You must agree to rules to read this Deep Blue f4 thread

[kgburcham]

Rule #1. If you hate the US for beating the #1 chess player in the world in 1997 then do not continue past this point. You have what is medically diagnosed as USAREDASS and you will not understand the shallow chess logic of this post. You have been psyched out.
Rule #2. If you have not read, studied, and tested every move of Deep Blues games then you may continue past this point, but it becomes a read only thread-you may not reply.
Rule #3. If you are a GM or Super GM (cough), and you have technical questions about any positions or lines in Deep Blue games then email me. I will help you understand how Deep Blue made these moves and how several of todays programs find all of Deep Blue moves, except the one Deep Blue blunder that is accepted as a bug.
Rule #4. If you have been medically diagnosed with Rybka Jock Itch, then do not continue. You will not understand that Deep Blue would Knock out Rybka in the first minute of the first round, sad.

If you agree to rules then continue:

The GM analysis for this Deep Blue move is incorrect. Kasparovs thoughts about this move are incorrect. This move is a common program move made by many programs. This move when made was a surprise to GM and Super GM because this move was above their ability to think a program could make this move. The Super GM and GM did not realize the importance of this move but Deep Blue did and todays programs do. This was regarded by many as a "Human Move" claiming also a "cheating move". There is no doubt that this is completely untrue and shows a lack of chess program knowledge. Kasparov was rude when he asked for logs to check for human interference. Kasparov was depressed when he found out that his opponent had the ability to beat him and possibly win the match. Kasparov was a sore loser and he let his overinflated ego get the best of him. Kasparov was an embarrassment as a representative of the chess world.
Kasparov should have been overjoyed for the accomplishments the programmers made. For Kasparov would win many games in his future using programs as a teaching aid.

26.f4
[D] r1rq1bk1/3b1ppn/p2p3p/1p1Pp3/PPp1P3/R1P1B1NP/2B1QPP1/R5K1 w - -


Program #1

26.f4
+/= (0.54) Depth: 12/28 00:00:07 8965kN
26.f4 exf4 27.Bxf4 Nf6 28.Qf2 Be7 29.Be3 Qf8 30.axb5
+/= (0.64) Depth: 12/28 00:00:07 9874kN
26.f4
+/= (0.51) Depth: 13/32 00:00:09 11877kN
26.f4 exf4 27.Bxf4 a5 28.bxa5 bxa4 29.Bxa4 Rxa5 30.Bxd7 Rxa3 31.Rxa3 Qxd7 32.Qf2
+/- (0.74) Depth: 13/33 00:00:11 14906kN
26.f4 Be7 27.fxe5 dxe5 28.Qh5 Bd6 29.axb5
+/= (0.70) Depth: 14/36 00:00:17 22756kN
26.f4 exf4 27.Bxf4 Nf6 28.Qf2 Rcb8 29.Qd4 a5 30.bxa5 Rxa5 31.axb5
+/- (0.72) Depth: 15/38 00:00:30 40828kN
26.f4 exf4 27.Bxf4 Nf6 28.Qf2 a5 29.bxa5
+/- (0.72) Depth: 16/38 00:00:42 56895kN
26.f4 exf4 27.Bxf4 a5 28.axb5
+/- (0.76) Depth: 17/42 00:01:56 151mN
26.f4 a5 27.axb5 exf4 28.Bxf4 axb4 29.Rxa8 Rxa8 30.Rxa8 Qxa8 31.Qxc4 Qa7+ 32.Qd4 Qa1+ 33.Kh2 Qb2 34.Qd3
+/- (0.82) Depth: 18/48 00:05:36 433mN
26.f4 a5 27.axb5 axb4 28.Rxa8 Rxa8 29.Rxa8 Qxa8 30.Qxc4 exf4 31.Bxf4
+/- (0.83) Depth: 19/48 00:07:45 597mN
26.f4 Be7 27.fxe5 dxe5 28.Kh2 Bh4 29.Qf3 Bg5 30.Nf5 Bxf5 31.Bxg5 Bxe4 32.Bxd8
+/- (0.87) Depth: 20/49 00:26:44 2020mN
26.f4 Be7 27.fxe5 dxe5 28.Kh2 Bh4 29.Nf5 Bxf5 30.exf5 Be7 31.d6 Bxd6 32.Be4 Rab8 33.Ba7 Ng5 34.Bxb8 Bxb8 35.axb5 axb5 36.Ra8 Nxe4 37.Qxe4 Qd7 38.R1a6 Re8
+/- (0.86) Depth: 21/49 00:36:22 2750mN
26.f4 Be7 27.fxe5 dxe5 28.Kh2 Bg5 29.Nf5 Bxf5 30.exf5 Bf4+ 31.Bxf4 exf4 32.Qf3 a5 33.axb5 axb4 34.Rxa8 Rxa8 35.Rxa8 Qxa8 36.d6 Qd8 37.Qxf4 b3 38.Bb1 Qb8 39.Qxc4 Qxd6+ 40.Kg1 Qd1+ 41.Qf1 Qd2 42.c4 Qe3+ 43.Kh1 Ng5 44.Qg1 Qg3
+/- (0.78) Depth: 22/51 01:05:21 4931mN
26.f4 Be7 27.Qf3 a5 28.bxa5 Qxa5 29.axb5 Qxa3
+/- (0.80) Depth: 23/54 02:47:49 12658mN


