Test Position

[zullil]

[d]r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 8 34

This one is surprisingly difficult for Stockfish. See here for more.

[jdart]

That is a nice one. It is not so surprising this is difficult though. After .. Qb3, White is behind material, so is going to consider drawish moves good (the first ones considered seem to be Nf6+ or Nh6+). And once you've found that, forward pruning will start chopping away moves that lose material, including the winning sac, which isn't immediately forcing. It looks like Houdini 6 might be better than Stockfish on this, though.

--Jon

[Dann Corbit]

Searching: [d]r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Code: Select all

infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -3.07   00:00    4665  Rcc1 
 2   -4.00   00:00   24448  Rcc1 Ne5 
 3   -3.23   00:00   47330  Nh6+ Bxh6 Qxh6 Ne5 
 4   -2.19   00:00   64745  Nh6+ Bxh6 Qxh6 Ra7 Kg2 
 5   -1.33   00:00   84430  Kg2 Ne5 Nxe5 Bxe5 
 6   -0.26   00:00  135161  Kg2 Ne5 Nf6+ Bxf6 Rh1 
 7   -1.12   00:00  163332  Kg2 f5 gxf6 Nxf6 Nxf6+ Bxf6 Qh6 Ra7 Qxg6+ Rg7 
 8   -1.78   00:00  186638  Kg2 f5 gxf6 Nxf6 Nxf6+ Bxf6 Qh6 Ra7 Qxg6+ Rg7 
 9   -1.47   00:00  205302  Kg2 f5 gxf6 Nxf6 Nxf6+ Bxf6 Qh6 Ra7 Rh1 
10   -0.99   00:00  225940  Kg2 f5 gxf6 Nxf6 Nxf6+ Rxf6 Rd8+ Rf8 Rxf8+ Bxf8 
11   -1.70   00:00  280695  Kg2 f5 gxf6 Nxf6 Nxf6+ Bxf6 Qh6 Ra7 Rh1 Qxa4 Qxg6+ Rg7 Qh5 Rd8 Rxc6 
12   -1.28   00:00  322980  Kg2 f5 gxf6 Nxf6 Nxf6+ Bxf6 Qh6 Ra7 Rh1 Bd4 
13   -0.60   00:00  411612  Nh6+ Bxh6 Qxh6 Ne5 Kg2 Ng4 Qh4 Ba6 Qxg4 Qxa4 Rh1 Qb5 Bxc6 
14   +0.00   00:00  455591  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 Qg6+ 
15   -0.00   00:00  485429  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
16   -0.00   00:00  578616  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
17   -0.00   00:00  785247  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
18   -0.00   00:00   1202K  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
19   +0.00   00:00   1507K  Nh6+ Bxh6 Qxh6 c5 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
20   +0.18   00:00   3110K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Rfd8 Bxg6 Nf8 Rxd8 Rxd8 Bxf7+ Kxf7 g6+ Nxg6 Qh7+ Kf6 Qxb7 c4 Qc7 Rd1+ Ke2 Rd4 Qxa5 c3 Qc5 Rd2+ Ke3 
21   +0.00   00:00   3972K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 Re3 Nxf2+ Kh4 Nd3 Rxe6 Rae8 Rxg6+ fxg6 Qxg6+ Kh8 Bxd3 cxd3 Qh6+ Kg8 Qg6+ 
22   +0.04   00:00   5124K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 Rf1 Rfd8 f3 Ne5 Qh4 Nxf3 Qf4 e5 Qf6 e4 Rb1 Rd7 g4 
23   +0.00   00:00   6668K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 Re3 Rfd8 f3 Rab8 Kg2 Ne1+ Rxe1 Rd2+ Kf1 Rxc2 Rxe6 Rd2 Ke1 c3 Rxg6+ fxg6 Qxg6+ Kh8 Qf6+ Kg8 Qg6+ 
24   +0.00   00:01   9924K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kf1 
25   +0.00   00:01  11004K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 g4 Nxe1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
26   +0.00   00:01  19895K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Nf3 Rxe6 Nd2+ Kg1 Nf3+ 
27   +0.00   00:02  26234K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Nf3 Rxe6 Nd2+ Kg1 Nf3+ 
28   +0.00   00:03  38367K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Nf3 Rxe6 Nd2+ Kg1 Nf3+ 
29   +0.00   00:07  67448K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 g4 Rad8 Kg3 Nxe1 Bxg6 Rd3+ Bxd3 Nxd3 g6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
