a6-a5 Bb2-c1 a5-a4+ Kb3-c2 Be7-c5 Rg7-g6 a4-a3 Kc2-b3 Re8-d8 Rg6-g5 Rd8-d3+ Kb3-a2 b4-b3+ Ka2-b1 Rd3-d1 e6-e7
15/26 00:00 936k 1,333k -3.98 e5-e6 a6-a5 Bb2-c1 a5-a4+ Kb3-c2 Be7-c5 Rg7-g6 a4-a3 Kc2-b3 Re8-f8 Rg6-g5 Rf8-f3+ Kb3-c2 b4-b3+ Kc2-d2 b3-b2 Bc1xb2 Rf3-f2+ Kd2-c3 Rf2xb2 e6-e7 Rb2-e2
16/31 00:01 1,470k 1,357k -3.92 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-c1 Be7-c5 Rg7-g6 a4-a3 Kc2-b3 Re8-d8 Rg6-g5 Rd8-d3+ Kb3-c2 Rd3-c3+ Kc2-b1 Kb5-a4 Bc1-d2 Rc3-b3+ Kb1-c2 Rb3-b2+ Kc2-c1
17/30 00:01 2,209k 1,384k -4.35 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-c1 Be7-c5 Rg7-g6 a4-a3 Kc2-b3 Re8-f8 Rg6-g5 Rf8-f3+ Kb3-c2 Rf3-c3+ Kc2-b1 Kb5-a4 Bc1-d2 Rc3-b3+ Kb1-c2 Rb3-b2+ Kc2-c1 Rb2xd2 Kc1xd2 a3-a2 Rg5-g8 Ka4-b3 Rg8-a8 Kb3-b2 Kd2-d3 a2-a1Q Ra8xa1 Kb2xa1
18/34+ 00:03 4,699k 1,418k -4.05 Bb2-d4
18/34 00:03 5,320k 1,416k -4.62 Kb3-c2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5-e6 Bg1-e3 Re8-c8+ Kc2-b1 Ke6xe5 Rd4-d1 Rc8-c4 Rd1-d7 Be7-d6 Rd7-a7 a4-a3 Ra7-a5+ Ke5-e4
19/28- 00:04 6,281k 1,423k -4.94 Kb3-c2 a6-a5
19/30- 00:06 8,640k 1,436k -5.25 Kb3-c2 a6-a5
19/34+ 00:07 10,604k 1,440k -4.94 Kb3-c2
19/34 00:08 12,272k 1,442k -4.50 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-d4 Kb5-c4 Bd4-a1 Kc4-d5 Rg7-g1 Re8-c8+ Kc2-d3 a4-a3 Rg1-h1 b4-b3 Rh1-h5+ Kd5xe6 Rh5-b5 Rc8-c1 Ba1-c3 Rc1-b1 Kd3-c4
20/33+ 00:08 12,684k 1,445k -4.40 e5-e6
20/33- 00:09 13,431k 1,448k -5.03 e5-e6 a6-a5
20/36 00:10 14,815k 1,455k -4.95 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-d4 Kb5-c4 Bd4-a1 Kc4-d5 Rg7-g1 Re8-c8+ Kc2-d3 b4-b3 Rg1-h1 Rc8-g8 Rh1-h5+ Rg8-g5 Rh5xg5+ Be7xg5 Ba1-b2 Kd5xe6 Kd3-c4 Bg5-e7 Bb2-c1 Ke6-e5 Bc1-b2+ Ke5-f5 Kc4-c3 Kf5-e6 Kc3-c4 Be7-d6 Bb2-c1 Ke6-d7 Kc4-c3
21/34- 00:11 16,729k 1,460k -5.25 e5-e6 a6-a5
21/34- 00:12 18,708k 1,471k -5.59 e5-e6 a6-a5
21/34 00:13 19,475k 1,473k -5.48 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-d4 Kb5-c4 Bd4-b2 Kc4-d5 Bb2-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g3 Re8-b8 Ba1-b2 a3xb2 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-c3 Be7-f6 Rc3-c7+ Kf7-e6 Rc7-c8 Rb8-b4 Rc8-c6+ Ke6-e7 Rc6-c4 Rb4-b6
