Other fun mates

[Vinvin]

Is there a mate here ?

r1bq1r1k/3nbp1B/p1n1p1p1/1p1p2P1/2p2P1P/1PN1PN2/PBPPQ3/R3K2R w KQ - 0 14

First move probably h5

After h5, 20 best moves with Crystal-2020-04-22.
No mate score for the 9 best moves yet but >+19 scores should lead to mate in a foreseeable future

Code: Select all

FEN: r1bq1r1k/3nbp1B/p1n1p1p1/1p1p2PP/2p2P2/1PN1PN2/PBPPQ3/R3K2R b KQ - 0 14

Crystal-2020-04-22:
...
 20/21	14:30	9 549 063 875	10 964 542	+M10	14. ... Bb7 15.hxg6 Kg7 16.Qh2 Bxg5 17.Nxg5 Qxg5 18.Nxd5+ Nce5 19.fxg5 fxg6 20.Bxe5+ Rf6 21.gxf6+ Nxf6 22.Qh6+ Kf7 23.Qxg6+ Kf8 24.Bd6+
 20/20	14:30	9 549 063 875	10 964 542	+M10	14. ... Nb4 15.hxg6 Nf6 16.Bg8+ Kxg8 17.Qh2 Nxc2+ 18.Kd1 fxg6 19.Qh6 Nh5 20.Qxg6+ Ng7 21.Qh7+ Kf7 22.Ne5+ Ke8 23.Qg6+ Rf7 24.Qxf7+
 20/20	14:30	9 549 063 875	10 964 542	+M10	14. ... gxh5 15.Nxd5+ c3 16.Bxc3+ Nf6 17.gxf6 Rg8 18.Qh2 Rg5 19.fxg5 Nd4 20.Qxh5 Nxf3+ 21.Kf2 Bf8 22.Qxf7 Bh6 23.Rxh6 Qxd5 24.Be4+
 20/25	14:30	9 549 063 875	10 964 542	+M11	14. ... Rb8 15.Ne4+ c3 16.Bxc3+ Nd4 17.hxg6 Bxg5 18.Nfxg5 Qxg5 19.Bxd4+ e5 20.fxg5 fxg6 21.Bxg6+ Kg8 22.Qh2 Rf1+ 23.Kxf1 Kg7 24.Qh7+ Kf8 25.Qf7+
 20/25	14:30	9 549 063 875	10 964 542	+M11	14. ... a5 15.Ne4+ c3 16.Bxc3+ Nde5 17.Nxe5 Kg7 18.hxg6 fxg6 19.Qh2 Bxg5 20.fxg5 Qxg5 21.Nxg5 Rf1+ 22.Rxf1 Ra7 23.Nxc6+ d4 24.Qe5+ Kh6 25.Rh1+
 20/25	14:30	9 549 063 875	10 964 542	+M11	14. ... b4 15.hxg6 Nd4 16.Nxd4 Bxg5 17.Qh5 Bh4+ 18.Ke2 Kg7 19.Ne4 c3 20.gxf7 dxe4 21.Qg6+ Kh8 22.Bg8 Rxf7 23.Bxf7 Nf6 24.Rxh4+ Nh7 25.Qxh7+
 20/27	14:30	9 549 063 875	10 964 542	+M12	14. ... f5 15.Nxd5+ Rf6 16.hxg6 Qf8 17.Bg8+ Kxg8 18.Rh8+ Kg7 19.gxf6+ Nxf6 20.Rh7+ Kxg6 21.Nxf6 e5 22.Ng5 Qh6 23.Rxh6+ Kxh6 24.Qh2+ Kg6 25.Qh7+ Kxf6 26.Qf7+
 20/39	14:30	9 549 063 875	10 964 542	+M13	14. ... Nc5 15.hxg6 Bxg5 16.Nxg5 Nd4 17.Qh5 Kg7 18.Nce4 dxe4 19.Bxd4+ Qxd4 20.Qh6+ Kf6 21.Qxf8 Nd3+ 22.cxd3 Kf5 23.Rh4 Qxa1+ 24.Kf2 Qe1+ 25.Kxe1 Ra7 26.g7+ Kf6 27.Nxe4+
 20/33	14:30	9 549 063 875	10 964 542	+M14	14. ... Re8 15.hxg6 Bxg5 16.Nxd5+ Nde5 17.Qh2 exd5 18.fxg5 Qxg5 19.Nxg5 Bh3 20.Qxh3 Kg7 21.Qh6+ Kf6 22.gxf7+ Ke7 23.Bxe5 Nxe5 24.Qe6+ Kd8 25.fxe8Q+ Kc7 26.Q8e7+ Nd7 27.Q6xd7+ Kb6 28.Qc7+
 20/30	14:30	9 549 063 875	10 964 542	+M15	14. ... Ra7 15.hxg6 Nd4 16.Nxd4 Nf6 17.g7+ Kxg7 18.gxf6+ Bxf6 19.Qg4+ Bg5 20.Nf5+ exf5 21.Ne4+ c3 22.Bxc3+ d4 23.Bxd4+ f6 24.Qxg5+ Kf7 25.Bg6+ Ke7 26.Rh7+ Rf7 27.Qxf6+ Ke8 28.Bxf7+ Kd7 29.Qd6+
