Stockfish finds the move in a fraction of a second, but considers the resulting position as favoring White by more than a pawn:Lyudmil Tsvetkov wrote:[D]1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1 b - - 0 25
The position is from a game of Botvinnik.
Could you (your engines) find the winning continuation (and there is only one, I think)?
I would appreciate engine analysis, even if some engines are unable to find the move.
Best, Lyudmil
Code: Select all
Searching: 1r1r2k1/2b1qp1p/b1p3p1/p1p1p3/2P1P3/1PN1BP2/P1Q3PP/R2R2K1 b - - 0 25
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
1 -0.63 00:00 229 Bb7
2 -0.53 00:00 473 Bb7 a3
3 -0.73 00:00 1313 Bb7 Qf2 Bd6
4 -0.75 00:00 1984 Bb7 Qf2 Bd6 Rac1
5 -0.99 00:00 7240 Bb7 Qf2 Rd4 Bxd4 cxd4 Na4
6 -0.85 00:00 20014 Rd4 Na4 Qd6 Rac1 Bc8 Bxd4 exd4
7 -1.13 00:00 28603 Rd4 Na4 Bc8 Bxd4 cxd4 Qd2 Bd7 c5 Qh4
8 -1.09 00:00 35775 Rd4 Na4 Bc8 Bxd4 cxd4 Qd2 Be6 Rac1 Kg7 c5
9 -1.03 00:00 56507 Rd4 Na4 Bc8 Bxd4 cxd4 Qd2 Kg7 c5 f5 exf5 Bxf5 Rac1
Qh4
10 -1.03 00:00 83490 Rd4 Rac1 Kg7 Na4 Rbd8 Bxd4 cxd4 Qd2 Qa3 g3 Bb7 c5
11 -1.03 00:00 103911 Rd4 Rac1 Kg7 Na4 Rbd8 Bxd4 cxd4 Qd2 Qa3 g3 Bb7 c5
12 -1.07 00:00 247401 Rd4 Rac1 Bd6 Na4 Qc7 Qf2 Rd8 Bxd4 cxd4 Qd2 Ba3 Rb1
Bb4
13 -1.35 00:01 1265K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 f6 Nd3 Kg7 c5 Ba6 Rac1 a4
bxa4 Ba5 Rb1 Rxb1 Rxb1 Bxd3 Qxd3 Qxc5
14 -1.35 00:01 1428K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 f6 Nd3 Kg7 c5 Ra8 Rac1 Be6
g3 Rb8 Kg2 a4 b4 a3
15 -1.31 00:01 1536K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 f6 Nd3 Kg7 c5 Ra8 Rac1 Be6
Rb1 Rb8 Rf1 Bf7 Rbd1 Be6 Qd2
16 -1.23 00:01 1670K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 Rac1 Qa3 Rd2
f5 Re1 fxe4 Rxe4 Bf5 Ree2 Bd6
17 -1.25 00:01 2594K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Qg5 Qe2 f6
Rab1 Ra8 Re1 Qh6 Qc2 Rb8 Qc1 Qxc1 Rexc1 h6
18 -1.25 00:01 2808K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Qg5 Qe2 f6
Rab1 Ra8 Re1 Qh6 Qc2 Rb8 Qc1 Qxc1 Rexc1 h6
19 -1.23 00:01 3389K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Ra8 Rab1 f6
Rf1 Qf7 Rfc1 Rb8 Re1 Qe7 Rbd1 Rd8 g3 a4 b4 a3 Kg2
20 -1.23 00:02 3770K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Ra8 Rab1 f6
Rf1 Qf7 Rfc1 Rb8 Re1 Qe7 Rbd1 Rd8 g3 a4 b4 a3 Kg2
21 -1.23 00:02 4386K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Ra8 Rab1 f6
Rf1 Qf7 Rfc1 Rb8 Re1 Qe7 Rbd1 Rd8 g3 a4 b4 a3 Kg2
22 -1.25 00:02 5686K Rd4 Na4 Bc8 Bxd4 cxd4 Nb2 Kg7 Nd3 Be6 c5 Ra8 Rab1 f6
Rd2 Rd8 Qc1 Rb8 Qa3 Bc4 Re1 Bb5 Red1 Bxd3 Rxd3