30   +0.00   00:09  87961K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kf1 Ne5 Re1 b3 Bxb3 Ba6+ Kg2 Bb7+ Kh3 c4 Bc2 Nd3 g4 Rad8 Kg3 Nxe1 Bxg6 Rd3+ Bxd3 Nxd3 g6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
31   +0.00   00:11 105650K  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
32   +0.00   00:12 122553K  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
33   +0.00   00:15 148413K  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
34   +0.00   00:18 178653K  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
35   +0.00   00:29 280561K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 Re1 b3 Bxb3 c4 Bc2 Nd3 g4 Rad8 Kg3 Nxe1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
36   +0.00   00:34 326911K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 Re1 b3 Bxb3 c4 Bc2 Nd3 g4 Rad8 Rb1 Nxf2+ Kg3 Ne4+ Kf4 Nc5 Ke3 Rfe8 Rb2 c3 Rb5 Rd5 Rxc5 Rxc5 Bxg6 fxg6 Qxg6+ Kf8 Qf6+ Kg8 
37   -0.00   00:57 530772K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 Re1 b3 Bxb3 c4 Bc2 Nd3 g4 Rad8 Kg3 Nxe1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
38   +0.00   00:58 543366K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 f4 Bf3 fxe5 Bxd1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
39   +0.00   01:05 612118K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 f4 Bf3 fxe5 Bxd1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 
40   +0.00   01:36 901087K  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 f4 Bf3 fxe5 Bxd1 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 Qxe6+ Kh7 Qh6+ Kg8 Qe6+ 
41   +0.00   02:45   1573M  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Qh6+ Kg8 Qg6+ 
42   +0.00   03:14   1849M  Nh6+ Bxh6 Qxh6 c5 Rdc1 Ba6 Bxg6 fxg6 Qxg6+ Kh8 Rc3 bxc3 Qh6+ Kg8 Qg6+ 
43   +0.00   03:29   1990M  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 f4 Bf3 fxe5 Bxd1 Bxd1 c4 Bc2 Ra7 Kg2 Rb8 Bxg6 fxg6 Qxg6+ Rg7 Qxe6+ Kh8 Qh6+ Kg8 Qd6 Rbb7 Qd5+ Kh8 Qxc4 b3 Qc8+ Kh7 Qf5+ Rg6 Qf3 Rb8 Qf7+ Rg7 Qf5+ Kh8 e6 b2 e7 Rxe7 Qf6+ Kg8 Qg6+ Kf8 Qf6+ 
44   +0.00   03:43   2123M  Nh6+ Bxh6 Qxh6 c5 Kg2 Qxc2 Bxc2 Bb7+ Kh3 Ne5 f4 Bf3 fxe5 Bxd1 Bxd1 c4 Bc2 Ra7 Kg2 Rb8 Bxg6 fxg6 Qxg6+ Rg7 Qxe6+ Kh8 Qd6 Re8 Qh6+ Kg8 Qc6 Rxe5 Qxc4+ Kh7 Qc2+ Kh8 Qc8+ Kh7 Qc2+ 
45   +0.55   06:48   3861M  Nf6+ Nxf6 gxf6 e5 Rd6 Be6 Rcxc6 Rae8 Rc7 Bxf6 Qxf6 Rc8 Ra7 Qc4 Bxg6 Qg4 Rxe6 Rc1+ Kg2 Qxg6 Qxg6+ fxg6 Rxg6+ Kh8 Rxa5 Rc2 Kh3 Rfxf2 Rb6 e4 Re5 Rb2 Rxe4 b3 Re7 Kg8 Ra7 Rf7 Ra8+ Rf8 Ra5 Rb1 Rg5+ Kh7 a5 Ra8 Rb7+ Kh8 Rh5+ Kg8 Rc5 Ra1 Rbb5 Ra7 Kg4 Ra4+ Kf3 Rf7+ Ke2 
46  +57.58   12:48   7402M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kh2 Bd7 Qg8+ Ke7 Qxg7 Qxc2 Bxc2 Rd4 Bxg6 Rf8 Ra7 c5 Ng8+ Kd6 Qxf8+ Kd5 Rxd7+ Kc4 Rxd4+ Kxd4 Qxf7 Kc3 Qxe6 c4 Nf6 Kb2 Qxc4 b3 
47  +63.24   12:54   7475M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kh2 Bd7 Qg8+ Ke7 Qxg7 Qxc2 Bxc2 Rd4 Bxg6 Kd8 Rxd7+ Rxd7 Qf8+ Kc7 Qxa8 fxg6 Qxa5+ Kc8 Qa8+ Kc7 Qa7+ Kd6 Qxd7+ Kc5 Qxe6 Kd4 Qxc6 b3 Ne4 b2 Qf6+ Kxe4 Qxb2 Kd5 Qb5+ Ke4 Qb7+ Kd3 Qb1+ Kc3 Qxg6 Kb4 
48  +73.07   12:58   7518M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kh2 Bd7 Qg8+ Ke7 Qxg7 Qxc2 Bxc2 Rd4 Bxg6 Kd8 Rxd7+ Rxd7 Qf8+ Kc7 Qxa8 fxg6 Qxa5+ Kc8 Qa8+ Kc7 Qa7+ Kd6 Qxd7+ Kc5 Ne4+ Kc4 Qxe6+ Kd4 Qxc6 b3 Qxg6 b2 Qb6+ Ke5 Qxb2+ Ke6 Qb4 Kd7 Qb8 Ke7 Qc7+ Ke6 
49    #157   13:00   7545M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qxa4 Rc1 Qa3 Rd1 Qc3 Rxd7 Qa1+ Kg2 Qxf6 Qxf6 Rad8 Rxd8 Rxd8 Qxd8+ Kg7 Bxc6 b3 Qxa5 Kf6 Qd8+ Kg7 Qd4+ Kf8 Qf6 b2 Qxb2 Ke7 Qb4+ Kf6 Qd6 g5 Qf8 g4 Be8 Kf5 Bxf7 