 20/44	14:30	9 549 063 875	10 964 542	+M19	14. ... e5 15.hxg6 Bxg5 16.Nxg5 Nf6 17.Qh2 Ng4 18.Qh4 Kg7 19.Bg8 Kf6 20.Nxf7+ Ke6 21.Qxg4+ Ke7 22.Qg5+ Ke8 23.Nxd8 Rf5 24.Bf7+ Kd7 25.Qxf5+ Kxd8 26.Qf6+ Kc7 27.Nxd5+ Kb7 28.Qd6 Rb8 29.Qc7+ Ka8 30.Qxc6+ Ka7 31.Qc5+ Kb7 32.Qb6+ Ka8 33.Nc7+
 20/41	14:30	9 549 063 875	10 964 542	+35,56	14. ... d4 15.hxg6 Bxg5 16.Qh2 Kg7 17.fxg5 fxg6 18.Ne4 Qc7 19.Qxc7 c3 20.Qxc6 cxb2 21.Rb1 a5 22.Nxd4 Rf1+ 23.Kxf1 b4 24.Qxa8 Nb6 25.Qa7+ Bd7 26.Qxb6 a4 27.bxa4
 20/41	14:30	9 549 063 875	10 964 542	+27,07	14. ... Nce5 15.hxg6
 21/44	14:30	9 549 063 875	10 964 542	+28,42	14. ... Rg8 15.Nxd5+ f6 16.hxg6 Kg7 17.Qh2 Kf8 18.Bxg8 Nde5 19.Bxe5 Ke8 20.Bf7+ Kd7 21.gxf6 Nb4 22.fxe7 Qxe7 23.Nxe7 Kxe7 24.Qh4+ Kd7 25.Nd4 Bb7 26.g7 Nxc2+ 27.Nxc2 Bxh1 28.g8Q Rxg8 29.Bxg8
 21/39	14:30	9 549 063 875	10 964 542	+27,00	14. ... Nf6 15.hxg6 Kg7 16.Qh2 Ng4 17.Qh5 Rh8 18.Nxd5+ Kf8 19.g7+ Ke8 20.gxh8Q+ Kd7 21.Qxd8+ Kxd8 22.Nxe7 Kxe7 23.Qxg4 Bd7 24.bxc4 bxc4 25.Be4 Rg8 26.Rh6 Ke8 27.Rh7 Rf8 28.Ba3 c3 29.Bxf8 cxd2+ 30.Kf2
 21/46	14:30	9 549 063 875	10 964 542	+25,79	14. ... Bf6 15.hxg6 fxg6 16.Qh2 Kg7 17.gxf6+ Rxf6 18.Nxd5 exd5 19.Bxg6 Kf8 20.Qh7 Qe8 21.Qh8+ Ke7 22.Qxe8+ Kd6 23.Bxf6 Nxf6 24.Qf8+ Kc7 25.Qxf6 Bd7 26.Ne5 cxb3 27.Rh7 Nxe5 28.Qxe5+ Kc6 29.Rh6 Rd8 30.Bf7+ Kb7 31.Qxd5+ Ka7 32.Qc5+ Ka8
 21/41	14:30	9 549 063 875	10 964 542	+25,22	14. ... Nd4 15.Nxd4 Bxg5 16.hxg6 Bh4+ 17.Kd1 fxg6 18.Bxg6 Kg7 19.Nxe6+ Kxg6 20.Qg2+ Kf7 21.Nxd8+ Ke7 22.Nc6+ Kd6 23.Qxd5+ Kc7 24.Ne5 Bf6 25.Qxa8 Nxe5 26.Nd5+ Kd8 27.fxe5 c3 28.Ba3 Bxe5 29.Bxf8 cxd2 30.Be7+ Kd7 31.Qa7+ Ke6
 21/45	14:30	9 549 063 875	10 964 542	+23,56	14. ... Nde5 15.hxg6 Bxg5 16.Nxg5 Kg7 17.Qh5 Kf6 18.Nxf7 Nf3+ 19.Qxf3 Nd4 20.Qh5 Ke7 21.Nxd8 Nxc2+ 22.Kd1 Rxd8 23.Kxc2 b4 24.Ne2 Bb7 25.g7 c3 26.g8R Rxg8 27.Qh4+ Kf7 28.Bxg8+ Rxg8 29.dxc3 bxc3 30.Nxc3
 21/53	14:30	9 549 063 875	10 964 542	+22,19	14. ... Bxg5 15.hxg6 Nf6 16.fxg5 Ng4 17.Nxd5+ e5 18.Nf6 Qxf6 19.gxf6 fxg6 20.Bxg6+ Kg8 21.Bh7+ Kf7 22.Be4 Bd7 23.Ng5+ Kxf6 24.Nh7+ Ke7 25.Nxf8 Rxf8 26.Rh7+ Rf7 27.Ba3+ b4 28.Rxf7+ Kxf7 29.Bxc6 bxa3 30.Bxd7 Nf6 31.Qxc4+ Kg7 32.Bh3 Nh7 33.Qxa6 Ng5 34.Bd7 Nf3+ 35.Ke2 e4 36.Qxa3
 21/42	14:30	9 549 063 875	10 964 542	+19,77	14. ... Kg7 15.hxg6 fxg6 16.Ne4+ d4 17.Qh2 Rg8 18.Nxd4 Nxd4 19.Bxg6 Rh8 20.Bxd4+ e5 21.Bh7 Kf7 22.Qh5+ Ke6 23.Qg6+ Bf6 24.gxf6 Nf8 25.Qf5+ Kd5 26.Qxe5+ Kc6 27.Qc5+ Kb7 28.Nd6+ Kb8 29.Be5 Nd7 30.Nxb5+ Nxe5 31.Qxe5+ Kb7 32.Be4+ Kb6 33.Rxh8 Qd7 34.Bxa8 axb5

