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Jesus M Iruzubieta Villaluenga vs David W W Gunter
Lisbon Open (2001), Lisbon POR, rd 4, Aug-24
Tarrasch Defense: Two Knights Variation (D32)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Apr-24-21  Cheapo by the Dozen: Ack. I blew this one. The first move was obvious, but my second was Rxd5, on the incorrect theory that White could chase Black's knight to h6 by pushing g4.

(Had that theory been correct, Black would have been helpless against obvious moves to advance the c-pawn.)

Apr-24-21  Walter Glattke: A) 22.Nxd5 Nxg3 23.hxg3 cxd5 24.c6 Qf5 25.c7 Qc2 26.c8Q Qxd1+ 27.Kg2 ++- B) 22.Nxd5 cxd5 23.c6 Nd6 24.c7 Qf5 25.Rc1 Nxe8 26.c8Q Qxc8 27. Rxc8 Nd6 28.Rc6 ++- C) Match 25.-Nc8 26.a4 d4 27.b5 axb5 28.axb5 d3 29.b6 d2 30.b7 dxc1Q 31.bxc8Q Qxc8 32.Rxc8 Qc6 -+ 26.-h5 considered as lost move
Apr-24-21  mel gibson: It took me over 10 seconds to work this one out.

I guessed right that it was worth investing in a passed pawn.

Stockfish 13 agrees:
22. Nxd5

(22. Nxd5 (♘c3xd5 ♕g5-h5 ♘d5-f4
♕h5xf3 ♖d1-d3 ♕f3-g4 h2-h3 ♕g4-g5 ♖d3-d7 ♔g7-h6 ♖d7xf7 ♘f5xg3 f2xg3 ♕g5xg3+ ♘f4-g2 ♕g3xh3 ♖e8-e3 ♕h3-g4 ♔g1-h2 ♕g4-c4 ♖e3-h3+ ♔h6-g5 ♖f7xh7 ♕c4-e2 ♖h7-f7 ♕e2-b2 ♖f7-f3 ♔g5-g4 ♖f3-f4+ ♔g4-g5 ♖f4-f7 ♕b2-b1 ♖h3-f3 ♔g5-h6 ♖f3-e3 ♕b1-a1 ♖f7-d7 ♕a1-b2 ♖d7-d6 ♔h6-g7 ♔h2-g3 g6-g5 ♖d6-e6 ♕b2-c2 ♖e6xc6 ♕c2-c4 ♖c6-e6 a6-a5 ♖e6-e7+ ♔g7-f8 ♖e7-e4 ♕c4-d5 ♖e4-e8+ ♔f8-f7 ♖e3-e7+ ♔f7-f6) +6.79/45 485)

score for White +6.79 depth 45.

Apr-24-21  stacase: I would have played 23.Rxd5 Tomorrow's "Insane" puzzle must really be nuts.
Apr-24-21  Brenin: 22 Nxd5 didn't take long to come to mind: Black can stop the resulting passed c-pawn with his N, but not the eventual passed b-pawn. Starting the puzzle two moves back with the Q-"sac" 20 Qxe8 would have made this a little harder.
Apr-24-21  erichbf: Does anyone know how to get rid of the huge ads that appear between the game display and the buttons that control? It is making this wonderful site nearly unusable!
Apr-24-21  Walter Glattke: Chess for money or garbage for free - really hopeless that - all over in newspapers or PC-games!
Apr-24-21
Premium Chessgames Member
  chrisowen: Tads keys i hymns Nxd5 ghoster accredited i keys muddles arrives keys tads hymns mads airs raw it war banque quick cj jovial lop its huts keys i mine keys o dopey coz it waft again he keys totup goodness dabbles abracadabra keys an affable pack forth do he Nxd5 dug;
Apr-24-21
Premium Chessgames Member
  pittpanther: Seems that 26 ...d5 rather than h5 puts up more resistance by black.
Apr-24-21  WorstPlayerEver: The position was screaming for Nxd5. So I did not have to think.
Apr-24-21
Premium Chessgames Member
  agb2002: White has both rooks and a pawn for the queen.

The first idea that comes to mind is 22.Nxd5 cxd5 23.c6 Nd6 (23... Qf6 24.c7 Nd6 25.Rxd5 looks desperate for Black) 24.c7 Qf5 (24... Nxe8 25.c8=Q) 25.Rd8:

A) 25... Qe6 26.Rxd6 is winning.

B) 25... Nc8 26.R1xd5 Qxf3 27.Rxc8 Qxd5 28.Rd8 wins decisive material.

C) 25... Qxf3 26.Rc1

C.1) 26... Ne4 27.Rf1 (27.c8=Q Qxf2+ 28.Kh1 Qf3+ and Black has perpetual at least) 27... Nd6 28.Rxd6 Qc3 29.Rd7 Qc6 30.Re7 followed by a4 and b5 is winning.

C.2) 26... Qxa3 27.Rc6 seems to win decisive material.

C.3) 26... Qf6 27.Rxd6 is winning.