50     #24   13:09   7650M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qxa4 Rc1 Qa3 Rd1 Qc3 Rxd7 Qxf6 Qxf6 Rad8 Rxd8 Rxd8 Qxd8+ Kg7 Bxc6 b3 Qxa5 Kf6 Qd8+ Kg7 Kg2 b2 Qd4+ Kf8 Qxb2 Ke7 Qb4+ Kf6 Qc5 g5 Be8 e5 Qd6+ Kg7 Qe7 e4 Qxf7+ Kh8 Bd7 g4 Qf8+ Kh7 Bf5+ 
51     #24   13:12   7688M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qxa4 Rc1 Qa3 Rd1 Qc3 Rxd7 Qxf6 Qxf6 Rad8 Rxd8 Rxd8 Qxd8+ Kg7 Bxc6 b3 Qxa5 Kf6 Qd8+ Kg7 Kg2 b2 Qd4+ Kf8 Qxb2 Ke7 Qb4+ Kf6 Qc5 g5 Be8 e5 Qd6+ Kg7 Qe7 e4 Qxf7+ Kh8 Bd7 g4 Qf8+ Kh7 Bf5+ 
52     #24   13:14   7720M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qxa4 Rc1 Qa3 Rd1 Qc3 Rxd7 Qxf6 Qxf6 Rad8 Rxd8 Rxd8 Qxd8+ Kg7 Bxc6 b3 Qxa5 Kf6 Qd8+ Kg7 Kg2 b2 Qd4+ Kf8 Qxb2 Ke7 Qb4+ Kf6 Qc5 g5 Be8 e5 Qd6+ Kg7 Qe7 e4 Qxf7+ Kh8 Bd7 g4 Qf8+ Kh7 Bf5+ 
53     #24   13:18   7763M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qxa4 Rc1 Qa3 Rd1 Qc3 Rxd7 Qxf6 Qxf6 Rad8 Rxd8 Rxd8 Qxd8+ Kg7 Bxc6 b3 Qxa5 Kf6 Qd8+ Kg7 Kg2 g5 Qxg5+ Kf8 Qf6 b2 Qd8+ Kg7 Be4 b1=Q Bxb1 e5 Qe7 e4 Bxe4 Kg8 Bd5 Kg7 Qxf7+ Kh6 Be4 Kg5 Qg6+ 
54     #18   14:05   8342M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qa3 Qg5 Qa1+ Kg2 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Kg2 c5 Qxa6 Kg7 Rh1 Re8 Qd6 b3 Bd5 Re6 Bxe6 Kf6 Bxb3+ Kf5 Bxf7 g5 Qg6+ Kg4 f3+ 
55     #18   14:33   8687M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kh2 Bd7 Bxg6 e5 Nxd7+ Rxd7 Rxd7 Qe6 Rxf7+ Qxf7 Bxf7 Kxf7 Qf5+ Kg8 Qe6+ Kh8 g6 b3 Rxc6 Bh6 Qh3 Kg8 Qxh6 b2 Qh7+ Kf8 Qf7+ 
56     #18   14:37   8743M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kh2 Bd7 Bxg6 e5 Nxd7+ Rxd7 Rxd7 Qe6 Rxf7+ Qxf7 Bxf7 Kxf7 Qf5+ Kg8 Qe6+ Kh8 g6 b3 Rxc6 Bh6 Qh3 Kg8 Qxh6 b2 Qh7+ Kf8 Qf7+ 
57     #17   16:11   9851M  Rxd7 Re8 Rc7 Kf8 Nf6 Rd8 Qh7 Rd1+ Kg2 Bd7 R2xc6 Qxa4 Qg8+ Ke7 Qxa8 Bxf6 Rxd7+ Rxd7 gxf6+ Kxf6 Qh8+ Ke7 Qh4+ f6 Qh7+ Kf8 Rc8+ Rd8 Rxd8+ Qe8 Bxg6 Qxd8 Qf7+ 
58     #17   16:18   9929M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kg2 Bd7 R2xc6 Qxa4 Qg8+ Ke7 Qxa8 Bxf6 Rxd7+ Rxd7 gxf6+ Kxf6 Qh8+ Ke7 Qh4+ f6 Qh7+ Kf8 Rc8+ Rd8 Rxd8+ Qe8 Bxg6 Qxd8 Qf7+ 
59     #17   16:24  10004M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kg2 Bd7 R2xc6 Qxa4 Qg8+ Ke7 Qxa8 Bxf6 Rxd7+ Rxd7 gxf6+ Kxf6 Qh8+ Ke7 Qh4+ f6 Qh7+ Kf8 Rc8+ Rd8 Rxd8+ Qe8 Bxg6 Qxd8 Qf7+ 
60     #17   16:32  10097M  Rxd7 Re8 Nf6+ Kf8 Rc7 Rd8 Qh7 Rd1+ Kg2 Bd7 R2xc6 Qxa4 Qg8+ Ke7 Qxa8 Bxf6 Rxd7+ Rxd7 gxf6+ Kxf6 Qh8+ Ke7 Qh4+ f6 Qh7+ Kf8 Rc8+ Rd8 Rxd8+ Qe8 Bxg6 Qxd8 Qf7+ 
61     #17   16:32  10100M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qb1+ Kg2 Qa1 Qg5 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Rd1 b3 Kg2 c5 Qxa6 Kg7 Rd7 Kg8 Qf6 b2 Bd5 Kh7 Bxf7 b1=Q Bxg6+ Kh6 Rh7+ 
62     #17   16:33  10101M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qb1+ Kg2 Qa1 Qg5 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Rd1 b3 Kg2 c5 Qxa6 Kg7 Rd7 Kg8 Qf6 b2 Bd5 Kh7 Bxf7 b1=Q Bxg6+ Kh6 Rh7+ 
63     #17   16:33  10107M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qb1+ Kg2 Qa1 Qg5 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Rd1 b3 Kg2 c5 Qxa6 Kg7 Rd7 Kg8 Qf6 b2 Bd5 Kh7 Bxf7 b1=Q Bxg6+ Kh6 Rh7+ 
64     #17   16:35  10130M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qb1+ Kg2 Qa1 Qg5 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Rd1 b3 Kg2 c5 Qxa6 Kg7 Rd7 Kg8 Qf6 b2 Bd5 Kh7 Bxf7 b1=Q Bxg6+ Kh6 Rh7+ 
65     #17   16:40  10186M  Rxd7 Bxd7 Nf6+ Bxf6 gxf6 Qb1+ Kg2 Qa1 Qg5 Qxf6 Qxf6 e5 Rc1 Bh3+ Kxh3 Ra6 Rd1 b3 Kg2 c5 Qxa6 Kg7 Rd7 Kg8 Qf6 b2 Bd5 Kh7 Bxf7 b1=Q Bxg6+ Kh6 Rh7+ 
Nodes: 10186693554
Nodes/second: 10186662
Best move: Rxd7