[xr_a_y]

Does your engine see that black has won here ?

[d] 5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

[Vinvin]

Does your engine see that black has won here ?

[d] 5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

After 26...Qh4!, 5 best moves lead to mate.

Code: Select all

FEN: 5rk1/1QR2p2/4pnp1/3p4/1P1PnP1q/P3P3/BB2N1PP/6K1 w - - 1 27

Stockfish_x64_modern_2020_05_02:

 67/7	04:56	3 386 379 928	11 404 832	-M3	27.Bc3 Qf2+ 28.Kh1 Qf1+ 29.Ng1 Nf2+
 67/25	04:56	3 386 379 928	11 404 832	-M12	27.Rc1 Ng4 28.h3 Qf2+ 29.Kh1 Qxe3 30.hxg4 Nf2+ 31.Kh2 Nxg4+ 32.Kh1 Kg7 33.Qc8 Rxc8 34.Rxc8 Qxe2 35.Rc1 Ne3 36.Rc2 Qxc2 37.Bxd5 exd5 38.Kh2 Qxg2+
 67/33	04:56	3 386 379 928	11 404 832	-M16	27.h3 Qf2+ 28.Kh2 Nd2 29.Kh1 Qxe2 30.Rc1 Nfe4 31.Bxd5 exd5 32.Qxd5 Ng3+ 33.Kh2 Qf2 34.Qc6 Ndf1+ 35.Rxf1 Nxf1+ 36.Kh1 Ng3+ 37.Kh2 Ne2 38.Qc1 Nxc1 39.Bxc1 Rc8 40.d5 Rc2 41.Bd2 Rxd2 42.Kh1 Qxg2+
 67/35	04:56	3 386 379 928	11 404 832	-M17	27.g3 Qg4 28.Rc2 Qf3 29.Nc3 Ng4 30.Bxd5 Ngf2 31.Kf1 exd5 32.Qxd5 Rc8 33.Qxe4 Nxe4+ 34.Kg1 Rxc3 35.Bxc3 Qd1+ 36.Be1 Qxc2 37.Kf1 Qd3+ 38.Kg2 Qe2+ 39.Kg1 Qxe1+ 40.Kg2 Qe2+ 41.Kh3 Qf3 42.a4 Nf2+ 43.Kh4 Qg4+
 67/51	04:56	3 386 379 928	11 404 832	-M25	27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Kc5 Qxa3+ 37.Kb6 Qxa2 38.Qa7 Qc4 39.Qc7 Qa4 40.Qa7 Qxd4+ 41.Ka6 Qxf4 42.Qe7 Qa4+ 43.Kb6 Rb8+ 44.Qb7 Rxb7+ 45.Kxb7 Qxb5+ 46.Kc7 Nd3 47.g3 Nc5 48.g4 Qb7+ 49.Kd6 Ne4+ 50.Ke5 Qc7+ 51.Kd4 Qc3+

[MikeB]

Does your engine see that black has won here ?