Program #2

11.07 0:02 +0.45 26.f4 exf4 27.Bxf4 a5 28.bxa5 Rxa5 29.axb5 Rxa3 30.Rxa3 Nf6 (422.670) 162
<skip>
18.03 4:14 +0.58 26.f4 exf4 27.Bxf4 (39.141.484) 157
19.01 6:05 +0.48 26.f4 exf4 27.Bxf4 g6 28.Qd2 Qh4 29.Qf2 Re8 30.axb5 Bxb5 31.Ba4 Rad8 32.Bxb5 axb5 33.Ra7 Re7 34.Rxe7 Qxe7 35.Qb6 Qe8 36.Ra5 Bg7 37.Ra3 Bf8 (57.879.732) 162
20.01 7:42 +0.48 26.f4 exf4 27.Bxf4 g6 28.Qd2 Qh4 29.Qf2 Re8 30.axb5 Bxb5 31.Ba4 Rad8 32.Bxb5 axb5 33.Ra7 Re7 34.Rxe7 Qxe7 35.Qb6 Qe8 36.Ra5 Bg7 37.Ra3 Bf8 (73.946.023) 163
21.01 18:53 +0.48 26.f4 exf4 27.Bxf4 g6 28.Qd2 Qh4 29.Qf2 Re8 30.axb5 Bxb5 31.Ba4 Rad8 32.Bxb5 axb5 33.Ra7 Re7 34.Rxe7 Qxe7 35.Qb6 Qe8 36.Ra5 Bg7 37.Ra3 Bf8 (189.603.052) 171

Program #3

26.f4 exf4 27.Bxf4 g5 28.Be3 Bg7 29.Qf2 Be5 30.axb5 axb5
+/= (0.63) Depth: 13/36 00:00:07 15401kN
26.f4 exf4 27.Bxf4 g5 28.Be3 Bg7 29.Qf2 Be5 30.axb5 axb5
+/= (0.63) Depth: 13/36 00:00:08 17361kN
26.f4 Be7 27.fxe5 dxe5 28.Rf1 Bg5 29.Bc5 Nf6 30.Nf5 Bxf5 31.Rxf5
+/= (0.67) Depth: 14/43 00:00:16 33667kN
26.f4 Be7 27.fxe5 dxe5 28.Rf1 Bg5 29.Bc5 Nf6 30.Nf5 Bxf5 31.Rxf5
+/= (0.67) Depth: 14/43 00:00:23 50656kN
26.f4 Be7 27.fxe5 dxe5 28.Qf3 Bg5 29.Nf5 Bxe3+ 30.Qxe3 Bxf5 31.exf5 bxa4 32.Qxe5
+/= (0.69) Depth: 15/43 00:00:28 61603kN
26.f4 Be7 27.fxe5 dxe5 28.Qf3 Bg5 29.Nf5 Bxe3+ 30.Qxe3 Bxf5 31.exf5 bxa4 32.Qxe5
+/= (0.69) Depth: 15/43 00:00:31 68499kN
26.f4 Be7 27.fxe5 dxe5 28.Kh2 Bg5 29.Nf5 Bxe3 30.Qxe3 bxa4 31.Nd6 Bxh3 32.Nxc8 Bxc8
+/= (0.65) Depth: 16/43 00:00:45 96889kN
This program goes back to Bd1 and stays Bd1 for considerable depth.