Another interesting position mentioned in a different thread nearby:
Searching: [d]r3r1k1/1b1nbp1p/1qn1p3/1p1pPp2/p2P4/P2BNN2/1P1Q1BPP/R4RK1 w - - 0 1

Code: Select all

infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -0.28   00:00   46136  Nc2 
 2   +0.32   00:00  143789  Nc2 Kh8 
 3   -0.07   00:00  170718  Nc2 Nf8 g3 
 4   -0.15   00:00  191011  Nc2 Nf8 g3 Ng6 
 5   -0.13   00:00  207783  Nc2 Nf8 Rac1 Ng6 g3 
 6   -0.21   00:00  244765  Nc2 Kh8 Rac1 Rac8 Qe2 Ba6 
 7   -0.10   00:00  261203  Nc2 Nf8 Rac1 Ng6 Qh6 b4 Nxb4 
 8   -0.17   00:00  281626  Nc2 Nf8 Rac1 Ng6 g3 b4 Nxb4 
 9   +0.00   00:00  317142  Nc2 Nf8 Rac1 Ng6 Be3 Rac8 Qe2 Ba6 
10   -0.12   00:00  370855  Nc2 Kh8 Be3 Rg8 Qf2 Rac8 Rac1 Ba6 Bf4 Rg6 Be3 
11   -0.08   00:00  493221  Nc2 Kh8 Rac1 Rg8 Nb4 Nxb4 axb4 Bc6 Be3 Rac8 
12   -0.16   00:00  650830  Nc2 Kh8 Rfc1 Rg8 g3 b4 axb4 Nxb4 Nxb4 Bxb4 Qc2 
13   -0.15   00:00   1143K  Nc2 Kh8 Ng5 Kg7 Nf3 Rac8 Nb4 Nxb4 axb4 Kg8 Rac1 Bc6 g3 Red8 Be3 
14   -0.21   00:00   2356K  Nc2 Kh8 Ng5 Bxg5 Qxg5 Rg8 Qh5 Rg6 Qe2 Ba6 g3 b4 axb4 Bxd3 Qxd3 
15   -0.39   00:00   3473K  Nc2 Kh8 Nb4 Na5 Qe2 Nc4 Kh1 Rac8 Rac1 Rg8 Rg1 Qd8 Na2 f4 Nc3 Bc6 h3 Rg7 
16   -0.44   00:00   5366K  Nc2 Kh8 Rab1 Rg8 b3 axb3 Rxb3 Ba6 Bg3 Na5 Rbb1 Nc4 Bxc4 dxc4 a4 Rg6 axb5 Bxb5 
17   +0.18   00:01   8613K  Bxf5 exf5 Nxf5 Bf8 Qf4 f6 Qg4+ Kh8 Rae1 Na5 e6 Rxe6 Nh6 Bxh6 Rxe6 Qd8 
18   +0.06   00:01  10290K  Bxf5 exf5 Nxf5 Kh8 Qh6 Rg8 Qh5 Raf8 Rac1 Qd8 Be3 Na5 Bh6 Nb3 Bxf8 Bxf8 Qxf7 Nxc1 Rxc1 
19   -0.10   00:01  13186K  Bxf5 exf5 Nxf5 Kh8 Qh6 Rg8 Be3 Rae8 Rac1 Na5 Qxb6 Nxb6 Nxe7 Rxe7 Bg5 Rxg5 Nxg5 Kg8 Rc5 Nbc4 Rxb5 h6 Nf3 Nb3 Rf2 Bc6 Rb8+ Kg7 h4 Rc7 g3 Bd7 
20   +0.00   00:01  15925K  Bxf5 exf5 Nxf5 Kh8 Qh6 Rg8 Be3 Rae8 Rac1 f6 Qh5 fxe5 Nh6 Rg6 Nf7+ Kg8 Nh6+ 
21   -0.00   00:01  16224K  Bxf5 exf5 Nxf5 Kh8 Qh6 Rg8 Be3 Rae8 Rac1 f6 Qh5 fxe5 Nh6 Rg6 Nf7+ Kg8 Nh6+ 
22   -0.00   00:02  17598K  Bxf5 exf5 Nxf5 Kh8 Qh6 Rg8 Be3 Rae8 Rac1 f6 Qh5 fxe5 Nh6 Rg6 Nf7+ Kg8 Nh6+ 
23   +0.00   00:02  24065K  Bxf5 exf5 Nxf5 Kh8 Ng5 Nd8 Nxe7 Rxe7 Bh4 Rxe5 Nxf7+ Nxf7 Rxf7 Re4 Bg5 Bc6 Raf1 Qxd4+ Qxd4+ Rxd4 Rxd7 Bxd7 Bf6+ Kg8 Bxd4 Rf8 Rxf8+ Kxf8 Kf2 Kf7 Ke3 Be6 Be5 Kg6 g3 Kf5 Kd4 
24   +0.57   00:03  34090K  Bxf5 exf5 Nxf5 Kh8 Ng5 Bxg5 Qxg5 Rg8 Qh5 Raf8 Nd6 f5 Nf7+ Rxf7 Qxf7 Nxd4 Kh1 Nxe5 Qe7 Qe6 Qxb7 Rg7 Qb8+ Rg8 Qc7 Rg7 Qd8+ Rg8 Qh4 
25   +0.31   00:09  80598K  Bxf5 exf5 Nxf5 Kh8 Ng5 Bxg5 Qxg5 Rg8 Qh5 Rg6 Nd6 Rf8 Qf5 Ncb8 Nxf7+ Kg8 Be3 Qe6 Qxe6 Rxe6 Nh6+ Kg7 Nf5+ Kg8 Rac1 Kh8 Nh6 Rxf1+ Rxf1 Kg7 Nf5+ Kg6 Nd6 Bc6 Nf7 Re7 
26   +0.77   00:13 113912K  Bxf5 exf5 Nxf5 Kh8 Rae1 Ba6 e6 fxe6 Rxe6 Bf8 Rfe1 Rxe6 Rxe6 b4 Ng5 Qb5 Nf7+ Kg8 N5h6+ Bxh6 Nxh6+ Kh8 Qc1 Rf8 Rxc6 bxa3 bxa3 Qe2 Rc2 Qe4 h3 Bc4 Ng4 Qd3 Ne3 Qe4 Kh2 
27   +0.90   00:19 169994K  Bxf5 exf5 Nxf5 Kh8 Rae1 b4 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qg6 Re7+ Kg8 Rxd7 bxa3 bxa3 Bc6 Re7 Rf8 Bh6 Rf7 Rxf7 Kxf7 h4 Bd7 Kh2 Qf5 Bf4 Qg6 
