Nice 5 mover

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peter
Posts: 3206
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Nice 5-mover.

Post by peter »

Ajedrecista wrote: Mon May 27, 2024 8:57 pm Black is not forced to capture the knight, of course.
And seeing the game going on about 50 moves to win that after e.g. 1...d5 instead of ...Kxf7, even for a study, taking the sac should get at least a ?!, did let SF play out with 45'+5", that was the result:

[pgn][Event "5mover Jouni"]
[Site "?"]
[Date "2008.??.??"]
[Round "?"]
[White "Unknown, Author"]
[Black "1move, less"]
[Result "1-0"]
[Annotator "SF"]
[SetUp "1"]
[FEN "1nbqrk2/1pprb1pp/3p1ppN/1P6/1PR1QPP1/1PR1PB2/3P2P1/3K3N w - - 0 1"]
[PlyCount "103"]
[EventDate "2008.??.??"]
[SourceTitle "Talkchess"]

1. Nf7 d5 (1... Kxf7 $6 2. Qe6+ Kxe6 3. Bd5+ Kxd5 4. Re4 Kxe4 5. Rd3 Kxd3 6. Nf2#) 2. Nxd8 dxe4 3. Ne6+ Kf7 4. Rxe4 f5 5. Re5 Bf6 6. Ng5+ Bxg5 7. Rxe8 Kxe8 8. fxg5 Kd8 9. Rc4 Re7 10. gxf5 gxf5 11. Rd4+ Nd7 12. Ng3 g6 13. Ne2 Re6 14. Kc2 Ke8 15. Rh4 Re7 16. Nf4 Nb6 17. Kc3 Kf8 18. Nd3 Bd7 19. Bxb7 Bxb5 20. Bf3 Ke8 21. Nc5 Kf8 22. Kd4 Bd7 23. e4 fxe4 24. Rxe4 Rf7 25. Re5 Kg7 26. Nxd7 Rxd7+ 27. Kc5 h6 28. gxh6+ Kxh6 29. Kc6 Rf7 30. Re8 Kg5 31. b5 Nd7 32. d4 Nb6 33. Rd8 Kf4 34. d5 g5 35. d6 g4 36. dxc7 gxf3 37. gxf3 Rf6+ 38. Rd6 Rxd6+ 39. Kxd6 Nc8+ 40. Kc6 Na7+ 41. Kc5 Nc8 42. b6 Nxb6 43. Kxb6 Kxf3 44. c8=Q Kf4 45. Kb5 Kg5 46. Kc5 Kf4 47. Kd4 Kf3 48. Qf5+ Ke2 49. Qf6 Kd1 50. Qf2 Kc1 51. Kc3 Kb1 52. Qb2# 1-0
[/pgn]

SF dev. takes 4" single threaded (3.5GHz HT on) for the #5 after 1...Kxf7?:

[d]1nbqr3/1pprbkpp/3p1pp1/1P6/1PR1QPP1/1PR1PB2/3P2P1/3K3N w - - 0 1

Analysis by Stockfish dev-20240505-f1612612:

Code: Select all

2.Td4 d5 3.Txd5 Txd5 4.Dxd5+ Kf8 
  Schwarz hat entscheidenden Vorteil.  
  -+ (-3.16)  Tiefe: 10/8   00:00:00
...
2.Dd5+ Kf8 3.Le2 g5 4.e4 f5 5.Th3 Lf6 6.fxg5 Le5 7.exf5 c6 8.Df3 d5 9.Tc5 Dxg5 10.Txh7 Td6 11.Th5 Df4 
  Schwarz steht deutlich besser.  
  -+ (-1.91 ++)  Tiefe: 25/44   00:00:04  4578kN
2.De6+ 
  Schwarz steht deutlich besser.  
  -+ (-1.76 ++)  Tiefe: 25/47   00:00:04  4866kN
...
2.De6+ 
  Schwarz steht etwas besser.  
  =/+ (-0.40 ++)  Tiefe: 25/47   00:00:04  4871kN
2.De6+ 
  Die Stellung ist ausgeglichen.  
  = (0.22 ++)  Tiefe: 25/47   00:00:04  4872kN
2.De6+ 
  Weiß steht besser.  
  +/- (1.04 ++)  Tiefe: 25/47   00:00:04  4873kN
...
2.De6+ 
  Weiß steht klar auf Gewinn.  
  +- (8.09 ++)  Tiefe: 25/47   00:00:04  4875kN
2.De6+ Kxe6 3.Ld5+ Kxd5 4.Te4 Kxe4 5.Td3 Kxd3 
  Weiß setzt Matt.  
  +- (#5)  Tiefe: 25/47   00:00:04  4876kN
2.De6+ Kxe6 3.Ld5+ Kxd5 4.Te4 Kxe4 5.Td3 Kxd3 6.Sf2# 
  Weiß setzt Matt.  
  +- (#5)  Tiefe: 26/10   00:00:04  4904kN
...
2.De6+ Kxe6 3.Ld5+ Kxd5 4.Te4 Kxe4 5.Td3 Kxd3 6.Sf2# 
  Weiß setzt Matt.  
  +- (#5)  Tiefe: 99/10   00:00:09  36104kN
Peter.
chessica
Posts: 710
Joined: Thu Aug 11, 2022 11:30 pm
Full name: Esmeralda Pinto

Re: Nice 5 mover

Post by chessica »

[d]1nbqr3/1pprbkpp/3p1pp1/1P6/1PR1QPP1/1PR1PB2/3P2P1/3K3N w - - 0 1

Steel-Fighter:


NNUE evaluation using nn-ea6ac98d29d4.nnue (132MiB, (22528, 3072, 15, 32, 1))
NNUE evaluation using nn-321bbccb5bcf.nnue (6MiB, (22528, 128, 15, 32, 1))

28/42 00:33,400 6.323k 189k +M5 De4-e6+ Kf7xe6 Lf3-d5+ Ke6xd5 Tc4-e4 Kd5xe4 Tc3-d3 Ke4xd3 Sh1-f2+
chessica
Posts: 710
Joined: Thu Aug 11, 2022 11:30 pm
Full name: Esmeralda Pinto

Re: Nice 5 mover

Post by chessica »

[d]1nbqr3/1pprbkpp/3p1pp1/1P6/1PR1QPP1/1PR1PB2/3P2P1/3K3N w - - 0 1

Uralochka3.41a:


...
31/64+ 12:22,072 39.394k 53k -0,99 De4-e6+ Kf7-f8 Lf3-d5 h7-h5
31/64+ 12:22,083 39.395k 53k -0,77 De4-e6+ Kf7-f8 Lf3-d5 b7-b6
31/64+ 12:22,094 39.395k 53k -0,03 De4-e6+ Kf7-f8 Lf3-d5 Sb8-c6
31/64+ 12:22,104 39.395k 53k +0,30 De4-e6+ Kf7-f8 Lf3-d5 Sb8-a6
31/64+ 12:22,115 39.395k 53k +0,74 De4-e6+ Kf7-f8 Lf3-d5 Sb8-c6
31/64+ 12:22,125 39.396k 53k +1,28 De4-e6+ Kf7-f8 Lf3-d5 Sb8-a6
31/64+ 12:22,135 39.396k 53k +1,98 De4-e6+ Kf7-f8 Lf3-d5 Sb8-c6
31/64+ 12:22,146 39.396k 53k +M5 De4-e6+ Kf7xe6 Lf3-d5+ Ke6xd5 Tc4-e4 Kd5xe4 Tc3-d3 c7-c6 Sh1-f2+
31/64 12:27,337 39.655k 53k +M5 De4-e6+ Kf7xe6 Lf3-d5+ Ke6xd5 Tc4-e4 Kd5xe4 Tc3-d3 c7-c6 Sh1-f2+