PHCEL

[Rubinus]

Tournament with all opening moves. 1.g4 seems to be really lost, 0:28 so far, and no surprises in the form of White's gains in the remaining two games. Yet 2.5 years ago Stockfish didn't lose a single game, here White has lost all four so far. Coincidentally, today is Mr. Grob's birthday!

Next 1.f3. Estimate around midnight CET

90+30, Intel i7-12700H, no ponder
PHCEL

[Rubinus]

1.f3
1.Stockfish 7, 2.-4.Dragon, Berserk, Ethereal 5.5, 5.Obsidian 3.5, 6.Plenty 3.
Ideally a disturbed balance for the stronger to assert themselves.

Next 1.Nh3

[Rubinus]

1.Nh3
1.-2.Stockfish, Obsidian 5.5, 3.-4.Dragon, Berserk 5, 5.-6.Ethereal, Plenty 4.5
Interesting loss of Ethereal to Obsidian in terms of search differences.

overall ranking (g4, f3, Nh3)
1.Stockfish 17.5, 2.-3.Dragon, Berserk 15.5, 4.Ethereal 15, 5.Obsidian 14, 6.Plenty 12.5

Next 1.Na3

[Rubinus]

1.Na3
1.-2.Stockfish 6, 2.-3.Dragon, Berserk 5, 4.Obsidian 5, 5.-6.Ethereal, Plenty 4

overall ranking (g4, f3, Nh3, Na3)
1.Stockfish 23.5, 2.-3.Dragon, Berserk 21, 4.-5,Ethereal Obsidian 19, 6.Plenty 16.5

Next 1.h4

[Rubinus]

1.h4
Dead race, all 5.

overall ranking (g4, f3, Nh3, Na3, h4)
1.Stockfish 28.5, 2.-3.Dragon, Berserk 26, 4.-5,Ethereal Obsidian 24, 6.Plenty 21.5

Next 1.b4

[Rubinus]

1.b4
Dead race, all 5.

overall ranking (g4, f3, Nh3, Na3, h4, b4)
1.Stockfish 33.5, 2.-3.Dragon, Berserk 31, 4.-5,Ethereal Obsidian 29, 6.Plenty 26.5

Next 1.f4

[Rubinus]

1.f4
Dead race, all 5.

overall ranking (g4, f3, Nh3, Na3, h4, b4,f4)
1.Stockfish 38.5, 2.-3.Dragon, Berserk 36, 4.-5,Ethereal Obsidian 34, 6.Plenty 31.5

Next 1.a4
More boring than last time. Seems like it will be all draws until the best moves are played at the end, there might be a favourite somewhere.

[Rubinus]

1.a4
Dead race, all 5.
1.h3
Same

overall ranking (g4, f3, Nh3, Na3, h4, b4, f4, a4, h3)
1.Stockfish 48.5, 2.-3.Dragon, Berserk 46, 4.-5,Ethereal Obsidian 44, 6.Plenty 41.5

Next 1.b3

[Rubinus]

1.b3
Dead race, all 5.
1.d3; 1.a3; 1.Nc3
Same
Pretty boring. I still have to play the weaker moves c3, e3 and then hopefully something will start to happen.

But today I saw quite an interesting variant. I wouldn't expect the computer to use its own power on turn 5 g4.

[Event "AllFirstMove-1"] [Site "?"] [Date "2024.07.23"] [Round "26.5"] [White "PlentyChess 1.0.0-dev"] [Black "Berserk 13"] [Result "1/2-1/2"] [ECO "D00"] [PlyCount "66"] [EventDate "2024.05.31"] [EventType "tourn"] 1. Nc3 d5 2. d4 Nf6 3. Bf4 a6 4. e3 e6 5. g4 Bb4 6. Nge2 b5 7. a3 Be7 8. Rg1 O-O 9. h4 Nbd7 10. g5 Nh5 11. Bh2 c6 12. Bh3 g6 13. Bg4 Ng7 14. Nf4 e5 15. dxe5 Nxe5 16. Bxc8 Rxc8 17. Nfxd5 Nc4 18. Nxe7+ Qxe7 19. Qd4 Nf5 20. Qe4 Qd8 21. Rd1 Qa5 22. Rd7 Rfe8 23. Qg4 Nxb2 24. Qb4 Qxb4 25. axb4 Kf8 26. Rg4 c5 27. bxc5 Rxc5 28. Nd5 Rxc2 29. Nf6 Rec8 30. Bf4 Rc1+ 31. Ke2 R8c2+ 32. Kf3 Rd1 33. Ra7 Rd8 1/2-1/2

overall ranking (g4, f3, Nh3, Na3, h4, b4, f4, a4, h3, b3 d3, a3, Nc3)
1.Stockfish 68.5, 2.-3.Dragon, Berserk 66, 4.-5,Ethereal Obsidian 64, 6.Plenty 61.5

Next 1.c3