[d]5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

info depth 13 seldepth 9 multipv 1 score cp 0 nodes 99917 nps 24979250 tbhits 0 time 4 pv f6g4 h2h3 h6h4 h3g4 h4e1 g1h2 e1h4 h2g1
info depth 14 seldepth 18 multipv 1 score cp 96 nodes 293634 nps 48939000 tbhits 0 time 6 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 15 seldepth 17 multipv 1 score cp 202 nodes 413394 nps 59056285 tbhits 0 time 7 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 16 seldepth 27 multipv 1 score cp 248 nodes 803646 nps 73058727 tbhits 0 time 11 pv h6h4 h2h3 h4e1 g1h2 e1e2 f4f5 g6f5 a2b1 e2b2 b1e4 f6e4 c7c8 b2a3 c8f8 g8f8 b7b8 f8g7 b4b5 a3e3 b8e5 g7g6 b5b6
<snip>
info depth 56 seldepth 66 multipv 1 score mate 36 nodes 6604228143 nps 137734429 hashfull 735 tbhits 12458791 time 47949 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 h2h3 b4b3 f3e2 b3g3 e2d1 g3b3 b5b6 b3b6 d1c2 b6b5 c2d2 f6e4 d2d1 b5b4 d1c2 b4d4 h3h4 e4g3 c2c3 d4f4 c3b2 f4h4 b2b3 h4h3 b3a2 g3e4 a2b2 f7f5 b2c1 d5d4 c1c2 d4d3 c2b3 d3d2 b3c2 h3c3 c2d1 c3c1 d1e2
<snip>
info 80 seconds
info depth 60 seldepth 70 multipv 1 score mate 35 nodes 10889556593 nps 136116054 hashfull 923 tbhits 43223285 time 80002 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 f3f2 b4b5 f2e1 b5b1 e1f2 b1b2 f2e3 b2h2 e3f3 h2b2 g3g4 b2b3 f3e2 f6g4 e2d2 g4f6 d2c2 b3h3 c2d2 f6h5 f4f5 g6f5 d2e2 h5g3 e2f2 g3e4 f2g2 h3g3 g2f1 f5f4 f1e2 f4f3 e2d3 f3f2 d3e2 g3b3 e2f1 b3b1 f1e2 f2f1q e2e3 b1b3
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 11101296751 nps 135915384 hashfull 929 tbhits 44672565 time 81678 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

info 90 seconds
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 12127871363 nps 134751131 hashfull 951 tbhits 52866389 time 90002 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

that was the best Honey could do after 5 minutes - doesn't appear to be the shortest, although it did find Qh4 pretty fast

[xr_a_y]

Does your engine see that black has won here ?

[d]5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

info depth 13 seldepth 9 multipv 1 score cp 0 nodes 99917 nps 24979250 tbhits 0 time 4 pv f6g4 h2h3 h6h4 h3g4 h4e1 g1h2 e1h4 h2g1
info depth 14 seldepth 18 multipv 1 score cp 96 nodes 293634 nps 48939000 tbhits 0 time 6 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 15 seldepth 17 multipv 1 score cp 202 nodes 413394 nps 59056285 tbhits 0 time 7 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 16 seldepth 27 multipv 1 score cp 248 nodes 803646 nps 73058727 tbhits 0 time 11 pv h6h4 h2h3 h4e1 g1h2 e1e2 f4f5 g6f5 a2b1 e2b2 b1e4 f6e4 c7c8 b2a3 c8f8 g8f8 b7b8 f8g7 b4b5 a3e3 b8e5 g7g6 b5b6
<snip>
info depth 56 seldepth 66 multipv 1 score mate 36 nodes 6604228143 nps 137734429 hashfull 735 tbhits 12458791 time 47949 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 h2h3 b4b3 f3e2 b3g3 e2d1 g3b3 b5b6 b3b6 d1c2 b6b5 c2d2 f6e4 d2d1 b5b4 d1c2 b4d4 h3h4 e4g3 c2c3 d4f4 c3b2 f4h4 b2b3 h4h3 b3a2 g3e4 a2b2 f7f5 b2c1 d5d4 c1c2 d4d3 c2b3 d3d2 b3c2 h3c3 c2d1 c3c1 d1e2
<snip>
info 80 seconds
info depth 60 seldepth 70 multipv 1 score mate 35 nodes 10889556593 nps 136116054 hashfull 923 tbhits 43223285 time 80002 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 f3f2 b4b5 f2e1 b5b1 e1f2 b1b2 f2e3 b2h2 e3f3 h2b2 g3g4 b2b3 f3e2 f6g4 e2d2 g4f6 d2c2 b3h3 c2d2 f6h5 f4f5 g6f5 d2e2 h5g3 e2f2 g3e4 f2g2 h3g3 g2f1 f5f4 f1e2 f4f3 e2d3 f3f2 d3e2 g3b3 e2f1 b3b1 f1e2 f2f1q e2e3 b1b3
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 11101296751 nps 135915384 hashfull 929 tbhits 44672565 time 81678 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

info 90 seconds
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 12127871363 nps 134751131 hashfull 951 tbhits 52866389 time 90002 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

that was the best Honey could do after 5 minutes - doesn't appear to be the shortest, although it did find Qh4 pretty fast

I'm curious, on what hardware do you get 134Mnps ?

[MikeB]

Does your engine see that black has won here ?