22/36- 00:16 24,104k 1,482k -5.87 e5-e6 a6-a5
22/36 00:20 30,029k 1,490k -5.92 Kb3-c2 a6-a5 Kc2-d3 a5-a4 Bb2-d4 a4-a3 e5-e6 b4-b3 Bd4-e5 Kb5-c6 Kd3-c3 Kc6-d5 Be5-f4 a3-a2 Rg7-g1 a2-a1R Rg1xa1 Be7-f6+ Kc3xb3 Bf6xa1 Bf4-e3
23/36 00:24 36,514k 1,496k -6.29 Kb3-c2 a6-a5 Bb2-d4 a5-a4 e5-e6 Kb5-c4 Bd4-b2 Kc4-d5 Rg7-f7 Kd5xe6 Rf7-f1 Re8-b8 Rf1-e1+ Ke6-d7 Bb2-d4 b4-b3+ Kc2-b2 a4-a3+ Kb2-a1 Be7-b4 Re1-c1 Bb4-d6 Rc1-e1
24/27- 00:31 47,840k 1,502k -6.63 Kb3-c2 a6-a5
24/42 00:37 56,798k 1,511k -6.65 Kb3-c2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5-e6 Bg1-e3 Re8-c8+ Kc2-b1 Rc8-f8 Be3-d2 Ke6xe5 Rd4-d3 Rf8-f1+ Kb1-c2 Be7-c5 Rd3-d7 b4-b3+ Kc2-c3 Ke5-e6 Rd7-d8 Bc5-d6 Rd8-a8 Bd6-e5+ Kc3-d3 b3-b2 Ra8-a6+ Ke6-f5
25/33- 00:49 74,775k 1,517k -7.13 Kb3-c2 a6-a5
25/39- 01:05 99,122k 1,522k -7.68 Kb3-c2 a6-a5
25/43+ 53:28 3,853,976k 1,201k -7.13 Kb3-c2
25/44+ 1:09:49 5,065,083k 1,209k -6.26 Rg7-h7
25/44 1:09:50 5,067,071k 1,209k -6.86 Rg7-h7 a6-a5 Kb3-c2 a5-a4 Kc2-d3 a4-a3 Bb2-a1 Be7-c5 Rh7-b7+ Kb5-c6 Rb7-f7 b4-b3 Rf7-f1 Re8-b8 Rf1-b1 Kc6-d5 e5-e6 Bc5-e7 Ba1-g7 Rb8-g8 Rb1xb3 Rg8xg7 Rb3-b5+ Kd5xe6 Rb5-a5 Rg7-g1 Kd3-c4 Rg1-g2 Ra5-a8 Rg2-g4+ Kc4-c3
26/40+ 1:09:55 5,072,668k 1,209k -6.21 Kb3-c2
26/40- 1:10:02 5,083,624k 1,210k -7.36 Kb3-c2 a6-a5
26/47+ 1:10:14 5,100,174k 1,210k -6.49 Kb3-a2
26/47 1:10:22 5,113,010k 1,211k -7.68 Kb3-a2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Bg1-f2 Re8-h8 Rg4-d4+ Kd5-e6 Bf2-g3 Rh8-h3 Rd4-d3 Rh3-h1 Rd3-d2 Rh1-g1 Bg3-f2 Rg1-g2 Ka2-b1 b4-b3
27/40 1:10:38 5,136,996k 1,212k -7.69 Kb3-a2 a6-a5 Bb2-d4 a5-a4 Bd4-a7 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe5 Rd4-d2 Re8-c8 Ba7-e3 Rc8-c4 Rd2-d7 Ke5-e6 Rd7-a7 Rc4-c2+ Ka2-b1 Rc2-e2 Be3-c1 a4-a3 Ra7-a5 Re2-e1 Kb1-c2 b4-b3+ Kc2-c3 Re1xc1+ Kc3xb3 Rc1-b1+ Kb3-c4 Rb1-b2 Ra5-a6+ Be7-d6 Ra6-a5 Bd6-b4 Ra5-a8 Ke6-d7 Ra8-a6
28/40 1:10:58 5,168,129k 1,214k -7.75 Kb3-c2 a6-a5 Bb2-d4 a5-a4 e5-e6 Kb5-c4 Bd4-b2 Kc4-d5 Rg7-f7 Kd5xe6 Rf7-f1 Re8-b8 Bb2-c1 Rb8-f8 Rf1-e1+ Ke6-d7 Kc2-d3 Rf8-c8 Bc1-b2 a4-a3 Bb2-g7 Be7-d6 Re1-h1 Rc8-b8 Kd3-c4 b4-b3 Kc4-c3 Kd7-c6 Rh1-d1 Bd6-e7 Bg7-d4 Be7-c5 Bd4xc5
29/52- 1:11:42 5,235,657k 1,217k -8.44 Kb3-c2 a6-a5

