Nolot #3 vs. SF Dev

[MikeGL]

.
This really is an irritating thing.
I was wondering on why current SF dev cannot solve the Nolot #3 now,

[d]r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w - - 0 1
bm Nxg5

SF dev released around Dec'2018 was able to solve this in less than 1 minute on this same hardware I am using, but current SF dev 19092712 cannot solve it after multiple runs more than 4 mins per run. Have SF devs removed something important?

[Dann Corbit]

Are you sure that Nxg5 is better than (for instance) h3?

Edit:
My bleeding edge SF solved it pretty quickly:

Code: Select all

Searching: r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w KQkq - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +1.48   00:00    7877  O-O Bxf3 Rxf3 
 2   +1.67   00:00   32607  O-O Nxf3+ gxf3 Bh3 
 3   +0.75   00:00   53160  O-O O-O Bxg5 Bxg5 Qb1 Be3+ Kh1 
 4   +0.85   00:00   79464  h3 Bxf3 gxf3 
 5   +0.79   00:00  103382  Bxg5 Bxg5 O-O O-O Qc2 Bxf3 Bxh7+ Kh8 gxf3 Bf4 
 6   +1.07   00:00  130199  h3 Bxf3 gxf3 Nf7 f4 
 7   +1.18   00:00  154618  h3 Bxf3 gxf3 O-O f4 Ne4 Nxe4 dxe4 
 8   +0.99   00:00  200284  h3 Bxf3 gxf3 Nf7 O-O Qd7 Be3 O-O-O Kg2 
 9   +0.74   00:00  319692  h3 Bxf3 gxf3 Nf7 O-O Qd7 b4 Bh4 Kg2 O-O-O b5 Na5 f4 Bxg3 
10   +0.73   00:00  432289  h3 Bxf3 gxf3 Nf7 O-O Qd7 Be3 O-O-O Kg2 Bh4 a4 Kb8 f4 Bxg3 Kxg3 a6 
11   +0.65   00:00  511715  h3 Bxf3 gxf3 Nf7 O-O Qd7 Be3 O-O-O Kg2 Kb8 b4 Bh4 a4 Ne7 Bf2 c6 b5 
12   +0.52   00:00  993956  h3 Bxf3 gxf3 Nf7 O-O Qd7 Kg2 O-O-O b4 Kb8 Be3 Bh4 b5 Ne7 Qb3 g5 
13   +0.51   00:00   1466K  h3 Bxf3 gxf3 Nf7 O-O Bh4 Nh5 g6 Nf4 Qe7 Kh2 a6 Be3 O-O-O Ng2 Kb8 f4 
14   +0.69   00:00   1778K  h3 Bxf3 gxf3 Nf7 O-O Qd7 Kg2 Bh4 Qb3 O-O-O a4 Bxg3 Kxg3 g5 Kh2 h5 Be3 
15   +0.45   00:00   3364K  h3 Bxf3 gxf3 Nf7 O-O Qd7 Kh2 g6 b4 Bh4 a4 Ne7 b5 O-O f4 a6 Be3 axb5 Bxb5 
16   +0.46   00:00   4096K  h3 Bxf3 gxf3 Nf7 O-O Qd7 Kh2 Bh4 b4 g6 a4 Ne7 Rg1 c6 Be3 O-O-O f4 Kb8 b5 Bxg3+ Rxg3 Nf5 Bxf5 
17   +0.52   00:00   4505K  h3 Bxf3 gxf3 Nf7 O-O Qd7 Kh2 g6 b4 Bh4 b5 Ne7 Rg1 O-O-O a4 Kb8 a5 Rhf8 a6 b6 f4 
18   +0.65   00:01  11167K  h3 Bxf3 gxf3 Nf7 Be3 g6 Qe2 Bg5 O-O-O Bxe3+ Qxe3 Qd7 Rhg1 Ne7 Kb1 O-O-O Nf1 Nf5 Qf2 a6 Ne3 Kb8 Nxf5 gxf5 
19   +0.71   00:01  13592K  h3 Bxf3 gxf3 g6 Qe2 Nf7 Be3 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 f4 O-O-O O-O-O Kb8 h4 Qf8 Kb1 Ne7 h5 Nf5 Ne3 Nxe3 Qxe3 
20   +0.73   00:01  14689K  h3 Bxf3 gxf3 g6 Qe2 Nf7 Be3 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 f4 O-O-O O-O-O Kb8 h4 Ne7 Kb1 Qf8 Ne3 Nh6 h5 Nef5 Ka1 Qg7 Bxf5 Nxf5 
21   +0.47   00:02  20332K  h3 Bxf3 gxf3 g6 Be3 Nf7 Qe2 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 h4 O-O-O Ne3 Qf4 O-O-O Nh6 Kb1 Kb8 h5 Nf5 Bxf5 gxf5 Rh4 Qh6 f4 Ka8 
22   +0.67   00:02  21036K  h3 Bxf3 gxf3 g6 Be3 Nf7 Qe2 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 h4 O-O-O Ne3 Qf4 O-O-O Nh6 Kb1 Rhf8 h5 gxh5 Rxh5 Qxf3 Qxf3 Rxf3 Rxh6 Rxe3 Bxh7 
23   +0.66   00:03  32420K  h3 Bxf3 gxf3 g6 Be3 Nf7 Qe2 Bg5 Nf1 Nh6 O-O-O Qe7 f4 Bh4 Nd2 O-O-O Rhg1 Rhg8 Nb3 Nf5 Bf2 Bxf2 Qxf2 Kb8 Nc5 Ka8 Kb1 
24   +0.62   00:04  38794K  h3 Bxf3 gxf3 Nf7 Be3 g6 Qe2 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 f4 O-O-O O-O-O Qg7 h4 Nh6 h5 Ne7 Ne3 Nhf5 Nxf5 Nxf5 Rdg1 Qf7 hxg6 hxg6 Rxh8 Rxh8 
25   +0.65   00:05  48645K  h3 Bxf3 gxf3 Nf7 Be3 g6 Qe2 Bg5 Nf1 Bxe3 Nxe3 Qh4+ Qf2 Qf4 Ng2 Qh6 f4 O-O-O h4 Qg7 h5 Nh6 O-O-O Ne7 Kb1 Kb8 hxg6 hxg6 Nh4 Rdf8 Qg3 Rhg8 Rdg1 Qf7 Ka1 Nhf5 Qh3 Qe8 Kb1 Nxh4 Qxh4 
26   +1.87   00:08  78524K  Nxg5 Bxd1 Nxe6 Qb8 Nxg7+ Kd8 Kxd1 b5 Rf1 Kc8 N3f5 Bf8 Ne6 Kd7 Nfg7 Bxg7 Nxg7 Nd8 Rf6 Kc8 e6 Nc6 Bf4 Kb7 Rf7 a6 Nf5 Rf8 Bxc7 Qxc7 Rxc7+ Kxc7 
27   +2.06   00:10  92975K  Nxg5 Bxd1 Nxe6 Qb8 Nxg7+ Kd8 Kxd1 b5 Rf1 Kc8 N3f5 Bf8 Ne6 Kd7 Nfg7 Bxg7 Nxg7 Nd8 Rf6 Rg8 Bf5+ Ke7 Nh5 b4 Nf4 Qb5 Bd3 Qd7 Bxh7 Rxg2 Bf5 Rg1+ Kc2 Qb5 Bd3 Qd7 Ng6+ Ke8 Bf5 
28   +2.20   00:14 134150K  Nxg5 Bxd1 Nxe6 Qb8 Nxg7+ Kd8 Kxd1 b5 Rf1 Kc8 N3f5 Kb7 a4 a6 Nxe7 Nxe7 Rf7 Nc6 Ne6 Qe8 Rf6 Ra7 axb5 axb5 Nc5+ Kc8 Rxa7 Nxa7 Bf4 Kb8 Kc2 Nc6 e6 Ne7 Nd7+ Kc8 Bxb5 Qh5 Nc5 
29   +2.15   00:25 239089K  Nxg5 Bxd1 Nxe6 Bg4 Nxd8 Nxd8 Nf5 Ne6 O-O c6 Nxe7 Kxe7 h3 Bh5 g4 Bg6 Bf5 Be8 b3 b6 Ba3+ c5 b4 Bb5 bxc5 bxc5 Rab1 Rhb8 Rf2 Bc6 Rxb8 Rxb8 Kg2 g6 Bxe6 Kxe6 Bxc5 Rb1 g5 
30   +2.22   00:31 290026K  Nxg5 Bxd1 Nxe6 Bg4 Nxd8 Nxd8 Nf5 Bxf5 Bxf5 c6 O-O g6 Bg4 h5 Be2 Rg8 Be3 Ne6 Bd3 Kd7 g3 Raf8 Rxf8 Nxf8 Rf1 Ne6 Kg2 Rg7 a4 c5 Bh6 Rh7 Bd2 Rg7 Be3 c4 Bc2 Ng5 h4 Ne6 a5 
31   +2.24   00:34 318729K  Nxg5 Bxd1 Nxe6 Bg4 Nxd8 Nxd8 Nf5 Bxf5 Bxf5 c6 O-O g6 Bg4 h5 Be2 Rg8 Be3 Ne6 Bd3 Kd7 Rf7 Raf8 Rh7 a5 Rf1 Ke8 Rf2 a4 b3 Rxf2 Kxf2 Nf8 Rh6 axb3 axb3 Kf7 g3 Ne6 Rh7+ Rg7 Rh8 Nf8 Rh6 Rh7 Rxh7+ Nxh7 h4 Nf8 
32   +2.17   00:39 373901K  Nxg5 Bxd1 Nxe6 Bg4 Nxd8 Nxd8 Nf5 Bxf5 Bxf5 c6 Bg4 g6 O-O h5 Be2 Ne6 Bd3 Rg8 Be3 Kd7 Rf7 Raf8 Rh7 a5 Rf1 Ke8 Rf2 a4 g3 Rxf2 Kxf2 Nf8 Rh6 Kf7 Kg2 a3 