[d]5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

info depth 13 seldepth 9 multipv 1 score cp 0 nodes 99917 nps 24979250 tbhits 0 time 4 pv f6g4 h2h3 h6h4 h3g4 h4e1 g1h2 e1h4 h2g1
info depth 14 seldepth 18 multipv 1 score cp 96 nodes 293634 nps 48939000 tbhits 0 time 6 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 15 seldepth 17 multipv 1 score cp 202 nodes 413394 nps 59056285 tbhits 0 time 7 pv h6h4 g2g3 h4g4 c7c2 g4f3 e2c3 e4c3 b2c3 f3d1 c3e1
info depth 16 seldepth 27 multipv 1 score cp 248 nodes 803646 nps 73058727 tbhits 0 time 11 pv h6h4 h2h3 h4e1 g1h2 e1e2 f4f5 g6f5 a2b1 e2b2 b1e4 f6e4 c7c8 b2a3 c8f8 g8f8 b7b8 f8g7 b4b5 a3e3 b8e5 g7g6 b5b6
<snip>
info depth 56 seldepth 66 multipv 1 score mate 36 nodes 6604228143 nps 137734429 hashfull 735 tbhits 12458791 time 47949 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 h2h3 b4b3 f3e2 b3g3 e2d1 g3b3 b5b6 b3b6 d1c2 b6b5 c2d2 f6e4 d2d1 b5b4 d1c2 b4d4 h3h4 e4g3 c2c3 d4f4 c3b2 f4h4 b2b3 h4h3 b3a2 g3e4 a2b2 f7f5 b2c1 d5d4 c1c2 d4d3 c2b3 d3d2 b3c2 h3c3 c2d1 c3c1 d1e2
<snip>
info 80 seconds
info depth 60 seldepth 70 multipv 1 score mate 35 nodes 10889556593 nps 136116054 hashfull 923 tbhits 43223285 time 80002 pv h6h4 g2g3 h4h5 c7c2 h5f3 e2c3 f3e3 g1g2 e4c3 b2c3 e3e4 g2f1 e4c2 b7a6 c2c3 a6e2 f8c8 f1g2 c3c2 e2c2 c8c2 g2f3 c2a2 a3a4 a2a4 b4b5 a4b4 f3f2 b4b5 f2e1 b5b1 e1f2 b1b2 f2e3 b2h2 e3f3 h2b2 g3g4 b2b3 f3e2 f6g4 e2d2 g4f6 d2c2 b3h3 c2d2 f6h5 f4f5 g6f5 d2e2 h5g3 e2f2 g3e4 f2g2 h3g3 g2f1 f5f4 f1e2 f4f3 e2d3 f3f2 d3e2 g3b3 e2f1 b3b1 f1e2 f2f1q e2e3 b1b3
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 11101296751 nps 135915384 hashfull 929 tbhits 44672565 time 81678 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

info 90 seconds
info depth 61 seldepth 90 multipv 1 score mate 28 nodes 12127871363 nps 134751131 hashfull 951 tbhits 52866389 time 90002 pv h6h4 e2g3 f6g4 g1f1 e4g3 h2g3 h4g3 c7c2 g4e3 f1e2 e3c2 e2d2 g3f2 d2c3 c2e1 b4b5 f2c2 c3b4 c2b2 b4c5 b2a3 c5b6 a3a2 b7a7 a2g2 f4f5 e1f3 b6c7 g6f5 c7d7 g2g3 b5b6 f3d4 a7c7 g3c7 d7c7 f5f4 b6b7 f4f3 b7b8q f8b8 c7b8 f3f2 b8c8 f2f1q c8d8 f1c4 d8e7 c4c7 e7e8 c7b7 e8d8 d4c6 d8e8 b7e7

that was the best Honey could do after 5 minutes - doesn't appear to be the shortest, although it did find Qh4 pretty fast

I'm curious, on what hardware do you get 134Mnps ?

Threadripper 3970X - Windows 10 Pro. 32 real cores. 64 logical cores. I generally just use 60 threads - keep 4 threads around for doing other stuff.

I would buy my next one from here (not that is happening anytime soon):

https://www.pugetsystems.com/landing/Wo ... cessors-91

[Dann Corbit]

I would buy my next one from here (not that is happening anytime soon):
https://www.pugetsystems.com/landing/Wo ... cessors-91

That place is just a few miles from where I live.
I would have bought my machine from them, but they were not selling the next gen threadrippers yet when I bought mine.

[xr_a_y]

Threadripper 3970X - Windows 10 Pro. 32 real cores. 64 logical cores. I generally just use 60 threads - keep 4 threads around for doing other stuff.

I would buy my next one from here (not that is happening anytime soon):

https://www.pugetsystems.com/landing/Wo ... cessors-91

Wow, a dream machine for chess engine testing ... my poor i7-9700K is crying ...

[Andrew]

Does your engine see that black has won here ?

[d] 5rk1/1QR2p2/4pnpq/3p4/1P1PnP2/P3P3/BB2N1PP/6K1 b - - 0 26

Someone got a mate here ?

After 26...Qh4!, 5 best moves lead to mate.