28   +0.70   00:42 363006K  Rae1 Nf8 Nh4 Bxh4 Bxh4 Nxd4 Bf6 Ng6 Qd1 Qc5 Qh5 Rac8 g4 fxg4 Qxg4 Nf5 Qh3 Rc7 Bxf5 exf5 Qh6 Qf8 Nxf5 Qxh6 Nxh6+ Kf8 Nf5 Rc2 Nd6 Bc6 Nxe8 Kxe8 
29   +0.83   00:51 432609K  Rae1 b4 Bxf5 exf5 Nxf5 Kh8 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qg6 Re7+ Kg8 Rxd7 Qb1+ Qc1 Qxc1+ Bxc1 Bc6 Rc7 bxa3 bxa3 Be8 Bh6 Rb8 Rg7+ Kh8 Ra7 Rb2 Ra8 Re2 h3 Kg8 Bf4 Kf7 Be5 Ra2 Bd6 Bb5 Kh2 Rd2 Bc5 Kg6 
30   +0.75   00:54 456687K  Rae1 b4 Bxf5 exf5 Nxf5 Kh8 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qg6 Re7+ Kg8 Rxd7 Qb1+ Qc1 Qxc1+ Bxc1 Bc6 Rc7 bxa3 bxa3 Be8 Bh6 Rb8 Rg7+ Kh8 Ra7 Kg8 h3 Rb2 Rg7+ Kh8 Kh2 Ra2 Rg5 Bg6 Rxd5 Kg8 Rd8+ Kf7 Kg3 Rxa3+ Kf4 
31   +1.06   01:05 562382K  Rae1 b4 Bxf5 exf5 Nxf5 Kh8 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qg6 Re7+ Kg8 Rxd7 Qb1+ Qc1 Qxc1+ Bxc1 Bc6 Rc7 bxa3 bxa3 Be8 Bh6 Rb8 Rg7+ Kh8 h4 Bg6 Ra7 Kg8 Rxa4 Be4 Bf4 Rb2 g3 Rb1+ Kf2 Rb2+ Ke1 
32   +1.00   01:14 638142K  Rae1 b4 Bxf5 exf5 Nxf5 Kh8 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qg6 Re7+ Kg8 Rxd7 Qb1+ Qc1 Qxc1+ Bxc1 Bc6 Rc7 bxa3 bxa3 Be8 Bh6 Rb8 Rg7+ Kh8 h4 Rb3 Re7 Bg6 Ra7 Kg8 Rxa4 Be4 Bf4 Rb1+ Kf2 Rb2+ Ke3 Bxg2 Ra8+ Kf7 Ra7+ Ke6 
33   +0.95   02:24   1232M  Rae1 b4 Bxf5 exf5 Nxf5 Kh8 Nxe7 Nxe7 Ng5 Nf5 Nxf7+ Kg8 Be3 Rf8 Rxf5 Rxf7 Rxf7 Kxf7 e6+ Qxe6 Bg5 Qd6 Re7+ Kg8 Qd3 Qg6 Qxg6+ hxg6 Rxd7 Ba6 Rxd5 Rf8 h4 Rf1+ Kh2 Rf2 axb4 Rxb2 Ra5 Bb7 Rxa4 Rxg2+ Kh3 Rb2 Kg4 Kf7 Bf4 Ke6 Be5 Kd5 
34   +1.68   03:48   1953M  Kh1 Qa5 Qc1 Rac8 Nxf5 exf5 Qf4 Nf8 Qxf5 Nd8 Be3 Rc6 Ng5 Bc8 Qf3 Bxg5 Bxg5 Rg6 Bxd8 Qxd8 Qxf7+ Kh8 Bxg6 hxg6 Rf6 Qd7 Qxd7 Bxd7 Rd6 Be6 Rf1 Kg8 Rf6 Kh8 Rb6 Kg8 Rxb5 g5 Ra5 
35   +0.67   05:37   2889M  Kh1 Kh8 Nxf5 exf5 Bxf5 Nf8 Qh6 Bc8 Bd3 Ra6 Qh5 Nd8 Be3 Qb7 Ng5 Bxg5 Bxg5 Rg6 Rf6 Nde6 Bxg6 Nxg6 Be3 Ng7 Qh6 Re6 Bg5 Ne7 Rxe6 Bxe6 Bf6 Nf5 Qg5 h6 Bxg7+ Nxg7 Qxh6+ Kg8 Rf1 Qc8 Rc1 Qd8 Qf4 Nf5 
36   +0.93   05:43   2938M  Kh1 Kh8 Nxf5 exf5 Bxf5 Bc8 Qh6 Nf8 Bd3 Ra6 Qh5 Nd8 Be3 Qb7 Ng5 Bxg5 Bxg5 Rg6 Rf6 Nde6 Bxg6 Nxg6 h4 Nxg5 Qxg5 Be6 h5 Nf8 Raf1 Qe7 R1f3 Nd7 Rg3 Qf8 h6 Rc8 Rf2 Rc4 Qf4 Qd8 b3 axb3 Rxb3 Nc5 Qg3 Qf8 Qg7+ Qxg7 hxg7+ Kxg7 dxc5 Rxc5 Kh2 d4 Rg3+ Kh6 Rf4 Rxe5 Rxd4 
37   +1.42   06:59   3595M  Kh1 b4 g4 bxa3 bxa3 Ncxe5 Nxe5 Nxe5 dxe5 Bg5 Ng2 Bxd2 Bxb6 fxg4 Bd4 Rec8 Bxh7+ Kxh7 Rxf7+ Kg6 Rxb7 Rc1+ Rxc1 Bxc1 Rc7 Bg5 Kg1 Rb8 Ra7 Rb3 Rxa4 Kf5 Ra8 g3 hxg3 Rxg3 Kf2 Rd3 Be3 Bxe3+ Nxe3+ Kxe5 a4 Ke4 Nf1 Rf3+ Kg2 
38   +2.89   10:36   5454M  Ng4 Kh8 Nh6 Rf8 Rae1 b4 Ng5 bxa3 bxa3 Bxg5 Qxg5 Ba6 Bxa6 Rxa6 Qh5 f6 Re3 Qd8 Nf7+ Rxf7 Qxf7 Qe7 Qxe7 Nxe7 Rb1 f4 Rf3 Ra7 Rxf4 Ng6 Rf3 f5 Be3 Kg7 Rh3 f4 Bd2 Kg8 
39   +3.29   13:58   7199M  Ng4 Kh8 Nh6 Rf8 Rae1 f6 exf6 Rxf6 Ne5 Qa5 Nhf7+ Kg8 Qg5+ Rg6 Nxc6 Bxg5 Nxa5 Rxa5 Nxg5 Rxg5 Rxe6 Nf8 Re8 Rg7 Bxf5 Ra8 Rxa8 Bxa8 Rc1 Bb7 Bd3 Nd7 Bxb5 Nb6 Bg3 Rg4 Rc7 Rg7 Rxg7+ Kxg7 Kf2 Kf6 Bd3 Nc4 Bf4 Ke6 Bxh7 
40   +3.38   16:40   8581M  Ng4 
Nodes: 8581104390
Nodes/second: 8580915
Best move: Ng4

