Will computer soon be playing chess strong as humans?

[whereagles]

yuri, a shallow 1 min search with SF7 does yield 24. Rxd4 as best move, so engines do play it... it's accepting the sac that is losing.

[Ozymandias]

[pgn][Event "Hoogovens A Tournament"]
[Site "Wijk aan Zee NED"]
[Date "1999.01.20"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Garry Kasparov"]
[Black "Veselin Topalov"]
[ECO "B06"]
[WhiteElo "2812"]
[BlackElo "2700"]
[PlyCount "87"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Qd2 c6 6. f3 b5
7. Nge2 Nbd7 8. Bh6 Bxh6 9. Qxh6 Bb7 10. a3 e5 11. O-O-O Qe7
12. Kb1 a6 13. Nc1 O-O-O 14. Nb3 exd4 15. Rxd4 c5 16. Rd1 Nb6
17. g3 Kb8 18. Na5 Ba8 19. Bh3 d5 20. Qf4+ Ka7 21. Rhe1 d4
22. Nd5 Nbxd5 23. exd5 Qd6 24. Rxd4 cxd4 25. Re7+ Kb6
26. Qxd4+ Kxa5 27. b4+ Ka4 28. Qc3 Qxd5 29. Ra7 Bb7 30. Rxb7
Qc4 31. Qxf6 Kxa3 32. Qxa6+ Kxb4 33. c3+ Kxc3 34. Qa1+ Kd2
35. Qb2+ Kd1 36. Bf1 Rd2 37. Rd7 Rxd7 38. Bxc4 bxc4 39. Qxh8
Rd3 40. Qa8 c3 41. Qa4+ Ke1 42. f4 f5 43. Kc1 Rd2 44. Qa7 1-0[/pgn]

Another example of "brilliant" move 24.Rxd4!!?

Engines never select this move. Not because they are blind, but because they do not blunder

Code: Select all

Stockfish 171114, D=42, 100 BN
01. -0.43: 24...Kb6 25.b4 Qxf4 26.Rxf4 Nxd5 27.Rxf7 cxb4 28.axb4 Nxb4
02. =0.00: 24...Rhe8 25.Rxe8 Nxe8 26.Qxf7+ Kb6 27.Nc6 Bxc6 28.dxc6 Qxd4
03. =0.00: 24...Rhf8 25.c4 cxd4 26.Qxd4+ Kb8 27.Re7 Nd7 28.Bxd7 Rxd7
04. =0.00: 24...Rhg8 25.c4 cxd4 26.Qxd4+ Kb8 27.c5 Qc7 28.Qxf6 Rxd5
05. =0.00: 24...Bxd5 25.Rxd5 Nxd5 26.Qxf7+ Nc7 27.Re6 Qd1+ 28.Ka2 Rd7  
06. =0.11: 24...g5 25.Qxd6 Rxd6 26.Rdd1 Rxd5 27.Rxd5 Bxd5 28.c4 bxc4
07. =0.15: 24...Nxd5 25.Qxf7+ Kb8 26.Rdd1 c4 27.Re6 Qc7 28.Qxc7+ Nxc7
08. +0.42: 24...Qxf4 25.Rxf4 Nxd5 26.Rxf7+ Kb6 27.Nb3 Rhe8 28.Rxe8 Rxe8
09. +0.70: 24...Kb8 25.Qxd6+ Rxd6 26.Rf4 Bxd5 27.c4 Nh5 28.cxd5 Nxf4
10. +0.86: 24...Bb7 25.Qxd6 Rxd6 26.Rdd1 Re8 27.Rxe8 Nxe8 28.Nxb7 Kxb7
11. +1.47: 24...h5 25.c4 g5 26.Qxd6 Rxd6 27.Re7+ Kb8 28.Rd2 g4
12. +1.95: 24...h6 25.c4 bxc4 26.Nxc4 Nxd5 27.Qxf7+ Qc7 28.Qxc7+ Nxc7
13. +2.85: 24...c4 25.Rxc4 Qxf4 26.Rxf4 Nxd5 27.Rxf7+ Kb8 28.c4 bxc4
14. +3.62: 24...Ne8 25.Qxf7+ Nc7 26.Re6 Rd7 27.Rxd6 Rxf7 28.Rd2 Ne8
15. +3.87: 24...b4 25.axb4 cxb4 26.Rxb4 Qxf4 27.Rxf4 Rhe8 28.Rxe8 Nxe8
16. +5.30&#58; 24...cxd4 25.Re7+ Kb8 26.Qxd4 Nd7 27.Bxd7 Rxd7 28.Rxd7 Qxd7     <----- Topalov
17. +6.18&#58; 24...Ng4 25.Nc6+ Bxc6 26.dxc6 Qxf4 27.Rxf4 Nh6 28.Re7+ Ka8

