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| Jul-02-14 | | stacase: I'm always trying for that Bishop sacrifice. It's a killer move when you can pull it off. |
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| Jul-02-14 | | Dr. J: <al wazir: <Dr. J: 17...Nf6 18.exf6 Qc5> 19. Qh7+ Kxf6 20. Ne4+ dxe4 21. Nxe4+.> Indeed. Other Queen moves (to d8, b4, b7, etc., would prevent the fork, but White's attack is still strong. |
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| Jul-02-14 | | morfishine: The strongest move-order appears to be:
First <15.Bxh7+>
15...Kxh7 16.Ng5+ Kg6 and now <17.Qh3> To this, I've been unable to defend as Black
***** |
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| Jul-02-14 | | zb2cr: Classic Bishop sacrifice! 15. Bxh7+, Kxh7; 16. Ng5+, Kg6; 17. Qh3 brings down the curtain. |
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| Jul-02-14 | | CC0112358: <agb2002> nice analysis! There is also a possible black continuation with a Queen sacrifice 16.....Qxg5. Exchanges the Queen for two small pieces. Don't think it is sufficient for black to prevail but it looked like a possible counter. |
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| Jul-02-14 | | Stormbringer: Sometimes I feel like it would be more instructive to study games where the bishop sac on h7 didn't work. |
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| Jul-02-14 | | pedro99: The Kottnauer-Kotov game is one which almost didn't work. I'd like to see an updated annotation of this game with the help of a few super computers. Aggressive lines are easier to play as an attacker. |
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| Jul-02-14 | | beenthere240: CG has posted spoilers in the past where the CBS is a bust. |
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Jul-02-14
 | | Penguincw: 3/3 this week, although I wouldn't have known what to do after 16...Kg6 (nevermind, play 17.Qh3 anyway). |
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| Jul-02-14 | | patzer2: Visualized and picked 15. Bxh7+, Kxh7; 16. Ng5+, Kg6; 17. Qh3 as my choice to solve this Wednesday puzzle. However, I had to click to the final position to see the answer to 17...N(d)xe5(diagram below): 
click for larger viewFrom here, it's mate-in-three after 18. Qh7+ Kf6 19. Nce4+ dxe4 20. Nxe4# P.S.: Enjoyed watching the US Belgium World Cup game in the round of 16. Tim Howard's extraordinary perform with 16 saves in goal made it close and gave the US chances to win at the end (Belgium 2 - US 1). US soccer obviously has a ways to go before the MLS is playing at the level of the Premiere and Spanish league, but this doesn't mean the national team's progress is as far behind as some critics of this team would indicate. For example, the early exit of England and Spain's national teams doesn't mean the level of soccer in those nations is below the rest of the world. Moreover, the tired legs of the US side and the absence of Jozy Altidore may have had as much to do with the lackluster performance (for all but the last 15 minutes of this 121 minute game) of the rest of the team (other than the Goal Keeper), as does the gap in skill level between US and Belgium or German futbol. |
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| Jul-02-14 | | Castleinthesky: As this is "National Sac Week" (regardless of the country you are from), this was an easy puzzle as the only sac was a bishop. The queen's mischief easy followed. |
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| Jul-02-14 | | Mojodomo: I thought Black might be able to escape by exchanging a knight for two pawns with 16. ...Nf6, but White can just barrel on through: 15.Bxh7+ Kh8
16.Ng5 Nf6
17.Qh3 [not exf6 Qxf6 18.Qh3 Qh6 etc]
... g6 [or anything else]
18.Bxg6+ Nh7
19.Qxh7#
Thanks <agb2002> for the detailed analysis. |
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| Jul-02-14 | | engmaged: The famous "Greek gift". But for some reason I worked on 17.Qg3 instead, which is more common thematic ... Qh3 only works here because Black can not play Rh8. |
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| Jul-02-14 | | aditya GM: how about 17...Rh8? |
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| Jul-02-14 | | kevin86: The classic bishop sac wins this one. |
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| Jul-02-14 | | Chess Dad: <aditya GM>
<how about 17...Rh8?> I don't think it's enough.
18. Qxh8 Kf5
19. g3 Ncxe5
20. Qh7+ Kf6
21. Nce4+ dxe4
22. Nxe4#
Or 18. Qxh8 Ncxe5
19. Qh7+ Kf6
20. Nce4+ dxe4
21. Nxe4#
Of course, black can still choose to trade his queen for the Ng5. It might delay things a bit longer, but he's clearly losing at that point. |
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| Jul-02-14 | | sombreronegro: Not hard to see 15 B x h7 and then the knight check with tempo. |
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| Jul-02-14 | | posoo: lol national sac week |
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| Jul-02-14 | | rinkol: It is interesting that black would have been able to contest the h file if he had connected his rooks by playing ... Bb7 instead of ... Rb8. |
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| Jul-02-14 | | eblunt: <rinkol> exactly what I was thinking, I really don't see the point of rb8 anyway. |
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| Jul-02-14 | | Gilmoy: <patzer2: P.S.: Enjoyed watching the US Belgium World Cup game in the round of 16.>
... where Belgium dominated the center and played sac, sac, sac, sac, sac, sac, sac ... and then almost got mated in time scramble. USA's promoted KR looked lively :)
(I very sporadically see chess comments on BigSoccer ... so I reply in FEN.) |
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| Jul-02-14 | | Whitehat1963: Easy (for me) for a Wednesday. |
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| Jul-02-14 | | Reggie T: Another variation: 17...Nf6 18. exf6 Kxf6 18. Nh7+ Kg6 19. g4 with Qh5 mate. |
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| Jul-03-14 | | agb2002: <Mojodomo, CC0112358> Thank you! |
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Jan-16-19
 | | GrahamClayton: Even GMs are not immune to the "Greek Gift" sacrifice. |
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Kibitzing
sac: 15.Bxh7+