SPCC: Testrun of Alexandria 8 finished

[pohl4711]

My UHO-Top15 Ratinglist is the world's first engine-ratinglist, using UHO-openings, and the world's first ratinglist offering additionally Gamepair-statistics.

Testrun of Alexandria 8.0 finished.

https://www.sp-cc.de

Also take a look at the EAS-Ratinglist, the world's first engine-ratinglist not measuring strength of engines but engines's style of play:
https://www.sp-cc.de/eas-ratinglist.htm

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[pohl4711]

Look at this incredible queen-sacrifice by Alexandria 8 in the testrun. My Interesting Wins Search Tool ranked this game as the best of the testrun.
15000 games, 3min+1sec, singlethread, 6moves UHO-openings (white is always better!)
Alexandria 8 sacs its queen already in move 8/9 (with black!!!), only for getting an attack and preventing white from castling.
Such early queensacs are very, very rare! Especially, when played by a not very aggressive playing engine like Alexandria.

[pgn]
[Event "UHO Ratinglist"]
[Site "?"]
[Date "2025.03.05"]
[Round "124"]
[White "Viridithas 16.0 a512"]
[Black "Alexandria 8.0 a512"]
[Result "0-1"]
[ECO "A25"]
[Opening "English"]
[Variation "Sicilian Reversed"]
[TimeControl "180+1"]
[Annotator "IWS-Tool: Queen Sacrifice found in this game"]
[Termination "adjudication"]
[PlyCount "116"]
[GameDuration "00:07:18"]
[GameEndTime "2025-03-05T02:09:51.686 Mitteleuropäische Zeit"]
[GameStartTime "2025-03-05T02:02:33.525 Mitteleuropäische Zeit"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Nf3 Nf6 5. d4 e4 6. Nh4 d5 7. Bg5 Bb4 8.
cxd5 Nxd5 9. Bxd8 Nxc3 10. Qb3 Nxe2+ 11. Kd1 Nexd4 12. Qe3 Be6 13. Bxc7 Rc8
14. Bf4 O-O 15. Kc1 Bc5 16. Kb1 Nb4 17. Qc3 Nd5 18. Qa5 Nxf4 19. gxf4 Be7
20. Qxa7 Rfd8 21. Ba6 Bxh4 22. Bxb7 Rc7 23. Rd1 Rcd7 24. Qb6 Bf7 25. b3 Bf6
26. Ba6 Rd6 27. Qa5 h6 28. Bf1 Kh7 29. Bh3 Be6 30. Bf1 Bd5 31. Qb4 e3 32.
fxe3 Be4+ 33. Kc1 Nxb3+ 34. Qxb3 Rxd1+ 35. Qxd1 Rxd1+ 36. Kxd1 Bxa1 37. Bb5
Bf6 38. Ke2 g5 39. a4 Bd8 40. Kf2 Bb6 41. a5 Bxa5 42. h4 gxh4 43. Bf1 Bb6
44. Ke2 Kg7 45. Bh3 Kf6 46. Kf2 Bd5 47. Bf1 Bf7 48. Bb5 Bh5 49. Ba4 h3 50.
Bc6 Bg4 51. Bd5 h2 52. Bh1 Bd1 53. Bg2 Bc2 54. Kg3 Be4 55. Kxh2 Bxg2 56.
Kxg2 Bxe3 57. Kf3 Bc1 58. Ke2 Bxf4 0-1
[/pgn]

[Jouni]

Incredible? SF 5 second analysis:

1. = (0.00): 8...Nxd5 9.Bxd8 Nxc3 10.Qb3 Nxe2+ 11.Kd1 Nexd4 12.Qe3 Be6 13.Bxc7 Rc8 14.Bf4 Kf7 15.Kc1 Na5+ 16.Kb1 Rhd8 17.Be2 Bc4 18.Bh5+ g6 19.Rd1 gxh5 20.b3 a6
2. +/- (1.20): 8...Qxd5 9.Bxf6 gxf6 10.e3 f4 11.Ng2 fxe3 12.fxe3 Bd7 13.Be2 Bxc3+ 14.bxc3 0-0-0 15.0-0 h5 16.Rxf6 Qg5 17.Qf1 h4 18.Qf4 Qxf4 19.Rxf4 hxg3 20.hxg3 Ne7 21.Rxe4 Nd5 22.Rc1 Rh3 23.Kf2 Rg8 24.Rh4 Rgxg3 25.Rxh3 Rxh3 26.Bf3 Nf6 27.e4 Ng4+ 28.Ke2
3. +- (1.78): 8...Bxc3+ 9.bxc3 Qxd5 10.Bxf6 gxf6 11.e3 f4 12.exf4 Qa5 13.Rc1 Be6 14.Be2 0-0-0 15.0-0 Qxa2 16.Rc2 Qb3 17.Qd2 Kb8 18.Ng2 Na5 19.Ne3 Nc4
4. +- (3.68): 8...h6 9.Bxf6 Qxf6 10.dxc6 g5 11.Ng2 Bxc3+ 12.bxc3 Qxc6 13.Qc2 Bd7 14.Ne3 f4 15.Nd1 e3 16.Rg1 0-0-0 17.Bg2 Qa6 18.Rb1 Ba4 19.Qd3 Qxd3 20.exd3 Rhe8 21.Bh3+ Kb8

[pohl4711]

Incredible? SF 5 second analysis:

1. = (0.00): 8...Nxd5 9.Bxd8 Nxc3 10.Qb3 Nxe2+ 11.Kd1 Nexd4 12.Qe3 Be6 13.Bxc7 Rc8 14.Bf4 Kf7 15.Kc1 Na5+ 16.Kb1 Rhd8 17.Be2 Bc4 18.Bh5+ g6 19.Rd1 gxh5 20.b3 a6
2. +/- (1.20): 8...Qxd5 9.Bxf6 gxf6 10.e3 f4 11.Ng2 fxe3 12.fxe3 Bd7 13.Be2 Bxc3+ 14.bxc3 0-0-0 15.0-0 h5 16.Rxf6 Qg5 17.Qf1 h4 18.Qf4 Qxf4 19.Rxf4 hxg3 20.hxg3 Ne7 21.Rxe4 Nd5 22.Rc1 Rh3 23.Kf2 Rg8 24.Rh4 Rgxg3 25.Rxh3 Rxh3 26.Bf3 Nf6 27.e4 Ng4+ 28.Ke2
3. +- (1.78): 8...Bxc3+ 9.bxc3 Qxd5 10.Bxf6 gxf6 11.e3 f4 12.exf4 Qa5 13.Rc1 Be6 14.Be2 0-0-0 15.0-0 Qxa2 16.Rc2 Qb3 17.Qd2 Kb8 18.Ng2 Na5 19.Ne3 Nc4
4. +- (3.68): 8...h6 9.Bxf6 Qxf6 10.dxc6 g5 11.Ng2 Bxc3+ 12.bxc3 Qxc6 13.Qc2 Bd7 14.Ne3 f4 15.Nd1 e3 16.Rg1 0-0-0 17.Bg2 Qa6 18.Rb1 Ba4 19.Qd3 Qxd3 20.exd3 Rhe8 21.Bh3+ Kb8

So what? In the testrun, the engines have to play fast (3min+1sec) and are running slow (singlethread). So, a queensac is very hard to find. And a queensac so early in the game is very rare. I have not seen such an early queensac in an enginegame before as far as I remember.
Show me just one other enginegame with a queensac in move 8 or 9...