Kann sich noch jemand freuen ...

By Jörg Oster Date 2021-05-01 19:14 Upvotes 2

Stockfish-MOJO braucht immerhin Tiefe 22.

Engine:

position fen 8/2P5/5p2/2P5/1p2pP2/PR2P3/pb6/rk1K4 w - - 0 1
d

 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   |   |   |   | 8
 +---+---+---+---+---+---+---+---+
 |   |   | P |   |   |   |   |   | 7
 +---+---+---+---+---+---+---+---+
 |   |   |   |   |   | p |   |   | 6
 +---+---+---+---+---+---+---+---+
 |   |   | P |   |   |   |   |   | 5
 +---+---+---+---+---+---+---+---+
 |   | p |   |   | p | P |   |   | 4
 +---+---+---+---+---+---+---+---+
 | P | R |   |   | P |   |   |   | 3
 +---+---+---+---+---+---+---+---+
 | p | b |   |   |   |   |   |   | 2
 +---+---+---+---+---+---+---+---+
 | r | k |   | K |   |   |   |   | 1
 +---+---+---+---+---+---+---+---+
   a   b   c   d   e   f   g   h

Fen: 8/2P5/5p2/2P5/1p2pP2/PR2P3/pb6/rk1K4 w - - 0 1
PositionKey: 1DD2B2C33E58C6F0
MaterialKey: 7F1F93ABAEBDFC06
PawnKey:     97AF096DCCA714B4
Checkers: 
Legal moves: 15
go mate 4
info string Hybrid evaluation enabled using nn-62ef826d1a6d.nnue
info depth 1 seldepth 2 multipv 1 score cp 567 nodes 20 nps 20000 tbhits 0 time 1 pv c7c8q b4a3
info depth 2 seldepth 3 multipv 1 score cp 686 nodes 56 nps 56000 tbhits 0 time 1 pv a3b4 f6f5
info depth 3 seldepth 3 multipv 1 score cp 686 nodes 123 nps 61500 tbhits 0 time 2 pv a3b4 f6f5 c7c8q
info depth 4 seldepth 5 multipv 1 score cp 636 nodes 344 nps 172000 tbhits 0 time 2 pv c7c8q b4a3 b3a3 f6f5
info depth 5 seldepth 5 multipv 1 score cp 648 nodes 383 nps 191500 tbhits 0 time 2 pv c7c8q b4a3 c8e6 f6f5
info depth 6 seldepth 7 multipv 1 score cp 648 nodes 674 nps 337000 tbhits 0 time 2 pv c7c8q b4a3 b3b8 f6f5 b8a8
info depth 7 seldepth 9 multipv 1 score cp 635 nodes 786 nps 393000 tbhits 0 time 2 pv c7c8q b4a3 b3b8 f6f5 b8a8 b2f6 c8f5
info depth 8 seldepth 12 multipv 1 score cp 660 nodes 1210 nps 403333 tbhits 0 time 3 pv c7c8q b4a3 b3b8 f6f5 d1e2 b1c2
info depth 9 seldepth 12 multipv 1 score cp 721 nodes 1463 nps 487666 tbhits 0 time 3 pv c7c8q b4a3 b3b4 f6f5 d1e2 b1c2 c8f5
info depth 10 seldepth 15 multipv 1 score cp 940 nodes 1675 nps 558333 tbhits 0 time 3 pv c7c8q b4a3 b3b4 f6f5 d1e2 b1c2 c8f5 c2c1 f5e4
info depth 11 seldepth 18 multipv 1 score cp 758 nodes 3897 nps 649500 tbhits 0 time 6 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c4c3 b1b2 d1d2 a1b1 c8b7 b2a1 b7d5 b1b2 c3c2
info depth 12 seldepth 20 multipv 1 score mate 5 nodes 8072 nps 807200 tbhits 0 time 10 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 13 seldepth 9 multipv 1 score mate 5 nodes 8184 nps 818400 tbhits 0 time 10 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 14 seldepth 9 multipv 1 score mate 5 nodes 9503 nps 791916 tbhits 0 time 12 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 15 seldepth 9 multipv 1 score mate 5 nodes 10727 nps 825153 tbhits 0 time 13 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 16 seldepth 9 multipv 1 score mate 5 nodes 13170 nps 878000 tbhits 0 time 15 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 17 seldepth 9 multipv 1 score mate 5 nodes 17999 nps 899950 tbhits 0 time 20 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 18 seldepth 9 multipv 1 score mate 5 nodes 22372 nps 972695 tbhits 0 time 23 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 19 seldepth 9 multipv 1 score mate 5 nodes 27627 nps 1023222 tbhits 0 time 27 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 20 seldepth 9 multipv 1 score mate 5 nodes 34794 nps 1122387 tbhits 0 time 31 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 21 seldepth 9 multipv 1 score mate 5 nodes 43066 nps 1196277 tbhits 0 time 36 pv c7c8q b4a3 b3b4 f6f5 b4c4 b2c3 c8b7 c3b2 c4c1
info depth 22 seldepth 9 multipv 1 score mate 4 nodes 47160 nps 1241052 tbhits 0 time 38 pv c7c8b b4a3 b3b8 f6f5 c8b7 b2c3 b7e4
bestmove c7c8b ponder b4a3

By Tommy Tulpe Date 2021-05-03 08:55 Upvotes 1

Schöne Aufgabe!

By Tommy Tulpe Date 2021-05-03 22:02

Ich habe ziemlich lang gebraucht, konnte die Aufgabe dann doch ohne Computer lösen.
Hilfreich ist, dass Schwarz nicht besonders viele Züge zur Auswahl hat.

By Roland Riener Date 2021-05-03 23:34

Alle Achtung vor deinen Lösefähigkeiten! Giegold hat eine ganze Serie von ähnlichen Zugzwangaufgaben komponiert, das macht einen besonderen Reiz, weil es so klipp-klapp geht. Auf die Schlüsselidee muß man allerdings zuerst kommen.
Gruß, Roland