23 -1.31 00:03 10962K Rd4 Na4 Bc8 Rac1 Be6 Qe2 Kg7 Nb2 f6 Bxd4 cxd4 c5 Rb5
Nd3 Rb8 Qd2 Ra8 Qc2 Qf7 Nb2 Qe7 Qe2 Bf7 Na4 Rb8 Qa6
24 -1.31 00:03 14150K Rd4 Na4 Bc8 Rac1 Be6 Qe2 Kg7 Nb2 f6 Bxd4 cxd4 c5 Rb5
Nd3 Rb8 Qd2 Ra8 Qc2 Qf7 Nb2 Qe7 Qe2 Bf7 Na4 Rb8 Qa6
25 -1.31 00:04 16680K Rd4 Na4 Bc8 Rac1 Be6 Qe2 Kg7 Nb2 f6 Bxd4 cxd4 c5 Rb5
Nd3 Rb8 Qd2 Ra8 Qc2 Qf7 Nb2 Qe7 Qe2 Bf7 Na4 Rb8 Qa6
26 -1.29 00:05 27698K Rd4 Na4 Bc8 Rac1 Be6 Qe2 Kg7 Nb2 f6 Bxd4 cxd4 c5 Rb5
Nd3 Rb8 Qd2 Ra8 Qc2 Rf8 Qf2 Ra8 Nb2 Rb8 Qe2
27 -1.21 00:07 39432K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Kg8
Qf2 Kg7 Qe2 Kg8 Nb2 Rb5 Qc2 Rb8 Nd3 Kg7 Qb2 a4 b4
Ra8 Qa3 Qf7 Rd2 Bc4 Rdc2 Be6 Rb1 Qe8 Rd2 Bc4
28 -1.21 00:08 44787K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Kg8
Qf2 Kg7 Qe2 Bd8 Qc2 Bc7 g3 Ra8 Kg2 a4 b4 a3 Re1 Qf7
29 -1.21 00:09 51523K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Kg8
Qf2 Kg7 Qe2 Bd8 Qc2 Bc7 g3 Ra8 Kg2 a4 b4 a3 Re1 Qf7
30 -1.21 00:11 65115K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Kg8
Qf2 Kg7 Qe2 a4 bxa4 Qf7 Rb1 Ra8 Nb4 Rxa4 Qc2 Ra3 Rd2
Rc3
31 -1.21 00:13 81097K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Ra8
Nb2 Rb8 Qe2
32 -1.21 00:23 147958K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Qd8
Rb1 Qe7 g3 Qf7 Kg2 Ra8 Qc2 a4 bxa4 Bxa2 Rb7 Be6
33 -1.21 00:32 219039K Rd4 Na4 Bc8 Rac1 Be6 Bxd4 cxd4 c5 Bd8 Nb2 Kg7 Nd3
Bc7 Qd2 f6 Qc2 Ra8 Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Qd2 Qd8
Rb1 Qe7 g3 Qf7 Kg2 Ra8 Qc2 a4 bxa4 Bxa2 Rb7 Be6
34 -1.21 01:47 808203K Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Nb2
35 -1.21 01:59 897231K Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Rb1 Qf7 Qc2 Ra8 Rdc1 Qe8 Rf1
Qb8 Qd2 Bf7 Rfd1 Qb5 a4 Qb8
36 -1.21 02:09 969903K Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 Qe2 Rb5 Nd3 Rb8 Rf1 Ra8 Qc2 Bf7 Rcd1 Be6 Rf2
Rb8 Rb1 Bc8 Rc1 Be6 Rd1 Ra8 Rff1 Rb8 Rb1 Ra8 Rbd1
37 -1.21 02:41 1206M Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 Nd3
38 -1.23 03:56 1803M Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 g3 Rf8 Qe2 Ra8 Rf1 Qd8 Qd2 Qe7 Rf2 Rb8 Nd3
Rd8 Rd1 Ra8 Qc1 a4 b4 Qd8 Rfd2 a3 Kg2
39 -1.23 04:58 2275M Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 g3 Rf8 Qe2 Ra8 Rf1 Qd8 Qd2 Qe7 Rf2 Rb8 Nd3
Rd8 Qb2 Bc8 Qe2 Ba6 Qc2 Rb8 Rff1 Ra8 Rfd1 Bc8 Rf1
Ba6
40 -1.23 06:05 2801M Rd4 Na4 Kg7 Nb2 Bc8 Nd3 Be6 Rac1 f6 Bxd4 cxd4 c5 Ra8
Nb2 Rb8 g3 Rf8 Qe2 Ra8 Rf1 Qd8 Qd2 Qe7 Rf2 Rb8 Nd3
Rd8 Qe2 Re8 Nb2 Ra8 Na4 Qd8 Qd2 Bh3 Nb2 Qe7 Nd3 Bc8
f4 exf4 Nxf4 Qxe4 Rff1 a4 Rce1
Nodes: 2824103479
Nodes/second: 7661037
Best move: Rd4
Ponder move: Na4