Glad to see this move again. I fed it to the engines, a long time ago, and also concluded that the only brilliancy on Kasparov's part, was introducing the intimidation factor into the game. When you do that, a specialty for him, your opponent will many times react cowardly or aggressively (like in Topalov's case). In any case, it's all about the wow factor, a psychological weapon, not the best move necessarily. That's why I've preferred Freestyle chess, over human chess, for a decade now, if you want quality chess there's nowhere else to go.

[rabbits23]

Thomas: You argue that computers don't play complex , brilliant chess moves that humans do because they avoid all the weak tactical moves that humans make. You infer that they build up strong tactical positions and wear the opponent down. I do agree that this is a feature of their play.Nonetheless I maintain that computer chess programs are capable of seeing deeply.For example when I put positions to my computer chess programs from games between strong human players and which have moves/solutions which are deep and complex they inevitably find it.
Allan

[zullil]

Louis,
which SF version did you use?

I tried it with SF 16032816_x64_modern on an AMD 8 core system, using 16GB hash and syzygy tables (yes, there were tb hits).

Very latest developmental version (just compiled). 16 threads and 1 GB hash. No TBs.

Seven seconds:

Code: Select all

info depth 22 seldepth 39 multipv 1 score cp 88 lowerbound nodes 162474564 nps 22072349 hashfull 825 tbhits 0 time 7361 pv g1g7
info depth 22 currmove g1g7 currmovenumber 1
info depth 22 currmove a2a3 currmovenumber 2
info depth 22 currmove f1g2 currmovenumber 3
info depth 22 currmove c1b1 currmovenumber 4
info depth 22 currmove d4c6 currmovenumber 5
info depth 22 currmove c3d5 currmovenumber 6
info depth 22 currmove e4e5 currmovenumber 7
info depth 22 currmove b2b4 currmovenumber 8
info depth 22 currmove c3e2 currmovenumber 9
info depth 22 currmove d4e2 currmovenumber 10
info depth 22 currmove f3h5 currmovenumber 11
info depth 22 currmove g1g8 currmovenumber 12
info depth 22 currmove d4b3 currmovenumber 13
info depth 22 currmove d1e1 currmovenumber 14
info depth 22 currmove f3e2 currmovenumber 15
info depth 22 currmove d4f5 currmovenumber 16
info depth 22 currmove f1e2 currmovenumber 17
info depth 22 currmove g1g2 currmovenumber 18
info depth 22 currmove g1g3 currmovenumber 19
info depth 22 currmove f1h3 currmovenumber 20
info depth 22 currmove f3f5 currmovenumber 21
info depth 22 currmove f1c4 currmovenumber 22
info depth 22 currmove f1d3 currmovenumber 23
info depth 22 currmove c3a4 currmovenumber 24
info depth 22 currmove g1g6 currmovenumber 25
info depth 22 currmove d1d2 currmovenumber 26
info depth 22 currmove g1g4 currmovenumber 27
info depth 22 currmove f3g3 currmovenumber 28
info depth 22 currmove f3e3 currmovenumber 29
info depth 22 currmove f3f4 currmovenumber 30
info depth 22 currmove c1d2 currmovenumber 31
info depth 22 currmove b2b3 currmovenumber 32
info depth 22 currmove f3d3 currmovenumber 33
info depth 22 currmove c3b1 currmovenumber 34
info depth 22 currmove d1d3 currmovenumber 35
info depth 22 currmove f3g4 currmovenumber 36
info depth 22 currmove g1g5 currmovenumber 37
info depth 22 currmove h2h4 currmovenumber 38
info depth 22 currmove f3f2 currmovenumber 39
info depth 22 currmove h2h3 currmovenumber 40
info depth 22 currmove f3g2 currmovenumber 41
info depth 22 currmove f3h3 currmovenumber 42
info depth 22 currmove a2a4 currmovenumber 43
info depth 22 currmove g1h1 currmovenumber 44
