Other fun mates

[xr_a_y]

What means 10 times > profound: 64000

All 10 threads are saying that it seems.

[MikeB]

debut output for each thread, testing a new parameter..

[MikeB]

A mate in #10 at move 13

[d] rn1q1r2/pb2np1k/1p2p1pp/2pp3P/5PP1/1PBBPN2/P1PPQ3/R3K2R w KQ - 1 13

just for kicks - all 64 threads

g i m 10 -> these are shortcut keys meaning "go infinite mate 10" it will stop automatically as soon as mate -in 10 is found
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
profound: 64000
info depth 1 seldepth 1 multipv 1 score cp 1136 nodes 19107 nps 4776750 tbhits 0 time 4 pv h5g6 e7g6
profound: 64000
info depth 2 seldepth 2 multipv 1 score cp 2099 nodes 45589 nps 9117800 tbhits 0 time 5 pv e2h2 f7f6 h5g6 h7g8
profound: 64000
info depth 3 seldepth 4 multipv 1 score cp 1160 nodes 88264 nps 14710666 tbhits 0 time 6 pv e2h2 e7g8 h5g6 f7g6
info depth 4 seldepth 5 multipv 1 score cp 1594 nodes 143081 nps 17885125 tbhits 0 time 8 pv e2h2 f8h8
info depth 5 seldepth 6 multipv 1 score cp 1057 nodes 175297 nps 21912125 tbhits 0 time 8 pv h5g6 h7g8 e2h2 f7g6 h2h6 g8f7
info depth 6 seldepth 9 multipv 1 score cp 2488 nodes 3366685 nps 90991486 tbhits 0 time 37 pv h5g6 h7g8 e2h2 e7g6 h2h6
info depth 7 seldepth 14 multipv 1 score cp 2415 nodes 3385326 nps 91495297 tbhits 0 time 37 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8f7
info depth 8 seldepth 13 multipv 1 score cp 2415 nodes 3393977 nps 91729108 tbhits 0 time 37 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8f7 e6d8 f7e7 d8b7
info depth 9 seldepth 12 multipv 1 score cp 2788 nodes 3416874 nps 89917736 tbhits 0 time 38 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5
info depth 10 seldepth 21 multipv 1 score cp 2383 nodes 3449758 nps 90783105 tbhits 0 time 38 pv e2h2 h7g8 h5g6 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8f7 e6d8 f7f8 g4h5
info depth 11 seldepth 16 multipv 1 score cp 2386 nodes 3462140 nps 91108947 tbhits 0 time 38 pv e2h2 h7g8 h5g6 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8e7 h2h4 g6g5
info depth 12 seldepth 12 multipv 1 score cp 2764 nodes 3509918 nps 92366263 tbhits 0 time 38 pv e2h2 h7g8 h5g6 e7g6 h2h6 d8h4 h1h4
info depth 13 seldepth 23 multipv 1 score cp 2420 nodes 3560433 nps 91293153 tbhits 0 time 39 pv e2h2 h7g8 h5g6 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8f7 e6d8 f7e7 d8b7 b8a6 g4h5 e7d7 h2h3 d7c7 h3e6
info depth 14 seldepth 21 multipv 1 score cp 2389 nodes 3601956 nps 92357846 tbhits 0 time 39 pv e2h2 h7g8 h5g6 f7g6 f3g5 e7f5 d3f5 h6h5 f5e6 f8f7 e6f7 g8f8 g5e6 f8f7 e6d8 f7e8 d8b7 e8d7 g4h5 b8c6 h5g6
info depth 15 seldepth 12 multipv 1 score cp 3472 nodes 3654306 nps 91357650 tbhits 0 time 40 pv e2h2 h7g8 h5g6 f7g6 f3g5 e7f5 d3f5 h6h5 h2h5
info depth 16 seldepth 20 multipv 1 score cp 3408 nodes 4231294 nps 94028755 tbhits 0 time 45 pv e2h2 h7g8 h5g6 f7g6 f3g5 h6h5 g4h5 f8f5 h5g6 g8f8 h2h8 e7g8 d3f5 f8e7 h1h7 e7d6 g5f7 d6c7 h8e5 c7c8
info depth 17 seldepth 22 multipv 1 score cp 3923 nodes 4393382 nps 95508304 tbhits 0 time 46 pv h5g6 h7g8 e2h2 f7g6 f3g5 h6h5 g4h5 f8f5 h5g6 g8f8 h2h8 e7g8 d3f5 f8e7 h1h7 e7d6
info depth 18 seldepth 23 multipv 1 score mate 12 nodes 4476623 nps 95247297 tbhits 0 time 47 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 d8g5 f5e6 f8f7 f4g5 h6h5 g4h5 d5d4 h5g6 g8f8 h2d6 f8g7 h1h7 g7g6 e6f7 g6h7
info depth 19 seldepth 23 multipv 1 score mate 12 nodes 4581317 nps 97474829 tbhits 0 time 47 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 d8g5 f5e6 f8f7 f4g5 h6h5 g4h5 d5d4 h5g6 g8f8 h2d6 f8g7 h1h7 g7g6 e6f7 g6h7
info depth 19 seldepth 24 multipv 1 score mate 10 nodes 4581324 nps 95444250 tbhits 0 time 48 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 d8g5 f5e6 f8f7 f4g5 g8f8 h2d6 f8e8 e6f7 e8f7 h1f1 f7e8 f1f8
bestmove h5g6 ponder h7g8