[Dann Corbit]

Hold on again, I had the wrong castle rights.
I will try again with castle rights set to none

[Dann Corbit]

OK, it makes sense now.

Your current position is wrong. The position you provided has no castle rights.

Nolot #3 has castle rights in the position:

See: https://en.wikipedia.org/wiki/Nolot

Problem 3

FEN: r2qk2r/ppp1b1pp/2n1p3/3pP1n1/3P2b1/2PB1NN1/PP4PP/R1BQK2R w KQkq - 0 1
Problem 3
Smagin - Sahovic, Biel 1990[4]

White to play: 12. Nxg5!!

12.Nxg5!! Bxd1 13.Nxe6 Qb8 14.Nxg7+!! Kf8 15.Bh6! Bg4 16.0-0+ Kg8 17.Rf4 +-

White wins with a queen sac but black has defensive resources.

[MikeGL]

Hold on again, I had the wrong castle rights.
I will try again with castle rights set to none

Thanks a lot! That's the correct reason. Just last week, I freshly downloaded a Nolot test suite from some random sites to
test the latest SF dev, and that Nolot suite is wrong and don't have castling rights for all positions. Now I feel relieved that SF dev of now is indeed better than that of 2018. Thanks again

p.s. solved by my setup now in less than 12 seconds, i thought the current dev was weaker.