info depth 22 currmove f3h1 currmovenumber 45
info depth 22 currmove c3b5 currmovenumber 46
info depth 22 currmove d4b5 currmovenumber 47
info depth 22 currmove f1b5 currmovenumber 48
info depth 22 currmove d4e6 currmovenumber 49
info depth 22 seldepth 40 multipv 1 score cp 76 upperbound nodes 219667711 nps 22015204 hashfull 915 tbhits 0 time 9978 pv g1g7 h7h5
info depth 22 currmove g1g7 currmovenumber 1
info depth 22 seldepth 40 multipv 1 score cp 92 lowerbound nodes 251511289 nps 21954546 hashfull 959 tbhits 0 time 11456 pv g1g7
info depth 22 currmove g1g7 currmovenumber 1
info depth 22 currmove a2a3 currmovenumber 2
info depth 22 currmove e4e5 currmovenumber 3
info depth 22 currmove f3h5 currmovenumber 4
info depth 22 currmove f1h3 currmovenumber 5
info depth 22 currmove b2b4 currmovenumber 6
info depth 22 currmove c3d5 currmovenumber 7
info depth 22 currmove f1g2 currmovenumber 8
info depth 22 currmove d4f5 currmovenumber 9
info depth 22 currmove c1b1 currmovenumber 10
info depth 22 currmove g1g8 currmovenumber 11
info depth 22 currmove d4e2 currmovenumber 12
info depth 22 currmove c3e2 currmovenumber 13
info depth 22 currmove f3e3 currmovenumber 14
info depth 22 currmove d4b3 currmovenumber 15
info depth 22 currmove d4c6 currmovenumber 16
info depth 22 currmove d1e1 currmovenumber 17
info depth 22 currmove c1d2 currmovenumber 18
info depth 22 currmove g1g6 currmovenumber 19
info depth 22 currmove f1e2 currmovenumber 20
info depth 22 currmove g1g2 currmovenumber 21
info depth 22 currmove g1g4 currmovenumber 22
info depth 22 currmove g1g5 currmovenumber 23
info depth 22 currmove g1g3 currmovenumber 24
info depth 22 currmove c3b1 currmovenumber 25
info depth 22 currmove f3f4 currmovenumber 26
info depth 22 currmove d1d2 currmovenumber 27
info depth 22 currmove g1h1 currmovenumber 28
info depth 22 currmove f3g3 currmovenumber 29
info depth 22 currmove f1d3 currmovenumber 30
info depth 22 currmove f3g2 currmovenumber 31
info depth 22 currmove b2b3 currmovenumber 32
info depth 22 currmove f3f2 currmovenumber 33
info depth 22 currmove f3e2 currmovenumber 34
info depth 22 currmove f3g4 currmovenumber 35
info depth 22 currmove f3h3 currmovenumber 36
info depth 22 currmove f3d3 currmovenumber 37
info depth 22 currmove f3f5 currmovenumber 38
info depth 22 currmove d1d3 currmovenumber 39
info depth 22 currmove f1c4 currmovenumber 40
info depth 22 currmove c3a4 currmovenumber 41
info depth 22 currmove f3h1 currmovenumber 42
info depth 22 currmove h2h4 currmovenumber 43
info depth 22 currmove a2a4 currmovenumber 44
info depth 22 currmove h2h3 currmovenumber 45
info depth 22 currmove d4b5 currmovenumber 46
info depth 22 currmove c3b5 currmovenumber 47
info depth 22 currmove f1b5 currmovenumber 48
info depth 22 currmove d4e6 currmovenumber 49
info depth 22 seldepth 40 multipv 1 score cp 90 nodes 253777006 nps 21954927 hashfull 961 tbhits 0 time 11559 pv g1g7 h7h5 c1b1 f8g7 f6g7 h8g8 e4e5 d6d5 f3f6 c7d8 a2a3 d8f6 e5f6 a8c8 d1e1 e8d8 e1e5 h5h4 e5h5 d8c7 f1g2 c7b6 d4f3 d7c6 f3e5 c5d7 e5d7 c6d7 h5h4 d7c6 b2b4 d5d4
info depth 23 currmove g1g7 currmovenumber 1
info depth 23 seldepth 40 multipv 1 score cp 97 lowerbound nodes 259743181 nps 21956312 hashfull 965 tbhits 0 time 11830 pv g1g7
info depth 23 currmove g1g7 currmovenumber 1
info depth 23 seldepth 40 multipv 1 score cp 104 lowerbound nodes 292653391 nps 21980876 hashfull 980 tbhits 0 time 13314 pv g1g7
info depth 23 currmove g1g7 currmovenumber 1
info depth 23 seldepth 40 multipv 1 score cp 114 lowerbound nodes 323515912 nps 21991428 hashfull 988 tbhits 0 time 14711 pv g1g7