[MikeB]

and current dev Black-Diamond,

with 1 thread:

info depth 14 seldepth 29 multipv 1 score mate 10 nodes 1003118 nps 2682133 tbhits 0 time 374 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 d8g5 f5e6 f8f7 f4g5 g8f8 h2d6 f8e8 e6f7 e8f7 h1f1 f7e8 f1f8
bestmove h5g6 ponder h7g8

all 64 threads:
info depth 12 seldepth 26 multipv 1 score mate 10 nodes 3539119 nps 107246030 tbhits 0 time 33 pv h5g6 h7g8 e2h2 f7g6 f3g5 e7f5 d3f5 d8g5 f5e6 f8f7 f4g5 g8f8 h2d6 f8e8 e6f7 e8f7 h1f1 f7e8 f1f8
bestmove h5g6 ponder h7g8

[xr_a_y]

White is winning here

[d] 2k5/p7/2b5/4B3/4pP2/4P3/q1PPQ3/2KR4 w - - 0 27

because the a1 square is well protected and no perpetual is possible thanks to the dark square white bishop.
But, more than a win, this seems to be a forced mate a #12 ! will your engine get it ?
It seems to be easy for SF11.

Hint : Rh1 is the first move

[Terje]

White is winning here

[d] 2k5/p7/2b5/4B3/4pP2/4P3/q1PPQ3/2KR4 w - - 0 27

because the a1 square is well protected and no perpetual is possible thanks to the dark square white bishop.
But, more than a win, this seems to be a forced mate a #12 ! will your engine get it ?
It seems to be easy for SF11.

Hint : Rh1 is the first move

Weiss gets stuck, hitting a search explosion

With some tweaks to the aspiration window's handling of fail lows it finds #12 in 2.5 minutes.. I'll have to work on this a bit!

[xr_a_y]

Which depth to see this 3 sac mate in  #5

[d] r2q1r2/3b1p2/2nbp1k1/5NP1/1ppP1P2/1p4Q1/PBPP4/2KR3R w - - 4 24

Minic needs only depth 16 (seldepth 38)

[Terje]

Weiss 15/32

Code: Select all

info depth 14 seldepth 24 score cp 70 time 100 nodes 296886 nps 2939465 tbhits 0 hashfull 0 pv f5d6 b3a2 b2a1 a8a3 g3g4 c4c3 d2c3 d8c7 h1h6 g6g7 d4d5 c7d6
info depth 15 seldepth 32 score mate 5 time 635 nodes 1965076 nps 3089742 tbhits 0 hashfull 3 pv h1h6 g6f5 g3h3 f5e4 d1e1 e4f4 e1f1 f4e4 h3g2

Eth 12.07 - 23/31 - 2.5m nodes

SF11 - 11/12 - 12k nodes

[zullil]

Weiss 15/32

Code: Select all

info depth 14 seldepth 24 score cp 70 time 100 nodes 296886 nps 2939465 tbhits 0 hashfull 0 pv f5d6 b3a2 b2a1 a8a3 g3g4 c4c3 d2c3 d8c7 h1h6 g6g7 d4d5 c7d6
info depth 15 seldepth 32 score mate 5 time 635 nodes 1965076 nps 3089742 tbhits 0 hashfull 3 pv h1h6 g6f5 g3h3 f5e4 d1e1 e4f4 e1f1 f4e4 h3g2

Eth 12.07 - 23/31 - 2.5m nodes

SF11 - 11/12 - 12k nodes

Stockfish-dev (with default settings) first reports an incorrect mate-in-4 score at 17505 nodes, followed by a mate-in-5 score at 18992 nodes.

