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Dec-19-04
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| maxxowar: can someone explain me why not 13 ...Bxc5 ? |
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Dec-19-04
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| jahhaj: Quite easy I think. As the commentary says  xd5 is the only move. I didn't see it though to the end of course but if I had this position in a game I think I would have found the right continuation.<maxxowar> 13 xc5 just accelerates Black's attack by bringing his bishop to a good square, for instance after 13 xc5 xc5 14  b5 hxg4 how is White going to defend? |
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Dec-19-04
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| who: <maxxowar> i don't think the rook can get away if rook moves then 14. Bb6 either white wins the rook or starts a killer attack on the king. |
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| Dec-19-04 |
| maheshml: if 13B*C5 B*C5 14 Nb5 qF6 15 Qd2Nf3+ fork white advantage |
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| Dec-19-04 |
| notsodeepthought: Thanks, <crafty>, I missed 20 Re3. |
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| Dec-19-04 |
| filipecea: What happens if 20...bxc6? Perhaps 21.Qa5+ Kd7 22.Qxc5, now the pin on f2 is eliminated.. Or there is something else that I couldn't see? |
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| Dec-19-04 |
| Nickisimo: Clearly the theme of the kibitzing today should be notational madness. Colons, stars and grouping moves together without spaces...for shame, for shame. |
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Dec-19-04
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| jahhaj: <filipecea> Right, White is an exchange and a pawn up with Black's  still exposed. |
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Dec-19-04
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| kevin86: The important part of white winning is to first not lose. Black's attack is strong;the important item was to hold off black's attack-and to win by the material advantage of black's sacrifices. |
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Dec-19-04
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| Sneaky: 19...Kf6 20.Re3!! hilarious! crafty, don't let anybody ever tell you that you're "weak." |
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Dec-19-04
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| aragorn69: The whole point is to end the deadly pin on the a7-g1 diagonal. Hence 20.Nc6+!! that either allows White to block on d4 as in the game or wins the all-important bishop after 20.-bxc6 (deviation of the b-pawn) 21.Qa5+ and 22.Qxc5. To me this Nc6 manoeuver is the most difficult to see... |
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| Dec-19-04 |
| Andrew Chapman: It's possibly worth mentioning that the main point of 18.Bxd5 is that after Qxg3+ white has Bg2 and his position holds. |
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Dec-19-04
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| patzer2: As <Sneaky> and the game commentary indicate, 18...Bxd5!! initiates a subtle but forced "defensive combination." White is up decisive material, but is forced to give back a Bishop to parry Black's flawed but dangerous combination. 18. xd5!!
[18. Be2?? Qxg3+ 19. Kh1 Be4+ 20. Qxe4 (20. f3 Qxh3#; 20. Bf3 Bxf3#) 20...Qxh3+ 21. Kg1 dxe4  ] [18. Kh2?? loses as in the game commentary, but I've expanded it a bit here. 18.Kh2?? Nxg4+ 19. hxg4 h5! 20. g5 h4 21. Nf5+ Bxf5 22. Bxd5 (22. Rae1?? Bd6+ 23. Re5 Bxe5+ 24. Kg1 Qg4+ 25. Kh1 Qh3+ 26. Kg1 Qh2#) 22...exd5 23. Rae1+ Be4 24. Rxe4+ dxe4 25. Qd1 Bd6+ 26. Kg1 Qh3 27. f4 Bc5+ 28. Rf2 Qg3+ 29. Kh1 Bxf2 30. Qf1 h3 31. f5 Qf3+ 32. Kh2 (32. Qg2 hxg2#) 32...Bg3+ 32. Kg1 h2#] 18. xd5!!  xd5
[18...exd5 19. Rae1+ Kd8 (19...Kf6 20. Re3! Bxe3 21. fxe3 Qxf1+ 22. Kxf1 ; 19...Kd6 20. Nb5+! Kd7 21. Nd4+ ; 19...Kf8 20. Re8#) 20. Nc6+! Kc7 (20...bxc6 21. Qa5+ Kc8 22. Qxc5) 21. Nd4 is the game finish] 18. xd5!! xd5 19.  ad1 f3 20. d7+!