[Event "IBM Kasparov vs. Deep Blue Rematch"]
[Site "New York, NY USA"]
[Date "1997.05.04"]
[Round "2"]
[White "Deep Blue"]
[Black "Kasparov, Garry"]
[ECO "C93"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1
b5 7. Bb3 d6 8. c3 O-O 9. h3 h6 10. d4 Re8 11. Nbd2 Bf8
12. Nf1 Bd7 13. Ng3 Na5 14. Bc2 c5 15. b3 Nc6 16. d5 Ne7
17. Be3 Ng6 18. Qd2 Nh7 19. a4 Nh4 20. Nxh4 Qxh4 21. Qe2
Qd8 22. b4 Qc7 23. Rec1 c4 24. Ra3 Rec8 25. Rca1 Qd8 26. f4
Nf6 27. fxe5 dxe5 28. Qf1 Ne8 29. Qf2 Nd6 30. Bb6 Qe8
31. R3a2 Be7 32. Bc5 Bf8 33. Nf5 Bxf5 34. exf5 f6 35. Bxd6
Bxd6 36. axb5 axb5 37. Be4 Rxa2 38. Qxa2 Qd7 39. Qa7 Rc7
40. Qb6 Rb7 41. Ra8+ Kf7 42. Qa6 Qc7 43. Qc6 Qb6+ 44. Kf1
(44. Kh2) 44... Rb8 45. Ra6 1-0

[BubbaTough]

Rule #1. If you hate the US for beating the #1 chess player in the world in 1997 then do not continue past this point. You have what is medically diagnosed as USAREDASS and you will not understand the shallow chess logic of this post. You have been psyched out.
Rule #2. If you have not read, studied, and tested every move of Deep Blues games then you may continue past this point, but it becomes a read only thread-you may not reply.
Rule #3. If you are a GM or Super GM (cough), and you have technical questions about any positions or lines in Deep Blue games then email me. I will help you understand how Deep Blue made these moves and how several of todays programs find all of Deep Blue moves, except the one Deep Blue blunder that is accepted as a bug.
Rule #4. If you have been medically diagnosed with Rybka Jock Itch, then do not continue. You will not understand that Deep Blue would Knock out Rybka in the first minute of the first round, sad.

If you agree to rules then continue:

Are you going to make this the header for all your posts?

-Sam

[sje]

Symbolic's A/B search after a few minutes:

Code: Select all

[PV] 24. f4 exf4 25. Bxf4 g5 26. Be3 Bg7 27. Qd2 a5 28. bxa5 Qxa5 29. Nf5 Bxf5 30. exf5   Score: +0.462

[PV] 24. f4 exf4 25. Bxf4 a5 26. axb5 axb4 27. Rxa8 Rxa8 28. Rxa8 Qxa8 29. Qxc4 Qa1+ 30. Kh2 Qxc3 31. Bd3 g5 32. Be3   Score: +0.633

[PV] 24. f4 f6 25. axb5 axb5 26. Ra5 Be7 27. Qf3 Kh8 28. fxe5 fxe5 29. Qf7 Be8 30. Qf1 Bd7 31. Nf5 Bxf5 32. Qxf5   Score: +0.633