Code: Select all

$ ./stockfish 
Stockfish 190420 64 BMI2 by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
position fen r2q1r2/3b1p2/2nbp1k1/5NP1/1ppP1P2/1p4Q1/PBPP4/2KR3R w - - 4 24
d

 +---+---+---+---+---+---+---+---+
 | r |   |   | q |   | r |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   | b |   | p |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   | n | b | p |   | k |   |
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   | N | P |   |
 +---+---+---+---+---+---+---+---+
 |   | p | p | P |   | P |   |   |
 +---+---+---+---+---+---+---+---+
 |   | p |   |   |   |   | Q |   |
 +---+---+---+---+---+---+---+---+
 | P | B | P | P |   |   |   |   |
 +---+---+---+---+---+---+---+---+
 |   |   | K | R |   |   |   | R |
 +---+---+---+---+---+---+---+---+

Fen: r2q1r2/3b1p2/2nbp1k1/5NP1/1ppP1P2/1p4Q1/PBPP4/2KR3R w - - 4 24
Key: 827C91B0B715BACA
Checkers: 
go infinite
info depth 1 seldepth 1 multipv 1 score cp 796 nodes 136 nps 45333 tbhits 0 time 3 pv f5d6 b3c2
info depth 2 seldepth 2 multipv 1 score cp 796 nodes 201 nps 67000 tbhits 0 time 3 pv f5d6 b3c2
info depth 3 seldepth 3 multipv 1 score cp 158 nodes 393 nps 131000 tbhits 0 time 3 pv d4d5 e6f5 d5c6 d7c6
info depth 4 seldepth 4 multipv 1 score cp 269 nodes 482 nps 160666 tbhits 0 time 3 pv d4d5 e6f5 d5c6 b3c2
info depth 5 seldepth 5 multipv 1 score cp 496 nodes 588 nps 196000 tbhits 0 time 3 pv f5d6 b3a2 f4f5 g6g7
info depth 6 seldepth 7 multipv 1 score cp 544 nodes 1151 nps 287750 tbhits 0 time 4 pv f5e3 b3c2 f4f5 e6f5
info depth 7 seldepth 10 multipv 1 score cp 923 nodes 1564 nps 312800 tbhits 0 time 5 pv f5d6 b3a2 b2a1
info depth 8 seldepth 12 multipv 1 score cp 936 nodes 6325 nps 486538 tbhits 0 time 13 pv f5d6 f8h8 a2b3 c4c3 d2c3 g6g7 c3b4 h8h1 d4d5 g7f8 d1h1 e6d5
info depth 9 seldepth 14 multipv 1 score cp 915 nodes 14465 nps 803611 tbhits 0 time 18 pv f5d6 b3c2 c1c2 b4b3 a2b3 c6b4 c2b1 c4b3
info depth 10 seldepth 11 multipv 1 score cp 2025 nodes 16384 nps 819200 tbhits 0 time 20 pv g3g4 f7f6
info depth 11 seldepth 8 multipv 1 score mate 4 nodes 17505 nps 875250 tbhits 0 time 20 pv g3g4 f7f6
info depth 12 seldepth 10 multipv 1 score mate 5 nodes 18992 nps 904380 tbhits 0 time 21 pv g3g4 f8h8 h1h6 h8h6 g5h6 d8g5 g4g5 g6h7 g5g7

[xr_a_y]

Mate in #8

[d] 4k3/8/8/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/RNBQKBNR w KQ - 0 1

If it's too hard, try this

[d] 4k3/8/8/1p1p1p1p/pPpPpPpP/P1P1P1P1/8/3QKB2 w - - 0 1