Analysis by Rybka 4: 32-ply

 

31...Kf8 32.Rc2 Na4 33.Be6 Nc5 34.Bd5 Bd6 35.Rb2 f5 36.f3 exf3 37.Bxf3 Ke8 38.Bd5 Kd7 39.Kg2 Kc7
  -+  (-3.23)   Depth: 32   21:51:59  25649428kN, tb=37999

 

Analysis by Rybka 3 : 26-ply

 

1. -+ (-2.85): 31...Na4 32.Rb5 Kf8 33.Kg2 Nc5 34.Rb1 Ke8

2. -+ (-2.73): 31...Kf8 32.Rc2 Na4 33.Bf5

3. -+ (-2.60): 31...g6 32.Rc2 Nb5 33.Ra2 Kf8 34.Ra5 Nc3 35.Kf1 Ke8 36.Ra8 Bd6 37.Ra6 Ke7 38.Kg2 Bc7

4. -+ (-2.44): 31...Bf6 32.Kf1 Kf8 33.h4 g6 34.h5 gxh5 35.Rc2 Ke8 36.Kg2 Be5 37.Rd2 Ke7

 

After 31...Na4, 27-ply Rybka 3:

 

[-2.92] 32.Rb5 Kf8 33.Bd7 Nc5 34.Bc6 g6 35.Rb1 f5 36.f3 exf3 37.Bxf3 Ke8 38.Bd5 Kd7 39.Bg8 h6 40.Rd1+ Bd6 41.Bh7 Nxb7 42.Bxg6 Ke6 43.Bh5 Bc5+ 44.Kg2 Nd6 45.Rd2

 

 

White: David Levy

Black: Chess 4.4

Site: Minneapolis

Date: October 20, 1975

1.d3 e5 2.g3 Nc6 3.Bg2 d5 4.Nf3 Nf6 5.0-0 Be7 6.c3 0-0 7.b4 e4 8.dxe4 dxe4 9.Qxd8 Rxd8 10.Nfd2 Bf5 11.Nc4 Bg4 12.Re1 Bxe2 13.Nbd2 Bxc4 14.Nxc4 Rd3 15.Bb2 b5 16.Na3 Rb8 17.Rad1 Ne5 18.Rxd3 Nxd3 19.Re2 Nxb2 20.Rxb2 c5 21.bxc5 a6 22.Nc2 Rc8 23.Nb4 Rxc5 24.Nxa6 Rc6 25.Nb8 Rb6 26.a4 Rxb8 27.axb5 Rc8 28.b6 Rb8 29.Bh3 Nd5 30.b7 Nxc3 31.Bc8 Kf8 32.Rc2 Bf6 33.Kg2 Ke7 34.Rd2 g6 35.Rd7+ Kf8 36.Rd6 Be5 37.Rc6 f6 38.Rc4 Kf7 39.Kf1 f5 40.Rc5 Kf6 41.Rc6+ Kg5 42.Rc5 Bd4 43.Rc4 Bh8 44.Rc7 h6 45.Rc6 Be5 46.Rc5 Bg7 47.Rc7 Bf6 48.Rc6 Bh8 49.Rc5 Kg4 50.Rc6 Kh5 51.Rc5 Na4 52.Rb5 Bf6 53.h3 Nc3 54.Rc5 Bd4 55.Rc4 Bh8 56.Rc5 Kg5 57.g4 Bd4 58.Rc4 Be5 59.Rc5 Kf6 60.Rc6+ Kg7 61.Rc5 Bd4 62.Rc7+ Kf6 1/2-1/2