TCEC Season 7 - Stage 2 Houdini - Chiron

http://tcec.chessdom.com/archive.php?se=7&st=2&ga=10

Analysis by Houdini 4 @ D=31/72, 40 300 MN
1. =  (0.18): 5.Nc3 Be6 6.g3 h6 7.Bg2 Nf6
2. =  (0.14): 5.Bg5 Be7 6.Bxe7 Nxe7 7.e3 0-0  <- Houdini played 5.Bg5 - eval 0.22 @ D=29, 6024 MN
3. =  (0.01): 5.a3 Nf6 6.Nc3 h6 7.e3 Nc6

5. Nc3 had better eval than Bg5 at any depth

Analysis by Komodo 8 @ 5400 MN, D=26
1. =  (0.10): 13.h3 h6 14.Rfe1 Nf6
2. =  (0.04): 13.Rfe1 g6 14.h3 Nf5
3. =  (0.03): 13.b4 b5 14.a4 Nb6
4. =  (0.03): 13.Rae1 g6 14.Rc1 Nf5
5. =  (0.03): 13.Rad1 g6 14.Qc2 Nf5  <- Houdini played @ D=28, 10 700 MN with eval +0.12

Analysis by Stockfish 181014 @ D=31/44, 4030 MN
1. =  (0.01): 13.b4 Nc8 14.a4 Nd6
2. =  (0.00): 13.Rae1 g6 14.e4 dxe4
3. =  (0.00): 13.Rfe1 g6 14.b4 Nf5
4. =  (0.00): 13.a3 g6 14.b4 Nb6
5. =  (0.00): 13.Nd2 Nc8 14.Nf3 Nd6
6. =  (0.00): 13.e4 dxe4 14.Nxe4 Qc7
7. =  (-0.01): 13.Rfd1 g6 14.Na4 Nf5
8. =  (-0.01): 13.Rac1 g6 14.Na4 Nf5
9. =  (-0.01): 13.Na4 Nc8 14.Qb3 Nd6
10. =  (-0.01): 13.Rad1 g6 14.Rc1 Nf5  <- Houdini played @ D=28, 10 700 MN with eval +0.12

Analysis by Stockfish 181014 @ D=29/40, 1 510 MN
1. =  (-0.01): 14.Rc1 Nf5 15.Na4 Nd6
2. =  (-0.01): 14.Na4 Rb8 15.Rc1 Nf5
3. =  (-0.02): 14.Ne5 Nf5 15.Nxd7 Qxd7
4. =  (-0.02): 14.e4 dxe4 15.Nxe4 Qc7
5. =  (-0.04): 14.Rfe1 Nf5 15.Rc1 Nd6
6. =  (-0.04): 14.Rde1 Nf5 15.Rc1 Kg7
7. =  (-0.04): 14.Qc2 Nf5 15.Rc1 Kg7
8. =  (-0.04): 14.Rb1 Nf5 15.Rbc1 Kg7
9. =  (-0.04): 14.Ra1 Nf5 15.Rac1 Kg7
10. =  (-0.04): 14.Qd2 Nf5 15.Rc1 Kg7
11. =  (-0.04): 14.Qe2 Nf5 15.Qc2 Nd6
12. =  (-0.04): 14.Qb1 Nf5 15.Qc2 Nd6
13. =  (-0.05): 14.Nd2 Nf5 15.Qc2 Kg7
14. =  (-0.05): 14.Rd2 Nb6 15.b3 Nf5
15. =  (-0.05): 14.Ne2 Nf5 15.Qb3 Nd6   <- Houdini played @ D=29, 8 800 MN with eval +0.02

Analysis by Komodo 8 64-bit 2:
1. =  (0.01): 14.Rfe1 Nf5 15.Re2 Nd6
2. =  (0.01): 14.Qc2 Nf5 15.Rfe1 Nd6
3. =  (0.01): 14.Na4 Nf5 15.Qb3 Nd6
4. =  (0.00): 14.Rc1 Nf5 15.Na4 Qe7
5. =  (0.00): 14.h3 Nf5 15.Qc2 Nd6
6. =  (0.00): 14.Qe2 Nf5 15.Qc2 a5
7. =  (0.00): 14.Qd2 Nf5 15.Qc2 a5
8. =  (0.00): 14.Qb1 Nf5 15.Qc2 Nd6
9. =  (0.00): 14.Nd2 Nf8 15.Na4 Nf5
10. =  (0.00): 14.a4 Nf5 15.Qc2 Rc8
11. =  (0.00): 14.Rde1 Nf5 15.Qc2
12. =  (0.00): 14.Ne2 Nf5 15.Qc2 Nd6   <- Houdini played @ D=29, 8 800 MN with eval +0.02