[Uri Blass]

I could prove in the third try that 1.g4 can draw against depth 24 of stockfish.
I guess it can even win against depth 24.

time control for the white side was 20+10

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2022.04.18"]
[Round "1"]
[White "Stockfish 160422 dup"]
[Black "Stockfish 160422"]
[Result "1/2-1/2"]
[TimeControl "180+2;900+10"]
[Time "17:00:47"]
[Board "1"]
[Termination "repetition"]

1. g4 {End of opening} d5 {-1.34/24 5793 4914624} 2. e3 {-1.25/35 90610 99831060} Nc6 {-1.37/24 5227 5826850}
3. d4 {-1.28/31 25944 27988199} e5 {-1.65/24 5217 5760626} 4. Nc3 {-1.11/28 17759 19355497} Be6 {-1.49/24 2672 2994005}
5. dxe5 {-1.28/31 61167 64376568} Nxe5 {-1.60/24 4973 5457070} 6. Be2 {-1.41/29 20368 22235332} a6 {-1.49/24 7362 7984413}
7. h3 {-1.54/33 69787 74288908} h5 {-1.57/24 3464 3722175} 8. Nf3 {-1.69/32 31944 34736762} Nxf3+ {-1.69/24 2418 2739407}
9. Bxf3 {-1.61/34 24130 26349352} hxg4 {-1.55/24 1060 1174801} 10. Bxg4 {-1.42/36 30443 34071327} Qg5 {-1.48/24 1267 1456467}
11. Bxe6 {-1.59/36 39161 45299055} fxe6 {-1.67/24 3328 3808406} 12. Qd3 {-1.68/37 66078 74736416} Qg2 {-1.83/24 4949 5451040}
13. Qf1 {-1.81/37 23991 27419880} Qf3 {-1.70/24 3175 3707530} 14. Bd2 {-1.87/37 26023 30115345} Nf6 {-1.92/24 1228 1461000}
15. Rg1 {-1.82/37 24252 28525976} Qxh3 {-1.92/24 3996 4637903} 16. Qxh3 {-1.77/39 24815 29164072} Rxh3 {-1.81/24 2380 2790365}
17. Ke2 {-1.67/38 26329 31454043} Kf7 {-1.78/24 1369 1610197} 18. Rg2 {-1.70/34 25356 30029976} Rh7 {-1.85/24 3471 4091205}
19. Rag1 {-1.75/33 37697 44085194} Be7 {-1.81/24 2471 2944733} 20. a4 {-1.73/37 156811 178827877} Nd7 {-1.80/24 5954 7008147}
21. e4 {-1.61/33 41807 48129321} c6 {-1.85/24 4173 4896410} 22. Bg5 {-1.43/34 16813 20228796} Bf6 {-1.74/24 3535 4184337}
23. a5 {-1.64/36 36422 42812603} Rah8 {-1.75/24 1627 1990983} 24. Na4 {-1.61/35 24964 29731787} Be5 {-1.59/24 2629 3220150}
25. exd5 {-1.49/36 19492 23736507} cxd5 {-1.56/24 3448 3993600} 26. Rg4 {-1.67/34 21526 25161283} Bh2 {-1.65/24 1979 2374288}
27. Rd1 {-1.51/34 26600 31506185} Rh5 {-1.76/24 2351 2823007} 28. Be3 {-1.45/37 63378 74149162} Bd6 {-1.50/24 2975 3439492}
29. Rdg1 {-1.37/36 24320 28954229} R8h7 {-1.54/24 1893 2356177} 30. c3 {-1.51/34 24231 28983974} Rh4 {-1.42/24 3029 3406879}
31. Rxh4 {-1.51/33 20765 24745559} Rxh4 {-1.37/24 1974 2341629} 32. b4 {-1.49/35 20321 25334863} Be5 {-1.49/24 3015 3659799}
33. Rb1 {-1.22/33 20741 26505233} Rc4 {-1.41/24 2250 2687197} 34. Bd2 {-1.22/34 31521 39119193} Re4+ {-1.38/24 1486 1837563}
35. Be3 {-1.31/38 20739 26248651} Rc4 {-1.31/24 1527 1876557} 36. Bd2 {-1.18/34 24112 30083695} Rc7 {-1.22/24 4459 5427850}