Code: Select all

FEN: 5rk1/1QR2p2/4pnp1/3p4/1P1PnP1q/P3P3/BB2N1PP/6K1 w - - 1 27

Stockfish_x64_modern_2020_05_02:

 67/7	04:56	3 386 379 928	11 404 832	-M3	27.Bc3 Qf2+ 28.Kh1 Qf1+ 29.Ng1 Nf2+
 67/25	04:56	3 386 379 928	11 404 832	-M12	27.Rc1 Ng4 28.h3 Qf2+ 29.Kh1 Qxe3 30.hxg4 Nf2+ 31.Kh2 Nxg4+ 32.Kh1 Kg7 33.Qc8 Rxc8 34.Rxc8 Qxe2 35.Rc1 Ne3 36.Rc2 Qxc2 37.Bxd5 exd5 38.Kh2 Qxg2+
 67/33	04:56	3 386 379 928	11 404 832	-M16	27.h3 Qf2+ 28.Kh2 Nd2 29.Kh1 Qxe2 30.Rc1 Nfe4 31.Bxd5 exd5 32.Qxd5 Ng3+ 33.Kh2 Qf2 34.Qc6 Ndf1+ 35.Rxf1 Nxf1+ 36.Kh1 Ng3+ 37.Kh2 Ne2 38.Qc1 Nxc1 39.Bxc1 Rc8 40.d5 Rc2 41.Bd2 Rxd2 42.Kh1 Qxg2+
 67/35	04:56	3 386 379 928	11 404 832	-M17	27.g3 Qg4 28.Rc2 Qf3 29.Nc3 Ng4 30.Bxd5 Ngf2 31.Kf1 exd5 32.Qxd5 Rc8 33.Qxe4 Nxe4+ 34.Kg1 Rxc3 35.Bxc3 Qd1+ 36.Be1 Qxc2 37.Kf1 Qd3+ 38.Kg2 Qe2+ 39.Kg1 Qxe1+ 40.Kg2 Qe2+ 41.Kh3 Qf3 42.a4 Nf2+ 43.Kh4 Qg4+
 67/51	04:56	3 386 379 928	11 404 832	-M25	27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Kc5 Qxa3+ 37.Kb6 Qxa2 38.Qa7 Qc4 39.Qc7 Qa4 40.Qa7 Qxd4+ 41.Ka6 Qxf4 42.Qe7 Qa4+ 43.Kb6 Rb8+ 44.Qb7 Rxb7+ 45.Kxb7 Qxb5+ 46.Kc7 Nd3 47.g3 Nc5 48.g4 Qb7+ 49.Kd6 Ne4+ 50.Ke5 Qc7+ 51.Kd4 Qc3+

Just did a bit of an experiment with Brainlearn 8.0. Started with a 15m+10s game vs a recent Stockfish build. Then a number of selfplay games
against itself very gradually increasing the time control.

Last step was to back up the experience.bin file and then infinite analysis from the start pos.

Best it could find was #22 this is using 4 threads.

Analysis by BrainLearn 8.0 64 BMI2:

