Project Sting (4)

[wolfman]

Results in my Final Test Suite (10 sec. 1cpu)

Rank Engine Version TSR %MM ADD ATMM ART
8 Sting 3VE 64 3142 36,37 13,99 2,40 724
10 Stockfish 3JA 64 3138 36,27 14,26 2,53 729
11 Sting 4b 64 3125 35,53 13,85 2,56 736
12 Sting 2VE 64 3115 34,40 14,12 2,34 736

Eran

[lech]

Results in my Final Test Suite (10 sec. 1cpu)

Rank Engine Version TSR %MM ADD ATMM ART
8 Sting 3VE 64 3142 36,37 13,99 2,40 724
10 Stockfish 3JA 64 3138 36,27 14,26 2,53 729
11 Sting 4b 64 3125 35,53 13,85 2,56 736
12 Sting 2VE 64 3115 34,40 14,12 2,34 736

Eran

Thanks Eran for this test.
I have one interesting position for your test.
[d]r4rk1/1p1nb1pp/p1bpp3/q5P1/3NP1P1/2N2P2/PPPQ4/1K1R3R w - -
Rxh7 or f4?

[zullil]

I have one interesting position for your test.
[d]r4rk1/1p1nb1pp/p1bpp3/q5P1/3NP1P1/2N2P2/PPPQ4/1K1R3R w - -
Rxh7 or f4?

Stockfish sig-4364793 (8 threads, 4 GB hash) likes f4:

Code: Select all

45   -0.48 10:52:31 364655M  f4 Bxe4 Rhe1 Nc5 Nxe4 Qxd2 Rxd2 Rxf4 Nxc5 dxc5 Nxe6 
                            Rxg4 Rd7 Bf8 Kc1 b5 Kd1 Re8 Ra7 h5 gxh6 gxh6 Rxa6 
                            Rg6 c3 h5 Re5 h4 Rg5 Rxg5 Nxg5 Re3 Rg6+ Bg7 Rc6 c4 
                            Rc8+ Bf8 a4 bxa4 Rxc4 Be7 Rxh4 a3 bxa3 Bxg5 Rg4 Re5 
                            Kc2 Kf7 Kd3 
Nodes: 403476806625
Nodes/second: 9352504
Best move: f4
Ponder move: Bxe4

[lech]

I have one interesting position for your test.
[d]r4rk1/1p1nb1pp/p1bpp3/q5P1/3NP1P1/2N2P2/PPPQ4/1K1R3R w - -
Rxh7 or f4?

Stockfish sig-4364793 (8 threads, 4 GB hash) likes f4:

Code: Select all

45   -0.48 10:52:31 364655M  f4 Bxe4 Rhe1 Nc5 Nxe4 Qxd2 Rxd2 Rxf4 Nxc5 dxc5 Nxe6 
                            Rxg4 Rd7 Bf8 Kc1 b5 Kd1 Re8 Ra7 h5 gxh6 gxh6 Rxa6 
                            Rg6 c3 h5 Re5 h4 Rg5 Rxg5 Nxg5 Re3 Rg6+ Bg7 Rc6 c4 
                            Rc8+ Bf8 a4 bxa4 Rxc4 Be7 Rxh4 a3 bxa3 Bxg5 Rg4 Re5 
                            Kc2 Kf7 Kd3 
Nodes: 403476806625
Nodes/second: 9352504
Best move: f4
Ponder move: Bxe4

1.f4 Bxe4 2.Rhe1 seems to be the best to play.
It is very important to reject 1.Rxh7 immediately.
Sting Sf 4 beta has a problem (other engines too) and it is one of two reasons why I should move starting of the full version.

[lech]

Sting Sf 4 beta has a problem (other engines too) and it is one of two reasons why I should move starting of the full version.

The second reason is a problem to solve such a position:
[d]8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+;
I test version which is able to get it quickly. It may take few days. Sorry.
Sting-sf-4 beta+; hash 1024, threads 4, i5 (29 seconds)

Code: Select all

info depth 24 seldepth 41 multipv 1 score cp -286 nodes 104927437 nps 4960170 ti
me 21154 pv d7d8q g5f7 d6e7 f7d8 e7d8 b4a5 d8d7 a5c7 g4e3 c7g3 d7c6 g3f2 e3d5 f2
d4 c6b5 a6b8 b5c4 b8c6 d5c3 c6e5 c4b3 h7g6 d1c2 g6f6 c3e4 f6e6 c2d1 c5c4 b3b4 e6
d5 e4f6 d5e6
info depth 25
info currmove d7d8q currmovenumber 1
info currmove g4e3 currmovenumber 2
info nodes 117427392 nps 5004790 time 23463
info currmove g4f6 currmovenumber 3
info depth 25 seldepth 0 multipv 1 score cp -274 lowerbound nodes 150801757 nps
5058424 time 29812 pv g4f6
info nodes 150801757 nps 5058424 time 29812
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -262 lowerbound nodes 158650603 nps
5067090 time 31310 pv g4f6
info nodes 158650603 nps 5064502 time 31326
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -244 lowerbound nodes 163326247 nps
5074765 time 32184 pv g4f6
info nodes 163326247 nps 5072401 time 32199
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -217 lowerbound nodes 171251165 nps
5082089 time 33697 pv g4f6
info nodes 171251165 nps 5077418 time 33728
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -176 lowerbound nodes 178446846 nps
5092806 time 35039 pv g4f6
info nodes 178446846 nps 5090627 time 35054
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -115 lowerbound nodes 186405668 nps
5104068 time 36521 pv g4f6
info nodes 186405668 nps 5101972 time 36536
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp -23 lowerbound nodes 197133552 nps 5
111854 time 38564 pv g4f6
info nodes 197133552 nps 5109734 time 38580
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp 113 lowerbound nodes 210778710 nps 5
129434 time 41092 pv g4f6
info nodes 210778710 nps 5129434 time 41092
info currmove g4f6 currmovenumber 1
info depth 25 seldepth 0 multipv 1 score cp 318 lowerbound nodes 238960554 nps 5
153899 time 46365 pv g4f6
info nodes 238960554 nps 5152232 time 46380