37. Kd3 {-1.21/35 24821 29661930} Bf6 {-1.22/24 2889 3398201} 38. f4 {-1.27/35 17999 22078310} Kg6 {-1.34/24 1429 1707783}
39. Rh1 {-1.18/37 45067 53623325} Rc4 {-1.26/24 2267 2682398} 40. Nb2 {-1.20/38 53461 64665805} Rc8 {-1.19/24 1126 1322976}
41. Na4 {-1.36/37 21670 26994263} Rc4 {-1.20/24 853 1055420} 42. Rh2 {-1.44/38 68840 83111435} Kf7 {-1.49/24 5781 6786819}
43. Kc2 {-1.22/35 14384 17416353} Kg6 {-1.40/24 3707 4341167} 44. Kb3 {-1.19/36 24745 29949494} Kf5 {-1.33/24 1446 1721146}
45. Rh5+ {-1.19/39 11309 13882071} Kg4 {-1.38/24 1109 1299349} 46. Rh2 {-1.37/41 85791 100269280} Rc8 {-1.43/24 3039 3473882}
47. Rh1 {-1.37/31 3191 4259276} Rc7 {-1.30/24 430 518113} 48. Nb2 {-1.30/36 9330 12200930} Kf3 {-1.34/24 2478 2899990}
49. Rh3+ {-1.20/35 4063 5306285} Kg4 {-1.29/24 846 1003148} 50. Rh1 {-1.19/39 6347 7689307} Rc6 {-1.34/24 1468 1709217}
51. Na4 {-1.22/36 8988 10908059} Kf5 {-1.46/24 738 904094} 52. Rh5+ {-1.21/37 5272 6616324} Kg6 {-1.40/24 166 203541}
53. Rh1 {-1.19/41 5776 7434567} Rc4 {-1.40/24 193 242260} 54. Nb2 {-1.19/38 6888 8469137} Rc8 {-1.28/24 259 314122}
55. Re1 {-1.19/36 10459 12436947} Kf5 {-1.23/24 4352 5060036} 56. Nd1 {-0.70/28 7928 9642752} Bh4 {-0.88/24 4370 4966032}
57. Rh1 {-0.88/33 34048 39312814} Bf6 {-0.89/24 970 1163120} 58. Re1 {-0.96/30 2873 3681386} e5 {-0.82/24 1047 1302213}
59. Ne3+ {-0.66/27 5109 6180799} Ke6 {-0.77/24 1638 1923804} 60. f5+ {-0.43/36 5855 7235226} Kd6 {-0.37/24 2409 2893514}
61. Rd1 {-0.32/35 10920 13350623} d4 {-0.50/24 351 430658} 62. Be1 {-0.28/35 7285 9430280} b5 {-0.45/24 298 386454}
63. cxd4 {-0.27/38 8426 12170626} exd4 {-0.53/24 156 215544} 64. Bg3+ {-0.20/37 8162 12072344} Kc6 {-0.47/24 104 136010}
65. Rc1+ {-0.14/39 6963 11441987} Kb7 {-0.46/24 235 379781} 66. Rxc8 {-0.11/41 8261 12265870} Kxc8 {-0.46/24 99 151392}
67. Nd5 {-0.11/46 7417 11598997} d3 {-0.45/24 137 210071} 68. Nxf6 {-0.10/45 7663 15326047} Nxf6 {-0.52/24 221 409399}
69. Be5 {+0.00/55 8207 16554570} Ne4 {-0.52/24 163 310111} 70. Bxg7 {+0.00/58 8530 17487520} Kd8 {-0.52/24 67 95504}
71. Kb2 {+0.00/63 8764 17700437} Kd7 {-0.52/24 59 72974} 72. Kc1 {+0.00/57 8519 18836877} Kd6 {-0.53/24 37 62503}
73. Ba1 {+0.00/60 9569 22774805} Kd5 {-0.53/24 25 46824} 74. Bg7 {+0.00/57 8809 21669267} Kc4 {-0.52/24 58 82314}
75. f6 {+0.00/60 9485 22902727} Nxf6 {-0.53/24 38 71929} 76. Bxf6 {+0.00/52 9809 34157119} Kxb4 {-0.52/24 15 33914}
77. Bd8 {+0.00/52 11174 35306246} Kc3 {-0.53/24 28 47676} 78. Bf6+ {+0.00/56 15111 50434103} Kc4 {-0.53/24 36 67316}
79. Kb2 {+0.00/53 9003 32476037} Kb4 {+0.00/24 276 564449} 80. Bd8 {+0.00/58 12136 41110803} d2 {+0.00/24 33 64637}