[20. Nb5?? Qxg3+ 21. Kh1 Qxh3+ 22. Kg1 Qg3+ 23. Kh1 Qf3+ 24. Kg1 (24. Kh2 Nxg4+ 25. Kg1 Qg3+ 26. Kh1 Qh2#) 24...Be4 25. Rd7+ Kf6 26. g5+ Kxg5 ] [20. Kh2!? is favored by my computer program (Fritz 8), but appears to give Black drawing chances with 20...Bd3! (other replies to 20. Kh2!? give White an easy win): 20...Ra8?? 21. Nc6+ ; 20...Bd6?? 21. Rxd6!! Nxg4+ 22. hxg4 Kxd6 23. Nb5+ 20...Bxa7?? 21. Rd7+ Kf6 (21...Kf8 22. Qa3+ Bc5 24. Qa8#; 21...Ke8 22. Rxb7+ Kf8 23. Qb4+ Bc5 24. Qxc5+ Ke8 25. Qc8#) 22. Qxa7 ; 20...Nxg4?? hxg4! h5 22. g5 Bd6 23. Rxd6 Kxd6 24. Nb5+ ; 20...f5?? 21. Rd7+ Kf6 22. gxf5 Bxf5 23. Qh4+ Kg6 24. Nxf5 Kxf5 (24...Nxf5 25. Rg1+ ) 25. Nb5 e5 26. b4 Bf8 27. Qxh6! gxh6 28. Rf7+ Ke4 29. Re1+ Kd5 30. Rxf3 After 20 Kh2!? Bd3! 21. g5 Ng4+ 22. hxg4 h5 23. Nc8+!! (23. gxh5?? Rxh5+! 24. Nxh5 Qxh5+ 26. Kh1 Qh5+ 27. Kg1 Qg5+ 28. Kh2 Qh5+ = is a draw by perpetual) 23...Rxc8 (23...Kd8? 24. Rxd3+! Qxd3 25. Rd1 ; 23...Kf8 24. Nxh5! g6 25. Rxd3 Qxd3 26. Rd1 Rxh5+ 27. gxh5 Qf3 28. Rf1 Qxh5+ 29. Kg3 Qxg5+ 30. Qg4 Qd8 31. b4! ) 24. Rxd3 Qxd3 25. Rd1 b5! 26. Rxd3 bxa4 27. gxh5 Bxf2 28. Ne4 Ba7 29. Rh3 Rb8 30. b4 axb4 31. axb3 Rxb3  , Black has counterplay and good drawing chances in the endgame.] |
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Dec-19-04
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| patzer2: 18. xd5!! xd5 19. ad1 f3 20. d7+ f6 21. h2 a8 22. b5 b6 [22...Bxa7?? 23. g5#] 23. b4! xa7 24. bxc5 [24. Rxa7? Bd3! 25. Qxd3 Qxd3 26. bxc5 bxc5 lets Black back in the game with near equal chances] 24...xa2 25. g1 and White has a clear and decisive advantage. |
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| Dec-19-04 |
| tuffy13: If after white's 18. Bxd5, black moves Qxg3+. How does white avoid getting mated? |
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Dec-19-04
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| keypusher: <tuffy>, as Andrew Chapman pointed out, 18 Bxd5 Qxg3+ 19 Bg2 |
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| Dec-19-04 |
| tuffy13: <keypusher><patzer2> Thanks! I couldn't convince myself that 19. Bg2 was going to save him, but I'm not a deep thinker. |
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Dec-19-04
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| midknightblue: I didnt solve today's puzzle. I am such a patzer! I am just proud that i got the first 3 moves right (18. Bxd5 exd5, 19. Ra to e1, Kd8. Then I thought 20. Nc6 looked best, but I had no idea where to go from there. Also I wasnt really sure why 18. Bxd5 was best, it just seemed that nothing else was better. Thanks for the explanations above. It makes sense to me now. It is unusual to see a problem like this on the daily chess problem, but it does resemble real game type situations, which is great. |
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| Dec-19-04 |
| erikcu: I'd probably screw up the game given the position at 21. |
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| Dec-19-04 |
| shortsight: <crafty> i thought if 19... Kf6 20. Re3 Bxe3 21. fxe3 Qxf1+? why not 21. ... Qxg3+. is it perpetual draw? or did i miss something here? |
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Dec-19-04
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| talchess2003: hmmm, i think i got it it but i did something a little different at the end...
so i basically did it backwards, starting off the same way with 20. Bxd5 exd5 21. Rae1+ ... i looked at other possibilities like 21... Kd6 but then Nb5+! wins as black has to put his king on either c6 or d7, both exposing the king to the discovered check of Nd4+ winning the queen. also after 21... Kf6 white can win with 22. Re3 so i got to 18. Bxd5 exd5 19. Rae1+ Kd8 but then i complicated things unnecessarily with 20 Qa5+ b6 21. Nc6+ Kc7 22. Nd4 and after 22... Bxd4 23. Qa7+ followed by 24. cxd4. I think this also does the job, but im a little ashamed of myself that i missed the basic Nc6+ bxc6 Qa5+ at that point, i got stuck on all the Qa8+ checks, but oh well, putting a queen en prix makes it look even prettier hehe i also almost gave up on this one, and i think the reason why i got this is because i look at tactics books a lot and from experience in solving sacrificial variations i was able to quickly recognize that Bxd5 was the only line from the start without even calculating anything. this gave me a big advantage because i knew then that it was just up to calculation, so i went into the excruciating work of doing that job. i got stuck for a long time on move 20 (for like 15 minutes lol =( ), it took me awhile to see how the idea of Nd4 solved all of whites problems, but after some trial and error calculation i stumbled upon that move and realized it held up the fort. some advice i would give to people less experienced in solving these kind of problems is to keep calculating and not to give up if the job of calculating out all the variations presents you with a grim future. It took me around 20 minutes to calculate all the lines to the end and check things over (including all of the other black king's moves) which is a long time if you consider that i looked at Bxd5 right away. |
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Dec-19-04
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| talchess2003: <shortsight> because of the pin on the queen, look at the f-file after fxe3 |
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| Dec-19-04 |
| Helloween: <shortsight-why not 21. ... Qxg3+.> The Queen is pinned to the King on f6 in that line, which is the strength of the move Re3. |
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| Dec-19-04 |
| shortsight: i was initially wondering about what pin?!! oh, it was the f1 rook pinning the black Q. thx for telling, i was still thinking of the black K at d8. thx talches2003 and helloween! |
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| Apr-12-09 |
| WhiteRook48: 18 Bxd5 is forced |
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