[mwyoung]

[d]r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 8 34

This one is surprisingly difficult for Stockfish. See here for more.

Stockfish found this one pretty easy.

New game Line
r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Analysis by Stockfish 270619 64 POPCNT:

34.Rxd7 Bxd7 35.Nf6+ Bxf6 36.gxf6 Qxa4 37.Rc1 Qa3 38.Rd1 Qb2 39.Rxd7 Qa1+ 40.Kg2 Qxf6 41.Qxf6 Rad8 42.Rxd8 Rxd8 43.Qxd8+ Kg7 44.Bxc6 b3 45.Qxa5 Kf6 46.Qc3+ Ke7 47.Qb4+ Kf6 48.Qxb3 Ke7 49.Qb4+ Kf6 50.Qc5 g5 51.Be8 e5 52.Qd6+ Kg7 53.Qe7 g4 54.Qxf7+ Kh8 55.Bc6 e4 56.Qf8+ Kh7 57.Bxe4#
White mates: +- (#24) Depth: 48/48 00:02:43 6516MN, tb=10290446
(, 28.06.2019)

[peter]

Hi Louis!

[d]r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 8 34

Good one!

Here's komodo with 24 threads of 12x3GHz CPU and 32 Gb hash:

r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Analysis by Komodo 13.02 64-bit:

Code: Select all

34.Rcc1 Ra6 
  -+  (-2.77 --)   Depth: 7   00:00:00  3kN
...
34.Kg2 f5 
  -/+  (-1.44 --)   Depth: 13   00:00:00  192kN
34.Nh6+ Bxh6 35.Qxh6 
  -/+  (-1.09 ++)   Depth: 13   00:00:00  200kN
34.Nh6+ Bxh6 35.Qxh6 
  -/+  (-0.79 ++)   Depth: 13   00:00:00  201kN
34.Nh6+ Bxh6 35.Qxh6 
  =/+  (-0.37 ++)   Depth: 13   00:00:00  205kN
34.Nh6+ Bxh6 35.Qxh6 c5 36.Bxg6 fxg6 37.Qxg6+ Kh8 38.Qh6+ Kg8 39.Qg6+ 
  =  (0.00)   Depth: 13   00:00:00  234kN
34.Nh6+ Bxh6 35.Qxh6 c5 36.Bxg6 fxg6 37.Qxg6+ Kh8 38.Qh6+ Kg8 39.Qg6+ 
  =  (0.00)   Depth: 14   00:00:00  275kN
...
34.Nh6+ Bxh6 35.Qxh6 c5 36.Kg2 Qxc2 37.Bxc2 Bb7+ 38.Kh3 Ne5 39.Re1 b3 40.Bxb3 c4 41.Bc2 Nd3 42.Kh2 Nxe1 43.Bxg6 fxg6 44.Qxg6+ Kh8 45.Qh6+ Kg8 46.Qg6+ 
  =  (0.00)   Depth: 36   00:01:18  2986MN
34.Rxd7 Bxd7 35.Nf6+ 
  =  (0.06 ++)   Depth: 36   00:01:48  3666MN
34.Rxd7 Bxd7 35.Nf6+ 
  =  (0.14 ++)   Depth: 36   00:01:48  3667MN
34.Rxd7 Bxd7 35.Nf6+ 
  =  (0.25 ++)   Depth: 36   00:01:48  3670MN
34.Rxd7 Bxd7 35.Nf6+ 
  +/=  (0.40 ++)   Depth: 36   00:01:48  3672MN
...
34.Rxd7 Bxd7 35.Nf6+ 
  +-  (5.25 ++)   Depth: 36   00:01:52  3776MN