26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Ba1 Qxg2+ 33.Kd3 Ne1+ 34.Ke3 Qxa2 35.Qc6 Qxa1 36.Kf2 Qxa3 37.Kxe1 Ra8 38.Qxa8+ Qxa8 39.Kd2 Qa2+ 40.Ke3 Qa3+ 41.Ke2 Qxb4 42.Kd3 Qxd4+ 43.Kc2 Qxf4 44.Kb3 Qd2 45.Ka3 Qb2+ 46.Ka4 Qb4+ 47.Kxb4
Black is clearly winning: -+ (-148.87) Depth: 46/55 00:01:57 992MN, tb=765528
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Ba1 Qxg2+ 33.Kd3 Ne1+ 34.Ke3 Qxa2 35.Qc6 Qxa1 36.Kf2 Qxa3 37.Kxe1 Ra8 38.Qxa8+ Qxa8 39.Kd2 Qa2+ 40.Ke3 Qa3+ 41.Ke2 Qxb4 42.Kd3 Qxd4+ 43.Kc2 Qxf4 44.Kb3 Qd2 45.Ka3 Qb2+ 46.Ka4 Qb4+ 47.Kxb4
Black mates: -+ (-#42 ++) Depth: 47/50 00:01:57 992MN, tb=765619
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Kc5 Qxc3+ 39.Kb6 Qxa3 40.Qc5 Qa8 41.Qd6 Rd8 42.Qc7 Rb8+ 43.Qxb8+ Qxb8+ 44.Kc6 Qxb4 45.g3 Nc3 46.f5 Qc4+ 47.Kd6 Nb5+ 48.Ke7 Qc7+ 49.Kf6 Qd8+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 47/52 00:02:06 1026MN, tb=884288
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Kc5 Qxc3+ 39.Kb6 Qxa3 40.Qc5 Qa8 41.Qd6 Rd8 42.Qc7 Rb8+ 43.Qxb8+ Qxb8+ 44.Kc6 Qxb4 45.g3 Nc3 46.f5 Qc4+ 47.Kd6 Nb5+ 48.Ke7 Qc7+ 49.Kf6 Qd8+ 50.Ke5 Qd4#
Black is clearly winning: -+ (-149.07 --) Depth: 48/50 00:02:07 1035MN, tb=921133
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Kc5 Qxc3+ 39.Kb6 Qxa3 40.Qc5 Qa8 41.Qd6 Rd8 42.Qc7 Rb8+ 43.Qxb8+ Qxb8+ 44.Kc6 Qxb4 45.g3 Nc3 46.f5 Qc4+ 47.Kd6 Nb5+ 48.Ke7 Qc7+ 49.Kf6 Qd8+ 50.Ke5 Qd4#
Black mates: -+ (-#48 ++) Depth: 48/50 00:02:07 1035MN, tb=922673
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 48/50 00:02:09 1051MN, tb=1083446
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Kc5 Qxc3+ 39.Kb6 Qxa3 40.Qc5 Qa8 41.Qd6 Rd8 42.Qc7 Rb8+ 43.Qxb8+ Qxb8+ 44.Kc6 Qxb4 45.g3 Nc3 46.f5 Qc4+ 47.Kd6 Nb5+ 48.Ke7 Qc7+ 49.Kf6 Qd8+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 49/50 00:02:11 1061MN, tb=1102067
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Kc5 Qxc3+ 39.Kb6 Qxa3 40.Qc5 Qa8 41.Qd6 Rd8 42.Qc7 Rb8+ 43.Qxb8+ Qxb8+ 44.Kc6 Qxb4 45.g3 Nc3 46.f5 Qc4+ 47.Kd6 Nb5+ 48.Ke7 Qc7+ 49.Kf6 Qd8+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 50/50 00:02:14 1082MN, tb=1130217
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 51/54 00:02:22 1140MN, tb=1509099
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 52/50 00:02:29 1184MN, tb=1561051
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 53/50 00:02:38 1244MN, tb=1688393
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 54/50 00:02:43 1276MN, tb=1723978
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Ke7 Nxf5+ 47.Kf6 Qc3+ 48.Kg5 Qg3+ 49.Kf6 Qh4+ 50.Ke5 Qd4#
Black mates: -+ (-#25) Depth: 55/50 00:02:53 1343MN, tb=1857858
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.Kc5 Qc4+ 43.Kb6 Qxb5+ 44.Kc7 Qa5+ 45.Kd6 Rd8+ 46.Qd7 Qb4+ 47.Ke5 Nc6+ 48.Qxc6 Qe4+ 49.Kf6 Qxf5+ 50.Ke7 Qg5#
Black mates: -+ (-#25) Depth: 56/50 00:03:47 1688MN, tb=2303081
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.g3 Qxb5+ 43.Kc7 Qc5+ 44.Kd7 Nf3 45.Qc7 Ne5+ 46.Qxe5 Qc8+ 47.Kd6 Rd8+ 48.Ke7 Rd7+ 49.Kf6 Qd8#
Black mates: -+ (-#24) Depth: 57/48 00:03:48 1695MN, tb=2345112
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.g3 Qxb5+ 43.Kc7 Qc5+ 44.Kd7 Nf3 45.Qc7 Ne5+ 46.Qxe5 Qc8+ 47.Kd6 Rd8+ 48.Ke7 Rd7+ 49.Kf6 Qd8#
Black mates: -+ (-#24) Depth: 58/48 00:03:52 1721MN, tb=2424919
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Bc1 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Qxc1 35.b5 Ne1+ 36.Kb4 Qb2+ 37.Bb3 Nc2+ 38.Ka5 Qxb3 39.a4 Qb4+ 40.Kb6 Nxd4 41.f5 Qxa4 42.g3 Qxb5+ 43.Kc7 Qc5+ 44.Kd7 Nf3 45.Qc7 Ne5+ 46.Qxe5 Qc8+ 47.Kd6 Rd8+ 48.Ke7 Rd7+ 49.Kf6 Qd8#
