Follow-up to see if the line is really the machine best line; in a new run with the same version, Black now tries to delay the inevitable by sacrificing a Knight both variations, but I don't see how it is better really. (Edit. I see Black gets the e-pawn in return for the piece)Eelco de Groot wrote: ↑Sat Dec 29, 2018 12:43 am Hi jon and Mike, as far as I can see both moves are interchangeable in what order they are played; transposing
[d]2b1q3/p7/1p1p2kb/nPpN3p/P1P1P2P/6P1/5R1K/5Q2 w - -
Engine: Kaissa IV search 041 (one thread, i7 6700, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
48 59:01 +12.42 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 e4 4.Qc3 Kh7
5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4
9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8
12.Rg6+ Kf7 13.Rg7+ Ke8 14.Rxe7+ (9.391.470.506) 2652
48 59:01 +12.42 1.e5 dxe5 2.Rf6+ Kg7 3.Qd3 e4 4.Qc3 Kh7
5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4
9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8
12.Rg6+ Kf7 13.Rg7+ Ke8 14.Rxe7+ (9.391.470.506) 2652
Code: Select all
I had made another version but somehow I must have broke something there, it was not very convincing:
50 367:41 +11.12 1.e5 dxe5 2.Nf6 Qe6 3.Qd3+ e4 4.Nxe4 Qd7 5.Nd6+ Kg7 6.Rf7+ Qxf7 7.Qc3+ Kg6 8.Nxf7 Kxf7 9.Qh8 Bf8 10.Qxh5+ Ke7 11.Qg5+ Ke8 12.h5 Be6 13.h6 Kf7 14.Qf4+ (54.346.811.203) 2463
49 367:41 +8.31 1.Rf6+ Kg7 2.Rxd6 Qe5 3.Rd8 Be6 4.Ra8 Kg6 5.Rxa7 Qb2+ 6.Qg2 Qxg2+ 7.Kxg2 Nxc4 8.Nxb6 Ne3+ 9.Kf2 Nd1+ 10.Ke2 Bg4+ 11.Ke1 Ne3 12.Nd5 Nc2+ 13.Kf1 Bg7 14.Nf4+ (54.346.811.203) 2463
Not transposing here! I have no idea why not, why it would do that with the changes I made in search_042 (So back to 041)
[d]2b1q3/p7/1p1p2kb/nPpN3p/P1P1P2P/6P1/5R1K/5Q2 w - -
Engine: Kaissa IV search_041 (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
47 380:16 +17.37 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 e4 4.Qc3 Kh7
5.Rd6 Bg7 6.Nf6+ Kh8 7.Qd2 Nxc4
8.Qg5 Ne5 9.Rd8 Nf3+ 10.Kh1 Nxg5
11.Rxe8+ Bf8 12.hxg5 Bf5 13.Rxf8+ Kg7
14.Re8 (68.407.744.617) 2998
47 380:16 +14.92 1.e5 Kg7 2.Rf6 Nxc4 3.Qxc4 Qxe5
4.Qc2 Qxf6 5.Nxf6 Kxf6 6.Qc3+ Kf5
7.Qf3+ Ke6 8.Qxh5 Bc1 9.Qe8+ Kd5
10.Qxc8 c4 11.Qa8+ Kc5 12.Qxa7 Be3
13.Qe7 Bd4 14.Qc7+ (68.407.744.617) 2998
__________________________________________________
48 633:30 +19.40 1.e5 Kg7 2.Rf6 Nxc4 3.Qxc4 Qxe5
4.Qc2 Qxf6 5.Nxf6 Kxf6 6.Qc3+ Ke7
7.Qh8 Be3 8.Qxc8 Bd4 9.Qf5 Kd8
10.Qf8+ Kd7 11.Qf7+ Kd8 12.Qxa7 c4
13.Qa8+ Ke7 14.Qe4+ (119.238.351.728) 3136
48 633:30 +16.16 1.Rf6+ Kg7 2.e5 Nxc4 3.Qxc4 Qxe5
4.Qc2 Qxf6 5.Nxf6 Kxf6 6.Qc3+ Ke7
7.Qh8 Be3 8.Qxc8 Bd4 9.Qf5 Bc3
10.Qe4+ Kd7 11.Qf3 Bb4 12.Qxh5 c4
13.Qg4+ Kc7 14.Qxc4+ (119.238.351.728) 3136