Analysis by Stockfish 181014 @ D=31/42, 2 220 MN
1. =  (-0.05): 17.Nd3 Qb6 18.Qc2 Qc7 19.Rfe1 a4
2. =  (-0.05): 17.Nd2 Qb6 18.Qc2 Kg7 19.Nd3 Qb5
3. =  (-0.05): 17.Rc1 Qb6 18.Qc2 a4 19.Nd3 Qb5
4. =  (-0.06): 17.Qa4 Kg7 18.Rc1 Nb6 19.Qc2 a4
5. =  (-0.07): 17.Qc2 Nf6 18.Rc1 Nfe4 19.Ne5 Kg7
6. =  (-0.07): 17.Rfe1 Kg7 18.Rc1 a4 19.Qb4 Qe7
7. =  (-0.08): 17.Qa3 Nb6 18.Nd2 Nbc4 19.Nxc4 Nxc4
8. =  (-0.09): 17.a4 Qb6 18.Qc2 Nb8 19.Rc1 Na6   <- Houdini played @ D=27, 1 950 MN with eval +0.02

Analysis by Stockfish 181014 @ D=30/44, 1600 MN
1. =  (-0.02): 55.Nd3 Nc4 56.Rbc3 Ra8
2. =  (-0.10): 55.Rc2 f5 56.Nd3 g5
3. =  (-0.12): 55.Qf1 f5 56.Nd3 g5
4. =  (-0.13): 55.Qc2 f5 56.Nd3 Nc4
5. =  (-0.13): 55.Qg4 Qxg4 56.hxg4 Kh6
6. =  (-0.25): 55.Qd2 f5 56.Nd3 Nc4   <- Houdini played @ D=27, 1 160 MN with eval +0.10
(Houdini +0.10 PV:  55. Qd2 Ra8 56. Qc2 Rb8 57. Rc3 Rd8 )

Analysis by Stockfish 181014 @ D=29, 1 300 MN
1. =  (-0.24): 59...Rf6 60.Rc3 Nd6
2. =  (-0.24): 59...Qh6 60.Rg1 f4
3. =  (-0.15): 59...Qe4 60.Rc3 Nd6
4. =  (-0.10): 59...Rfe8 60.g3 Qh6
5. =  (-0.10): 59...Rg7 60.g3 Qh6
6. =  (-0.10): 59...Qh5 60.g3 Nd6
7. =  (-0.10): 59...Rd8 60.g3 Qh6
8. =  (-0.10): 59...Rb8 60.g3 Qh6
9. =  (-0.06): 59...g4 60.Nf4 gxh3 <-  Chiron played @ D=32, 299 MN with eval -0.38
(Chiron -0.38 PV:  60. g3 Qxh3+ 61. Kg1 Qh6)

Chiron @59 lost advantage gained @55

Analysis by Stockfish 181014 @ D=30/50, 660 MN
1. =  (0.00): 62...Nd6 63.f3 Qg7
2. =  (0.00): 62...Rg7 63.Ne6 Qe4
3. =  (0.00): 62...Rfe8 63.Rc3 Nd6
.........
17. =  (0.24): 62...Rf6 63.Rd3 Rf8  <-  Chiron played @ D=33, 451 MN with eval -0.21)
(Chiron -0.21 PV:   63. Rc3 Rh6 64. f3 Qg5 )

Chiron @62 lost -0.24, but his eval was 0.45 higher

Analysis by Stockfish 181014 @ D=30/46, 1 300 MN
1. =  (0.15): 63...Nd6 64.f3 Qg5 65.b3 Rf8
2. +/=  (0.28): 63...Rf8 64.Nxh3 Rg7 65.b3 Qxe2
3. +/=  (0.37): 63...Kh8 64.b3 Nd6 65.Rc5 Ne4
4. +/=  (0.43): 63...Nb6 64.Rc5 Nxa4 65.Rxa5 Nb6
5. +/=  (0.46): 63...Rh6 64.f3 Qg5 65.Qf2 Nb6  <-  Chiron played @ D=31, 300 MN with eval -0.14)
(Chiron -0.14 PV:   64. f3 Qg5 @ 65. Qf2 Nd6)

Analysis by Stockfish 181014 @ D=30/48, 1 100 MN
1. +/=  (0.52): 64.f3 Qg5 65.Qf2 Nb6 66.Rc5 Rg7 67.Rxa5 Qd8
2. +/=  (0.32): 64.b3 Nd6 65.Rc5 Ne4 66.Rxa5 Ng5 67.Qxg4    <- Houdini played @ D=29, 2 638 MN with eval -0.02
(Houdini -0.02 PV:  64. b3 Nd6 65. Rc5 Ne4 66. Rxa5 Ng5 67. Kh1)

Analysis by Stockfish 181014 @ D=30
1. =  (0.00): 76.Qb6 Rg7 77.Ne5 Ne4 78.a5 Nd6 79.Kh2 h5 80.Nxc6
2. =  (0.00): 76.Ne5 Rg7 77.Qb6 Ne4 78.a5 Nd6 79.Kh2 h5 80.Nxc6
3. -+  (-1.48): 76.b5 Nf3 77.Nf4 Rg7 78.b6 Reg8     <- Houdini played @ D=27, 1 096 MN with eval -0.25
(Houdini -0.25 PV:  76. b5 Rg7 77. Ne5 Ne4)

Houdini spent 34 sec for #76 move and made blunder.
Next moves were easy win for Chiron

At low D, Houdini doesn't see 76 .. Nf3! and give 0.00 evaluation for 76. b5