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Tomas Nessi vs Lucas Peretti
ARG-chJ U10 1/2 final (2000), Santa Fe, rd 2, Apr-26
Sicilian Defense: Pin. Koch Variation (B40)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-15-06  jedrus07: I wonder if this opening is really correct for white, I mean the rook sacrifice. Can anybody do some professional analyze on this? :)
Feb-04-07  psmith: <jedrus07> Looking this over with Fritz 5.32 it seems that the sacrifice is sound. However, White does not play the best moves all the way through in this game. Here are some notes:

10... Qb1 is forced to prevent Nb3 and Bd3.

Instead of 11. Bd3, White can force a draw with 11. Nb5 Qe4+ 12. Kd1 Qa4+ 13. Ke1 Qe4+. If Black does not take the draw White gets the advantage.

Black's 11th and 12th moves are forced. But 13. Qg5 is better for White than the move played (13. Qh6). 13. Qg5 prevents the defense with 13... Qc5, for example: 13. Qg5 Nc6 14. Nb5 d5 15. Bxh7 Rxg7 16. Qxg7 Qxb5 17. Qg8+ Ke7 18. Ba3+ Kd7 19. Qxf7+ Kd8 20. Bd6 Qa5 21. 0-0 with big plus.

15... Rxg7 is better for Black though White still has a big advantage after 16. f4.

18. Nd6+ is not very strong compared to alternatives, especially 18. Qf6. Aftet 18. Nd6+ Kd8 was a better defense.

But 19. Nxc8+ practically gives Black back the game. Instead 19. Nf5+ was crushing. (19.... Kd8 20. Qf6+ Kc7 21. Bf4+ etc; 19... exf5 20. Re1+ leads to mate.)

21... Qg7 was bad. 21... Qd8 equalizes. But 23. Qg5+ was also weak; 23. Bb4 was much stronger. After 23. Qg5+ Black should have played 23... Kf8 instead of 23... f6. After 23... Kf8 White wouldn't have much, whereas after 23... f6 White is winning. But 24... Ke8 was a better defense than 24... Kd8.

Jul-23-08
Premium Chessgames Member
  An Englishman: Good Evening: I suppose the mistakes were inevitable, given that both players were under 10 years old at the time. The complications hurt my tired old brain.

19.Nf5+ was definitely superior, but after 19...exf5?; 20.Bg5+ is even more decisive than Re1+. Note how the Bishop and Queen take away all of the Black King's dark squares.

Jul-23-08  Dr. J: Not quite: <19 Nf5+ exf5? 20 Re1+ (ps)> mates: ... Kd8 21 Qf6+ Kc7 22 Bf4+ d6 22 Qxd6#, whereas <19 Nf5+ exf5? 20 Bg5+ (AnE)> allows ... Qxg5+ and Black holds out a little longer.
Jul-23-08  Marmot PFL: 17.Qf6 pretty much wins on the spot. Bg5 follows, or if 17...Qg6 18.Qh8+ Ke7 19.Ba3+ d6 20.Nb5 or Rd1. Still what white played isn't bad, especially for a 10 year old! Nunn's assesment is that the whole line starting with 6...Qa5 "practically loses by force".
Dec-22-11
Premium Chessgames Member
  Penguincw: Mate threat on d7. Black can try to block with the queen, move the king or give check, but white still mates.
Jun-21-12
Premium Chessgames Member
  Phony Benoni: An earlier theoretical contribution which is about to be submitted:

[Event "Western Championship (Final)"]
[Site "Chicago, Ill."]
[Date "1934.07.27"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Fine, Reuben"]
[Black "Denker, Arnold"]
[ECO ""]
[WhiteElo ""]
[BlackElo ""]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5 Qa5 7.exf6 Bxc3+ 8.bxc3 Qxc3+ 9.Qd2 Qxa1 10.c3 Qb1 11.Bd3 Qb6 12.fxg7 Rg8 13.Qh6 Nc6 14.Bxh7 Nxd4 15.Bxg8 Nc2+ 16.Kd1 Qxf2 17.Bh7 1-0

Denker tried 13...Nc6 instead of 13...Qc5, but didn't last long. Not surprising that the line seems to have disappeared for six decades.

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