81. Kc2 {+0.00/54 9275 34065395} d1=Q+ {+0.00/24 18 47036} 82. Kxd1 {+0.00/56 9803 36185661} Kb3 {+0.00/24 19 39755}
83. Be7 {+0.00/56 16464 80056740} b4 {+0.00/24 50 77846} 84. Bd8 {+0.00/56 8694 44348246} Kc4 {+0.00/24 36 59376}
85. Kd2 {+0.00/55 19513 92261596} b3 {+0.00/24 23 45069} 86. Kc1 {+0.00/58 8876 34811186} Kb5 {+0.00/24 52 93436}
87. Kb1 {+0.00/55 8222 30860897} Kc5 {+0.00/24 39 81810} 88. Bf6 {+0.00/54 9788 35373566} Kc6 {+0.00/24 44 99060}
89. Bc3 {+0.75/48 9408 33191651} Kb5 {+0.00/24 28 59602} 90. Kc1 {+0.75/40 28682 78662830} b2+ {+0.00/24 22 45676}
91. Kc2 {+0.05/31 29685 80744423} b1=Q+ {+0.00/24 24 47212} 92. Kxb1 {+0.31/26 3172 10781260} Ka4 {+0.00/24 14 27761}
93. Kc2 {+0.02/42 21970 70986797} Kb5 {+0.00/24 10 11392} 94. Kd3 {+0.02/35 3482 9761788} Kc5 {+0.00/24 24 41259}
95. Bd4+ {+0.00/40 5604 15689425} Kc6 {+0.00/24 37 56936} 96. Kc4 {+0.00/51 3511 10434345} Kb7 {+0.00/24 23 41878}
97. Kd5 {+0.00/52 4970 12149737} Kb8 {+0.00/24 19 33393} 98. Kc5 {+0.00/51 7742 23900560} Ka7 {+0.00/24 10 14860}
99. Kc6+ {+0.00/53 9240 26965589} Ka8 {+0.00/24 10 11143} 100. Be3 {+0.00/55 7454 22160595} Kb8 {+0.00/24 10 5709}
101. Bd4 {+0.00/57 7428 23132180} Ka8 {+0.00/24 10 6549} 102. Be3 {+0.00/56 7883 25209882} Kb8 {+0.00/24 10 5312}
103. Bd2 {+0.00/62 7290 23459909} Ka7 {+0.00/24 10 10910} 104. Be1 {+0.00/62 14464 51490002} Ka8 {+0.00/24 21 35748}
105. Kb6 {+0.00/61 14923 63462673} Kb8 {+0.00/24 20 32669} 106. Kxa6 {+0.00/63 19040 85989337} Ka8 {+0.00/24 10 8929}
107. Bd2 {+0.00/64 5785 23098383} Kb8 {+0.00/24 10 20174} 108. Be1 {+0.00/62 5939 43302213} Ka8 {+0.00/24 10 2204}
109. Bb4 {+0.00/63 7933 33932498} Kb8 {+0.00/24 21 38866} 110. Bc3 {+0.00/62 35873 237388436} Ka8 {+0.00/24 10 5875}
111. Bd2 {+0.00/67 7274 32205638} Kb8 {+0.00/24 10 2266} 112. Bc3 {+0.00/65 17354 39112077} Ka8 {+0.00/24 10 4224}
113. Bd4 {+0.00/64 3393 14139705} Kb8 {+0.00/24 10 5915} 114. Bf2 {+0.00/64 16756 44980021} Ka8 {+0.00/24 14 24216}
115. Bd4 {+0.00/65 11351 27565462} Kb8 {+0.00/24 10 5287} 116. Bf2 {+0.00/64 10270 38956141} Ka8 {+0.00/24 11 19442}
117. Bb6 {+0.00/62 6955 46390379} Kb8 {+0.00/24 10 3792} 118. Be3 {+0.00/71 12489 44256388} Ka8 {+0.00/24 10 13804}
119. Bc1 {+0.00/67 2057 8047937} Kb8 {+0.00/24 10 10563} 120. Bf4+ {+0.00/70 3805 20673636} Ka8 {+0.00/24 10 8098}
121. Bg5 {+0.00/65 3953 26738470} Kb8 {+0.00/24 10 9590} 122. Bf4+ {+0.00/71 26643 78030318} Ka8 {+0.00/24 10 7811}
123. Bh6 {+0.00/58 2060 15028201} Kb8 {+0.00/24 10 4421} 124. Be3 {+0.00/70 11200 68475752} Ka8 {+0.00/24 10 8989}
125. Bd2 {+0.00/72 18720 74868948} 1/2-1/2