Took me too long to wait for mating-score, stopped after 10 minutes without next output- line.

Houdini Tactical took about 1' at same hardware at a single try too.

[peter]

Here's komodo with 24 threads of 12x3GHz CPU and 32 Gb hash:

r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Analysis by Komodo 13.02 64-bit:

...
34.Rxd7 Bxd7 35.Nf6+
= (0.06 ++) Depth: 36 00:01:48 3666MN
...
34.Rxd7 Bxd7 35.Nf6+
+- (5.25 ++) Depth: 36 00:01:52 3776MN[/code]

Not bad neither:

r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Analysis by Laser 1.7:

Code: Select all

34.Rcd2 Ne5 35.Nxe5 Bxe5 36.Bxc6 Ra7 37.Rd3 
  -+  (-4.10)   Depth: 7/12   00:00:00  43kN
...
34.Nf6+ 
  -/+  (-1.39 ++)   Depth: 12/26   00:00:01  1310kN, tb=1
34.Nh6+ 
  -/+  (-1.19 ++)   Depth: 12/26   00:00:01  1545kN, tb=1
...
34.Nh6+ Bxh6 35.Qxh6 c5 36.Bxg6 fxg6 37.Qxg6+ Kh8 38.Qh6+ Kg8 39.Qg6+ 
  =  (0.00)   Depth: 36/73   00:01:46  1107MN, tb=101
34.Rxd7 
  =  (0.06 ++)   Depth: 37/73   00:01:58  1259MN, tb=112
...
34.Rxd7 
  +/=  (0.57 ++)   Depth: 37/73   00:02:07  1365MN, tb=115
...
34.Rxd7 Bxd7 35.Nf6+ Bxf6 36.gxf6 Qb1+ 37.Kg2 Qa1 38.Qg5 Qxf6 39.Qxf6 e5 40.Rc1 Bh3+ 41.Kxh3 Ra6 42.Bxg6 c5 43.Qxa6 Kg7 44.Be4 b3 45.Rxc5 Re8 46.Qxa5 Kf6 47.Qb6+ Kg7 48.Qxb3 Re7 49.Qb4 Re8 50.Kg2 Rf8 51.Qb2 f6 52.Rc7+ Rf7 53.Rxf7+ Kxf7 54.Qb7+ Ke6 55.Bd5+ Kf5 56.Qh7+ Kg5 
  +-  (74.95)   Depth: 38/77   00:03:43  2620MN, tb=269
34.Rxd7 Bxd7 35.Nf6+ Bxf6 36.gxf6 Qxa4 37.Rc1 Qa3 38.Rd1 Qc3 39.Rxd7 Qa1+ 40.Kg2 Qxf6 41.Qxf6 Rad8 42.Rxd8 Rxd8 43.Qxd8+ Kg7 44.Qxa5 b3 45.Bxc6 Kf6 46.Qc3+ Ke7 47.Qb4+ Kf6 48.Qxb3 e5 49.Qd1 e4 50.Qd6+ Kg7 51.Qe5+ Kf8 52.Qxe4 Kg8 53.Qe5 Kf8 54.Qf6 g5 55.Qd8+ Kg7 56.Qxg5+ Kf8 57.Qf6 Kg8 
  +-  (#26)   Depth: 39/77   00:04:43  3390MN, tb=312
...
34.Rxd7 Bxd7 35.Nf6+ Bxf6 36.gxf6 Qxa4 37.Rc1 Qa3 38.Rd1 Qc3 39.Rxd7 Qxf6 40.Qxf6 Rad8 41.Rxd8 Rxd8 42.Qxd8+ Kg7 43.Bxc6 b3 44.Qxa5 Kf6 45.Qb4 g5 46.Qxb3 Ke5 47.Qb4 Kf6 48.Qd6 Kf5 49.Qd4 Kg6 50.Be8 e5 51.Qd7 Kh7 52.Qxf7+ Kh8 53.Bc6 g4 54.Qf8+ Kh7 55.Be4# 
  +-  (#22)   Depth: 43/77   00:05:27  4307MN, tb=321

BTW: Does anybody know, why tbs cannot be switched off for Laser at all?
Did take out all the paths in Fritz- GUI to Syzygys, Nalimovs and Gaviotas, even the GUI's tbs -usage and -paths too, yet there are still tbs- hits in output.