Black mates: -+ (-#24) Depth: 59/48 00:04:10 1832MN, tb=2943549
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Qxc3+ 39.Kb5 Qxa3 40.f5 Nd4+ 41.Kc4 Rd8 42.Kc5 Qc3+ 43.Kb6 Qxb4+ 44.Ka6 Rd6+ 45.Ka7 Qa5+ 46.Kb8 Rd8+ 47.Qc8 Qb6+ 48.Ka8 Rxc8#
Black mates: -+ (-#23) Depth: 60/48 00:05:16 2280MN, tb=4335554
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Qxc3+ 39.Kb5 Qxa3 40.f5 Nd4+ 41.Kc4 Rd8 42.Kc5 Qc3+ 43.Kb6 Qxb4+ 44.Ka6 Rd6+ 45.Ka7 Qa5+ 46.Kb8 Rd8+ 47.Qc8 Qb6+ 48.Ka8 Rxc8#
Black mates: -+ (-#23) Depth: 61/46 00:05:53 2473MN, tb=5345339
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Nxc3 39.Kc5 Qd3 40.Kb6 Nd5+ 41.Ka5 Qxa3+ 42.Kb5 Rd8 43.Qxd5 Rxd5+ 44.Kb6 Qxb4+ 45.Kc7 Qc5+ 46.Kb8 Qb6+ 47.Kc8 Rd8#
Black mates: -+ (-#22) Depth: 62/46 00:06:25 2660MN, tb=5701759
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Nxc3 39.Kc5 Qd3 40.Kb6 Nd5+ 41.Ka5 Qxa3+ 42.Kb5 Rd8 43.Qxd5 Rxd5+ 44.Kb6 Qxb4+ 45.Kc7 Qc5+ 46.Kb8 Qb6+ 47.Kc8 Rd8#
Black mates: -+ (-#22) Depth: 63/44 00:06:35 2720MN, tb=5736816
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Nxc3 39.Kc5 Qd3 40.Kb6 Nd5+ 41.Ka5 Qxa3+ 42.Kb5 Rd8 43.Qxd5 Rxd5+ 44.Kb6 Qxb4+ 45.Kc7 Qc5+ 46.Kb8 Qb6+ 47.Kc8 Rd8#
Black mates: -+ (-#22) Depth: 64/44 00:07:16 2933MN, tb=5844745
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Nxc3 39.Kc5 Qd3 40.Kb6 Nd5+ 41.Ka5 Qxa3+ 42.Kb5 Rd8 43.Qxd5 Rxd5+ 44.Kb6 Qxb4+ 45.Kc7 Qc5+ 46.Kb8 Qb6+ 47.Kc8 Rd8#
Black mates: -+ (-#22) Depth: 65/44 00:07:24 2983MN, tb=5859837
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Qc7 Qe1+ 33.Kd3 Qd1+ 34.Kc3 Nxd4 35.Bc4 dxc4 36.Kxc4 Qc2+ 37.Bc3 Ne2 38.Qb7 Nxc3 39.Kc5 Qd3 40.Kb6 Nd5+ 41.Ka5 Qxa3+ 42.Kb5 Rd8 43.Qxd5 Rxd5+ 44.Kb6 Qxb4+ 45.Kc7 Qc5+ 46.Kb8 Qb6+ 47.Kc8 Rd8#
Black mates: -+ (-#22) Depth: 66/44 00:09:02 3483MN, tb=6641769
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Bb3 Nc2+ 37.Ka5 Qxb3 38.a4 Qb4+ 39.Kb6 Nxd4 40.f5 Qxa4 41.g3 Qxb5+ 42.Kc7 Qc5+ 43.Kd7 Nf3 44.Qc7 Ne5+ 45.Qxe5 Qc8+ 46.Kd6 Rd8+ 47.Ke7 Rd7+ 48.Kf6 Qd8#
Black mates: -+ (-#23) Depth: 67/46 00:09:49 3732MN, tb=6663873
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Ka5 Qxa3+ 37.Kb6 Qxa2 38.Qc7 Qxg2 39.f5 gxf5 40.Qf4 Nf3 41.Ka6 Qf2 42.Kb7 f6 43.Ka6 Qxd4 44.Qxd4 Nxd4 45.b6 f4 46.b7 f3 47.Ka7 f2 48.b8Q Rxb8 49.Kxb8 f1Q 50.Kb7 Qb5+ 51.Kc8 Qb6 52.Kd7 Kf7 53.Kc8 Nb5 54.Kd7 Qc7#
Black mates: -+ (-#29) Depth: 68/78 00:22:20 7885MN, tb=91103177
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Ka5 Qxa3+ 37.Kb6 Qxa2 38.Kc7 Qc4+ 39.Qc6 Nc2 40.Qxc4 dxc4 41.d5 Nd4 42.dxe6 fxe6 43.Kd6 c3 44.Ke5 c2 45.Kxd4 c1Q 46.f5 Rxf5 47.g3 Rf3 48.Ke5 Qc3+ 49.Kxe6 Qd4 50.Ke7 Re3#
Black mates: -+ (-#25) Depth: 69/50 00:22:40 7993MN, tb=91394646
26...Qh4 27.Ng3 Ng4 28.Kf1 Nxg3+ 29.hxg3 Qxg3 30.Rc2 Nxe3+ 31.Ke2 Nxc2 32.Kd2 Qf2+ 33.Kc3 Ne1 34.b5 Qc2+ 35.Kb4 Qxb2+ 36.Ka5 Qxa3+ 37.Kb6 Qxa2 38.Kc7 Qc4+ 39.Qc6 Nc2 40.Qxc4 dxc4 41.d5 Nd4 42.dxe6 fxe6 43.Kd6 c3 44.Ke5 c2 45.Kxd4 c1Q 46.f5 Rxf5 47.g3 Rf3 48.Ke5 Qc3+ 49.Kxe6 Qd4 50.Ke7 Re3#
Black mates: -+ (-#25) Depth: 70/50 00:23:00 8111MN, tb=91740326

(, 05.06.2020)

So this sort of learning might be an option for postions where a TB or other mate score can be found quickly, but further progress is extremely difficult. Just need more engines with learning!

Andrew

[xr_a_y]

A clear win for white ?

[d] rn1rbk2/5p1Q/p3p2P/1pb3P1/5P2/1P2P3/P1PP4/2K5 w - - 0 1

with soon a second queen, will white grab back all pieces on the board ?