[/pgn]

[Uri Blass]

It seems that there is an improvement in stockfish15 relative to previous version and it can get bigger depth with a single core at a reasonable time
in the relevant position
[fen]4r3/4b1R1/p7/1k2P3/1p6/1K6/1B6/8 w - - 3 38[/fen]

Stockfish_15_x64_avx2:
NNUE evaluation using nn-6877cd24400e.nnue enabled
1/1 00:00 19 19k -0.74 Rg7-f7
2/2 00:00 39 39k -0.82 Rg7-f7 a6-a5
3/3 00:00 103 103k -1.73 Rg7-f7 a6-a5 Rf7-f1
4/5 00:00 864 432k -0.41 Rg7-g1
5/6 00:00 2k 1,001k -2.45 Rg7-f7 a6-a5 Bb2-d4 a5-a4+ Kb3-b2
6/7 00:00 3k 954k -2.45 Rg7-f7 a6-a5 Bb2-d4 a5-a4+ Kb3-b2 a4-a3+ Kb2-a2
7/11 00:00 7k 1,064k -2.80 Rg7-g4 a6-a5 e5-e6 a5-a4+ Kb3-a2 b4-b3+ Ka2-a1
8/14 00:00 20k 1,069k -2.34 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-g1 b4-b3 Bg1-e3
9/13 00:00 28k 999k -2.61 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-e3 Kb5-c4 Rg7-g4+ Kc4-d5 Be3-g5 Be7xg5 Rg4xb4
10/14 00:00 47k 1,023k -2.73 Bb2-d4 a6-a5 Bd4-f2 a5-a4+ Kb3-b2 b4-b3 Bf2-g1 Be7-b4 Rg7-g5 Re8-e6 Rg5-h5
11/17 00:00 64k 1,052k -3.09 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-f2 Kb5-c4 Rg7-g4+ Kc4-d5 Kb2-b1 Re8-c8 Rg4-g7 Be7-c5 Bf2xc5 Rc8xc5
12/21 00:00 132k 1,155k -3.46 Bb2-d4 a6-a5 Kb3-b2 a5-a4 Bd4-f2 Kb5-c4 Rg7-g4+ Kc4-d5 Bf2-h4 Be7-c5 Bh4-f6 Re8-c8 Kb2-a2 Bc5-d4 Ka2-b1
13/21 00:00 301k 1,255k -3.80 Bb2-d4 a6-a5 Bd4-a7 a5-a4+ Kb3-a2 Kb5-c4 Rg7-g4+ Kc4-d5 e5-e6 Re8-a8 Ba7-f2 b4-b3+ Ka2-b2 Be7-d6 Rg4-d4+ Kd5xe6
14/26 00:00 433k 1,269k -3.73 Bb2-d4 a6-a5 Kb3-a2 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 e5-e6 Re8-c8 Rg4-d4+ Kd5xe6 Rd4-e4+ Ke6-f7 Re4-f4+ Kf7-e8 Ka2-b1 a4-a3
15/26 00:00 1,006k 1,328k -4.10 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-e3 b3-b2 Ba1xb2 a3xb2 Re3-f3
16/31 00:01 2,137k 1,356k -4.44 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-d3 Re8-b8 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-d4 Rb8-d8 Rf3-d3 Kg6-f7 Rd3xb3 Rd8xd4 Rb3-f3+ Kf7-e6 Rf3-e3+ Ke6-f7
17/34 00:02 3,879k 1,385k -4.74 Bb2-d4 a6-a5 e5-e6 a5-a4+ Kb3-c2 Kb5-c4 Rg7-g4 Kc4-d5 Kc2-d3 b4-b3 Rg4-e4 Re8-b8 Re4-e5+ Kd5-c6 Re5-e1 a4-a3 Bd4-e5 Rb8-b4 Kd3-c3 Kc6-d5 Be5-h8 Rb4-h4 Re1-d1+ Kd5xe6
18/30- 00:04 5,615k 1,400k -4.92 Bb2-d4 a6-a5
18/34 00:05 7,418k 1,411k -5.14 e5-e6 a6-a5 Kb3-c2 a5-a4 Bb2-d4 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b4 Be5-a1 Be7-g5 Ba1-b2
19/34 00:06 8,799k 1,416k -4.96 e5-e6 a6-a5 Bb2-d4 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b4 Be5-a1 Be7-c5 Rf3-f6+ Kg6-g5 Rf6-f3 a3-a2+ Kb1-b2 Bc5-d4+ Kb2-a3 b3-b2 Rf3-g3+ Kg5-h5
20/40 00:08 11,425k 1,425k -5.27 Kb3-c2 a6-a5 e5-e6 a5-a4 Bb2-d4 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b4 Be5-a1 Be7-c5