Ethereal with Syzygy Probe Depth set to 127 (max.), which it doesn't seem to care much about neither

r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 0 1

Analysis by Ethereal 11.25 (POPCNT):

Code: Select all

34.Tcd2 Sc5 35.Lxc6 Lb7 36.Lxb7 Sxb7 37.Sf6+ 
  -+  (-4.91)   Tiefe: 7/12   00:00:00  43kN
...
34.Kg2 Te8 35.Sf6+ Kf8 36.Sxd7+ Lxd7 37.Txd7 Te7 38.Txe7 Kxe7 39.Df4 Tc8 40.Txc6 Txc6 41.Lxc6 e5 42.Dc1 Dc3 43.Dxc3 bxc3 44.Le4 Ke6 
  -/+  (-0.91)   Tiefe: 14/26   00:00:02  3163kN
34.Sh6+ Lxh6 35.Dxh6 c5 36.Kg2 Dxc2 37.Lxc2 Lb7+ 38.Kh3 Se5 39.Te1 b3 40.Lb1 c4 41.Txe5 Ld5 42.Te3 Tac8 43.Kg4 c3 44.Lxg6 fxg6 45.Dxg6+ 
  +/-  (0.93)   Tiefe: 15/26   00:00:03  6559kN
...
34.Sh6+ Lxh6 35.Dxh6 c5 36.Kg2 Dxc2 37.Lxc2 Lb7+ 38.Kh3 Se5 39.f4 Lf3 40.fxe5 Lxd1 41.Lxg6 fxg6 42.Dxg6+ Kh8 43.Dh6+ Kg8 44.Dxe6+ Kh8 45.Dh6+ Kg8 46.Dg6+ Kh8 47.Dh6+ 
  =  (0.00)   Tiefe: 33/68   00:00:24  295MN, tb=3719
34.Txd7 
  =  (0.14 ++)   Tiefe: 34/68   00:00:29  406MN, tb=5921
...
34.Txd7 
  +-  (2.98 ++)   Tiefe: 34/68   00:00:49  903MN, tb=10683
34.Txd7 
  +-  (4.52 ++)   Tiefe: 34/68   00:01:01  1197MN, tb=14012
...
34.Txd7 Te8 35.Sf6+ Kf8 36.Sh7+ Kg8 37.Tc7 Db1+ 38.Kh2 Ld7 39.Txd7 Ted8 40.Sf6+ Kf8 41.Txc6 Txd7 42.Lxb1 Ke7 43.Df4 Th8+ 44.Kg2 Thd8 45.Sxd7 Txd7 46.Tc8 Tb7 47.Le4 e5 48.Dh4 Tb6 49.Tc7+ Kd6 50.Txf7 b3 51.Txg7 Kc5 52.Tc7+ Kb4 53.Lxg6+ Ka3 54.De4 Tb4 55.Dxe5 Ka2 56.Tc5 Txa4 
  +-  (21.43)   Tiefe: 34/77   00:06:36  9491MN, tb=2797716

[Guenther]

BTW: Does anybody know, why tbs cannot be switched off for Laser at all?
Did take out all the paths in Fritz- GUI to Syzygys, Nalimovs and Gaviotas, even the GUI's tbs -usage and -paths too, yet there are still tbs- hits in output.
:shock:

It is no problem with Laser. The default option is 'empty' for the Syzygy path.
Probably you have several CB programs installed and it gets the path from one of those,
or you had it saved with your Laser config in the CB program you use.
(e.g. in : C:\Users\XXX\AppData\Roaming\ChessBase\Engines.UCI\)

Anyhow it is a user error.

[peter]

It is no problem with Laser. The default option is 'empty' for the Syzygy path.
Probably you have several CB programs installed and it gets the path from one of those,
or you had it saved with your Laser config in the CB program you use.
(e.g. in : C:\Users\XXX\AppData\Roaming\ChessBase\Engines.UCI\)

How can an engine get a path to tbs "from one of those" other engines after restart of the GUI, especially if all the paths defined at GUI's common options for GUI and engines are deleted, means are "empty". Should I restart Windows or the PC at all?
The UCI- file in Fritz doesn't have any path to tbs defined for Laser, neither is there any UCI-option for that at Laser's.

[Guenther]

It is no problem with Laser. The default option is 'empty' for the Syzygy path.
Probably you have several CB programs installed and it gets the path from one of those,
or you had it saved with your Laser config in the CB program you use.
(e.g. in : C:\Users\XXX\AppData\Roaming\ChessBase\Engines.UCI\)

How can an engine get a path to tbs "from one of those" other engines...

Who said other engines? I said other CB programs = CB GUIs.
(At least in the past there existed several other ini/config files, which also saved paths)
Actually I couldn't care less for CB abnormalities.

I can assure you that Laser itself has no clue about the path (should be clear of course), so you have to find the problem in your CB usage.
Why don't you just create a Laser entity with explicitely no path under a new name, if you cannot solve your problem with CB?

[peter]

Actually I couldn't care less for CB abnormalities.

I can assure you that Laser itself has no clue about the path (should be clear of course), so you have to find the problem in your CB usage.
Why don't you just create a Laser entity with explicitely no path under a new name, if you cannot solve your problem with CB?

It's not my problem with CB, it's a problem of Laser's together with CB- GUIs, at least with Deep Fritz 14, which I tried only so far.

I told you, there's no UCI- parameter for Laser shown in Fritz at installation dealing with tbs, so I can't create a Laser entity in Fritz with "explicitely no path" under which name ever. You might call it my problem again, and of course you're right that it isn't your problem, I'd still call it a problem of communication between Fritz and Laser, blame the one or the other one more for it, as you like.

But thanks for trying to help. Maybe I'll install under Arena or Shredder, take the config- file from there, if there is a line for Syzygys, I could copy and paste that into UCI- file of Laser's at CB- engines. Don't you care anymore about it, I neither won't tell, if it worked or not.