TalkChess.com

small hardware, 4 threads
lowest setting of 850 elo "beginner" in Shredder "playing strength"

"One of the most sensational moves ever seen on a chessboard was played in Liverpool in 1910. The game was published in a
contemporary magazine, only to be ignored by the chess world for nearly a century. Finally, though, the move was hailed as
perhaps even exceeding Marshall’s ‘golden’ 23...Qg3 for beauty and shock value."

33...Qg4

[D] 2q5/ppr3k1/3p4/P1pPp1bB/2P4n/1P5P/3Q1P1K/6R1 b - -

Deep Shredder 12 x64

15/36 0:01 +0.67 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (4.083.934) 3490
16/42 0:02 +0.84 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 (9.432.733) 3496 SB:1
17/43 0:04 +0.91 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (15.225.682) 3498 SB:1
18/44 0:05 +0.91 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (20.465.620) 3498 SB:6
19/46 0:32 +1.23 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kf6 (115.785.773) 3520 SB:112


[Event "Liverpool"]
[Date "1910.01.??"]
[White "Macdonald, Edmund E."]
[Black "Burn, Amos"]
[ECO "C41"]
[Result "0-1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Nc3 Ngf6 5. Bc4 Be7 6. O-O
O-O 7. Re1 c6 8. d5 c5 9. Bg5 h6 10. Be3 Kh7 11. h3 Nb6
12. Bd3 Bd7 13. a4 Rc8 14. a5 Na8 15. b3 Nc7 16. Ne2 Nce8
17. c4 Ng8 18. g4 g6 19. Ng3 Ng7 20. Qd2 Rc7 21. Kh2 Qc8
22. Rg1 f5 23. gxf5 gxf5 24. exf5 Nxf5 25. Nh5 Kh8
26. Rxg8+ Rxg8 27. Bxh6 Be8 28. Bg7+ Rxg7 29. Nxg7 Kxg7
30. Rg1+ Bg6 31. Ng5 Nh4 32. Bxg6 Bxg5 33. Bh5 Qg4 34. Rxg4
Nf3+ 35. Kg2 Nxd2 36. Rxg5+ Kh6 37. h4 Nxb3 38. Rf5 Nxa5
39. Be2 Kg7 40. h5 Rf7 41. Rg5+ Kh8 42. h6 Rf6 43. Rh5 Rf4
44. Rg5 Nxc4 45. Bd3 Nb2 46. Bc2 c4 47. Rg7 Nd3 48. Bb1
Rxf2+ 49. Kg3 Rb2 0-1


[D] 5rk1/pp4pp/4p3/2R3Q1/3n4/2q4r/P1P2PPP/5RK1 b - -

Deep Shredder 12 x64

15/34 0:01 -5.66 23...Qg3 24.Qxg3 Ne2+ 25.Kh1 Nxg3+ 26.Kg1 Ne2+ 27.Kh1 Rc3 (3.267.423) 2948 SB:1
16/36 0:02 -5.68 23...Qg3 24.Qxg3 Ne2+ 25.Kh1 Nxg3+ 26.Kg1 Ne2+ 27.Kh1 Rc3 (6.276.989) 2980 SB:2
17/36 0:04 -5.78 23...Qg3 24.Qxg3 Ne2+ 25.Kh1 Nxg3+ 26.Kg1 Ne2+ 27.Kh1 Rc3 (13.604.292) 3017 SB:7
18/44 0:07 -5.87 23...Qg3 24.Qxg3 Ne2+ 25.Kh1 Nxg3+ 26.Kg1 Ne2+ 27.Kh1 Rc3 (22.028.678) 3083 SB:11

[Event "DSB Kongress XVIII"]
[Site "Breslau"]
[Date "1912"]
[Round "06"]
[White "Stefan Levitsky"]
[Black "Frank James Marshall"]
[ECO "B23"]
[Result "0-1"]

1. d4 e6 2. e4 d5 3. Nc3 c5 4. Nf3 Nc6 5. exd5 exd5 6. Be2
Nf6 7. O-O Be7 8. Bg5 O-O 9. dxc5 Be6 10. Nd4 Bxc5 11. Nxe6
fxe6 12. Bg4 Qd6 13. Bh3 Rae8 14. Qd2 Bb4 15. Bxf6 Rxf6
16. Rad1 Qc5 17. Qe2 Bxc3 18. bxc3 Qxc3 19. Rxd5 Nd4
20. Qh5 Ref8 21. Re5 Rh6 22. Qg5 Rxh3 23. Rc5 Qg3 0-1

kgburcham wrote:small hardware, 4 threads
lowest setting of 850 elo "beginner" in Shredder "playing strength"

"One of the most sensational moves ever seen on a chessboard was played in Liverpool in 1910. The game was published in a
contemporary magazine, only to be ignored by the chess world for nearly a century. Finally, though, the move was hailed as
perhaps even exceeding Marshall’s ‘golden’ 23...Qg3 for beauty and shock value."