21/34 00:08 12,494k 1,430k -5.22 e5-e6 a6-a5 Bb2-e5 a5-a4+ Kb3-c2 Kb5-c4 Be5-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b5 Be5-h8 Rb5-b4 Bh8-a1 Be7-c5
22/41 00:09 13,396k 1,435k -5.15 e5-e6 a6-a5 Bb2-e5 a5-a4+ Kb3-c2 Kb5-c4 Be5-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-g3 Re8-b8 Rg3-d3+ Kd5xe6 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b5 Be5-h8 Rb5-b4 Rf3-c3 Kg6-f7 Rc3-f3+ Kf7-e6 Rf3-e3+ Ke6-d7 Re3-d3+ Kd7-c6 Bh8-a1 a3-a2+ Kb1-b2 Be7-f6+ Kb2-a3 b3-b2
23/50- 00:12 17,538k 1,447k -5.53 e5-e6 a6-a5
23/50- 00:15 22,558k 1,457k -5.90 e5-e6 a6-a5
23/50+ 00:15 23,210k 1,459k -5.53 e5-e6
23/50 00:16 24,084k 1,460k -5.62 e5-e6 a6-a5 Bb2-e5 a5-a4+ Kb3-c2 Kb5-c4 Be5-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-d3 Re8-b8 Rd3-e3+ Ke6-f7 Ba1-d4 Rb8-d8 Re3xe7+ Kf7xe7 Bd4-c5+ Ke7-e6 Bc5xa3 Ke6-d5 Ba3-e7 Rd8-h8 Be7-f6 Rh8-h2 Bf6-g7 Rh2-h1+ Kb1-b2 Kd5-c4 Bg7-e5 Rh1-h5 Be5-f6 Rh5-h2+ Kb2-b1 Kc4-d3
24/46- 00:20 30,674k 1,470k -6.03 e5-e6 a6-a5
24/50 00:22 32,912k 1,477k -5.89 e5-e6 a6-a5 Bb2-d4 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-d3 Re8-b8 Rd3-e3+ Ke6-f7 Ba1-d4 Rb8-d8 Re3xe7+ Kf7xe7 Bd4-c5+ Ke7-e6 Bc5xa3 Ke6-d5 Ba3-b2 Kd5-c4 Bb2-f6 Rd8-d3 Kb1-b2 Rd3-f3 Bf6-e5 Rf3-e3 Be5-g7 Re3-h3
25/46- 00:29 43,942k 1,482k -6.34 e5-e6 a6-a5
25/47- 00:36 53,940k 1,493k -6.79 e5-e6 a6-a5
25/47 00:48 72,745k 1,497k -7.21 e5-e6 a6-a5 Bb2-d4 a5-a4+ Kb3-c2 Kb5-c4 Bd4-a1 b4-b3+ Kc2-b1 a4-a3 Rg7-g4+ Kc4-d5 Rg4-d4+ Kd5xe6 Rd4-d3 Re8-b8 Rd3-e3+ Ke6-f7 Re3-f3+ Kf7-g6 Ba1-e5 Rb8-b4 Be5-a1 Be7-c5 Rf3-d3 Kg6-f7 Rd3-d5 b3-b2 Ba1xb2 Rb4xb2+ Kb1-a1 Rb2-c2 Ka1-b1 Kf7-e6 Rd5-h5 Rc2-c3 Kb1-a2 Ke6-d6 Rh5-h6+ Kd6-d5 Rh6-h1
26/38- 01:09 104,155k 1,504k -7.61 e5-e6 a6-a5
26/50 01:26 130,499k 1,512k -7.77 Kb3-c2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-g7 Kd5xe5 Kc2-d3 b4-b3 Rg7-h7 a4-a3 Bg1-d4+ Ke5-d5 Rh7-h5+ Kd5-c6 Rh5-e5 Re8-b8 Re5xe7 b3-b2 Bd4xb2 a3xb2 Re7-e1 b2-b1Q+ Re1xb1 Rb8xb1 Kd3-e4 Rb1-c1
27/41 01:55 169,365k 1,466k -7.77 Kb3-c2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-g7 Kd5xe5 Kc2-d3 b4-b3 Rg7-h7 a4-a3 Bg1-d4+ Ke5-d5 Rh7-h5+ Kd5-c6 Rh5-e5 Re8-b8 Re5xe7 b3-b2 Bd4xb2 a3xb2 Re7-e1 b2-b1Q+ Re1xb1 Rb8xb1 Kd3-e4 Rb1-f1 Ke4-e5 Kc6-d7 Ke5-d5 Rf1-e1 Kd5-c4 Re1-e5 Kc4-b3 Kd7-c6 Kb3-c3 Kc6-d5
28/47 02:02 180,551k 1,472k -7.77 Kb3-c2 a6-a5 Bb2-d4 a5-a4 Bd4-g1 Kb5-c4 Rg7-g4+ Kc4-d5 Rg4-g7 Kd5xe5 Kc2-d3 b4-b3 Rg7-h7 a4-a3 Bg1-d4+ Ke5-d5 Rh7-h5+ Kd5-c6 Rh5-e5 Re8-b8 Re5xe7 b3-b2 Bd4xb2 a3xb2 Re7-e1 b2-b1Q+ Re1xb1 Rb8xb1 Kd3-e4 Rb1-f1 Ke4-e5 Kc6-d7 Ke5-d5 Rf1-e1 Kd5-c4 Re1-e5 Kc4-b3 Re5-e2 Kb3-a4 Re2-b2 Ka4-a5 Rb2-b1 Ka5-a6 Rb1-b8 Ka6-a5 Kd7-c6