Apr-24-21
Premium Chessgames Member
  opus: Pin Knight to Queen, immobilize King, no rush to Queen with pawn majorities

22. Nxd5 cxd5 23. Rxd5 Qh6 24. c6 Qc1+ 25. Kg2 Qxc6 26. Rdd8 Qxe8 27. Rxe8 Nd4 28. h4 Nc2 29. f4 h5 30. Kf3 Nd4+ 31. Ke4 Nf5 32. f3 Nd6+ 33. Kd5 Nb5 34. Kc6 Nxa3 35. Kb6 Nc4+ 36. Kc5 a5 37. b5 a4 38. Ra8 Nb2 39. b6 Kf6 40. Kd5 Ke7 41. b7 Kd7 42. Rc8 a3 43. b8=Q a2 44. Qa8 Na4 45. Rc1 f5 46. Qxa4+ Ke7 47. Rc7+ Kf8 48. Qa8#

Apr-24-21  cormier: SF Depth 28

+1.27 19....Nh4 20.Qe2 Qf6 21.gxh4 Qxc3 22.Qxa6 Qxf3 23.Qd3 Qf4 24.Qd4 Qxd4 25.Rxd4 Ra8 26.Rd3 Ra7 27.Ree3 Rfa8

Apr-24-21  cormier: SF Depth 28

+1.24 18....Re8 19.Qf4 Qf6 20.Ne4 Qe6 21.Ng5 Qe5 22.Qxe5 Rxe5 23.f4 Ree8 24.Nf3 a5 25.g4 Ne7 26.Rb1 axb4

Apr-24-21  cormier: SF Depth 28

+1.42 18.Na4 Re8 19.Qc3 Re6 20.Rae1 Ng7 21.f4 a5 22.Rxe6 axb4 23.axb4 Nxe6 24.Nb6 Qe7 25.Re1 Re8 26.Qb2

Apr-24-21  cormier: SF Depth 40

+2.88 16.Qd3 g6 17.b4 Qc7 18.Qxa6 Qe5 19.Qd3 Ra8 20.Kg2 Rfb8 21.Rfb1 Qd4 22.Qxd4 Nxd4 23.Ra2 g5 24.a4

Apr-24-21  njchess: I got this one. I bet Black really lost it when White took his passed pawn, which he must have been counting on. I say this because Black makes the strange 18. ... ♕g5? over ♖e8. Then, he exchanges his rooks for White's queen, even though his queen is badly placed. I guess he was counting on his passed pawn...
Apr-24-21  cormier: SF Depth 43

+0.79 15....Rb3 16.Rad1 Nf5 17.Qe5 g6 18.Rfe1 h6 19.Re2 Rb7 20.g4 Ng7 21.Qf6 Qxc5 22.b4 Qb6 23.Rc2 Re8

+1.69 15....Qc7 16.b4 a5 17.Rab1 axb4 18.axb4 Rfc8 19.Kg2 Nf5 20.Qd3 g6 21.Rfe1 Kg7 22.Ne2 Qd8 23.b5 cxb5

Apr-24-21
Premium Chessgames Member
  drollere: yes, trading the minor piece for two passed pawns (Nxd5 and Rxd5) looked sensible to me too.
Apr-24-21  cormier: SF Depth 39

+0.81 15.b3 Nf5 16.Qd3 g6 17.Rac1 Rfc8 18.Rfd1 Rb4 19.Kg2 Rd4 20.Qe2 Rxd1 21.Nxd1 Rb8 22.Qe5 Rd8 23.Rc2

Apr-24-21  cormier: SF Depth 30

+1.25 14.a3 Qd8 15.O-O Nf5 16.Qd3 Qf6 17.Rad1 a5 18.f4 g6 19.Na4 Rfe8 20.Rfe1 Rxe1+ 21.Rxe1 Qd4 22.Qc2

Apr-24-21  cormier: SF Depth 38

+0.78 11....Qb4 12.O-O Rd8 13.Bxc6+ bxc6 14.Re1 Qxc5 15.Qe2 h5 16.Na4 Qd6 17.Rac1 Rc8 18.Nc5 h4 19.f4 hxg3

Apr-24-21  cormier: SF Depth 33

+0.95 11.a3 Qxc5 12.Bg2 Qc4 13.Qe2 O-O-O 14.f4 Nd4 15.Qxc4+ dxc4 16.O-O-O Rhe8 17.Rhe1 a6 18.a4 Nb3+ 19.Kb1

Apr-24-21  cormier: SF Depth 35

+0.89 9....O-O 10.Nd4 Rc8 11.Bg2 b6 12.O-O bxc5 13.Nxc6 Rxc6 14.Nxd5 Nxd5 15.Qxd5 Rc8 16.Qc4 Be6 17.Qc2 h6

Apr-24-21  cormier: SF Depth 34

-0.10 8....c4 9.Bg2 O-O 10.Qd2 Qa5 11.O-O b5 12.a3 Be6 13.Rad1 Qb6 14.Rfe1 h6 15.Ne5 Nxe5 16.dxe5 Rfd8

-0.07 8....O-O 9.Bg2 c4 10.O-O Qa5 11.e3 Rb8 12.a3 Bg4 13.h3 Be6 14.Qe2 Rbd8 15.Rad1 f6 16.Nh4 Bf7

+0.10 8....Qb6 9.Qb3 O-O 10.dxc5 Qxc5 11.Qb5 Qxb5 12.Nxb5 Bg4 13.Bg2 Rac8 14.O-O Rfd8 15.Rac1 d4 16.Rcd1 d3

8...Bg4?

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