33...Qg4

[D] 2q5/ppr3k1/3p4/P1pPp1bB/2P4n/1P5P/3Q1P1K/6R1 b - -

Deep Shredder 12 x64

15/36 0:01 +0.67 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (4.083.934) 3490
16/42 0:02 +0.84 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 (9.432.733) 3496 SB:1
17/43 0:04 +0.91 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (15.225.682) 3498 SB:1
18/44 0:05 +0.91 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kh7 37.Rg6 Rd7 (20.465.620) 3498 SB:6
19/46 0:32 +1.23 33...Qg4 34.Rxg4 Nf3+ 35.Kg3 Nxd2 36.Rxg5+ Kf6 (115.785.773) 3520 SB:112


[Event "Liverpool"]
[Date "1910.01.??"]
[White "Macdonald, Edmund E."]
[Black "Burn, Amos"]
[ECO "C41"]
[Result "0-1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Nc3 Ngf6 5. Bc4 Be7 6. O-O
O-O 7. Re1 c6 8. d5 c5 9. Bg5 h6 10. Be3 Kh7 11. h3 Nb6
12. Bd3 Bd7 13. a4 Rc8 14. a5 Na8 15. b3 Nc7 16. Ne2 Nce8
17. c4 Ng8 18. g4 g6 19. Ng3 Ng7 20. Qd2 Rc7 21. Kh2 Qc8
22. Rg1 f5 23. gxf5 gxf5 24. exf5 Nxf5 25. Nh5 Kh8
26. Rxg8+ Rxg8 27. Bxh6 Be8 28. Bg7+ Rxg7 29. Nxg7 Kxg7
30. Rg1+ Bg6 31. Ng5 Nh4 32. Bxg6 Bxg5 33. Bh5 Qg4 34. Rxg4
Nf3+ 35. Kg2 Nxd2 36. Rxg5+ Kh6 37. h4 Nxb3 38. Rf5 Nxa5
39. Be2 Kg7 40. h5 Rf7 41. Rg5+ Kh8 42. h6 Rf6 43. Rh5 Rf4
44. Rg5 Nxc4 45. Bd3 Nb2 46. Bc2 c4 47. Rg7 Nd3 48. Bb1
Rxf2+ 49. Kg3 Rb2 0-1

Interesting game, but
1) After 33.Be4! (instead of 33.Bh5?) White had an easy won game
2) White has still a reasonalbe advantage after 35.Kg3! (instead of 35.Kg2?)
Conclusion: Marshalls queen sacrifice is won in all variations whereas in this game this is not the case.
Kurt

So much for the strength settings of Shredder...

Albert Silver wrote:So much for the strength settings of Shredder...

Someone should try Hiarcs at 850 Elo to see if it plays that move

hiarcs 13.2 850 elo seems to do a much 'better' job (giving up to 3 mins on each position)...

1st board (Qg4)

[+0.48] d=2 1...Qg4 (0:01:52) 0kN
[+0.68] d=1 1...Qg4 (0:01:24) 0kN
[+0.76] d=1 1...Qd8 2.Rxg5+ Kh6 (0:00:44) 0kN
[+1.26] d=1 1...Qd8 (0:00:40) 0kN
[+1.15] d=1 1...Ng6 (0:00:36) 0kN
[+0.77] d=1 1...Kf8 (0:00:26) 0kN
[+1.59] d=1 1...Kh7 2.Qxg5 (0:00:25) 0kN
[+0.71] d=1 1...Kh7 (0:00:25) 0kN
[+2.17] d=1 1...Kh8 2.Qxg5 (0:00:24) 0kN
[+0.60] d=1 1...Kh8 (0:00:23) 0kN
[+3.58] d=1 1...Qf8 2.Qxg5+ Kh7 3.Qxh4 (0:00:23) 0kN
[+3.74] d=1 1...Qf8 (0:00:19) 0kN
[+4.42] d=1 1...Qf5 2.Rxg5+ Kf8 3.Rxf5+ Nxf5 (0:00:18) 0kN
[-0.32] d=1 1...Qf5 (0:00:09) 0kN

2nd board (Qg3)

[-4.18] d=2 1...Qa3 2.Rc7 Ne2+ (0:02:17) 0kN
[-3.90] d=2 1...Qa3 2.Rc7 (0:01:56) 0kN
[-4.69] d=1 1...Qa3 2.f3 (0:00:21) 0kN
[-1.14] d=1 1...Qa3 (0:00:14) 0kN