[Uri Blass]

It seems that stockfish15 does not get depth 29 in a reasonable time in that position so it still has a huge branching factor in some cases.

[Eelco de Groot]

May be 1. -d5 is not the best black answer!

1...d5 wins already, are you trying to find a faster win for black?

I showcased the best possible white's defense against Harvey on this game, because for all the moves I didn't play I was able to find an "easy win" (let's say a win where you could find the winning move in <48 hours.)

The moves I played had many traps, as there were positions where engines showed very high scores, but they were drawn*, so black has many "only moves", a deviation wouldn't have won the game, but Harvey played the winning moves all along.

(*I was able to reach such a position in the game, but it turned out to lose anyway, so black can possibly play into those traps and win anyway.)

Then we had a "David Vs. Goliath" game where I was black and played with much inferior hardware, but of course I already had all the analysis of how to bust all alternative defenses, and it held and I won easily (I played suboptimal moves at the end to make my opponent resign after realizing how futile the exercise was, playing "the worst move I can that still wins", for fun.)

But that was 2020 prehistory, the only difference now is that NNUE engines can find the winning moves in a short time without requiring human intervention. I guess an interesting question is "what's the highest depth you can give an engine playing black and still draw it with 1.g4", where you can use any resources you want for the white side. Back then I could still draw engines at depth 24. The position I reached against Harvey I could draw against Depth 32.

Can anybody show a series of moves from the white side that produces a draw against today's Stockfish at depth 24? That's the minimum you could show to claim it's possible 1.g4 draws (as I'm giving you unlimited resources for the white side.)

Nothing to do with the thread but good to see you back Uly !

[Ovyron]

I could prove in the third try that 1.g4 can draw against depth 24 of stockfish.
I guess it can even win against depth 24.

Thanks, that's very useful info (my claim is that if 1.g4 wins there's a depth stockfish can get already and beat any defense - too bad the branching factor might make this unworkable.)

[Ovyron]

Nothing to do with the thread but good to see you back Uly !

Hey Eelco - I've continued to lurk in the shadows, reading threads that are more than a year old, but new content appears faster than I can read it - it's a different feeling to be in "the present."

[Jouni]

Update . After 1.g4 d5 white has 5 good choices for move: Bg2 e3 g5 h3 and c4. I played a lot "long" SF games from every position. Now all games except one ended 0-1! g4 is losing.