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Later Kibitzing> |
| Mar-21-16 | | starry2013: I thought it was a simple knight and bishop combo, but then a minute or two later I realised the bishop was in the way. Soon after I realised get rid of the problem bishop and the combo was back on. |
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| Mar-21-16 | | starry2013: thegoodanarchist: <However, the "easy" part is looking for a queen sac, since long-time cg.com users are trained to look for those on Mondays :) > The queen sac is normally much nearer the king. |
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| Mar-21-16 | | YetAnotherAmateur: 8. Qxd4 is the obvious start, because that bishop is all that prevents the game line. Black's response, though, is obviously wrong (poor NN can never catch a break, can he?), for reasons best demonstrated in the game line. Defensive moves like Rg8 and f6 are considerably less bad by comparison. |
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| Mar-21-16 | | Alex56171: To <YetAnotherAmateur> Analysis by Stockfish 090116 64 BMI2 (Depth=38):
1.  (4.93): 8...f6 9.Nxf6+ Kf7 10.Qf4 h6 11.Ng4+ Kg8 12.Nxh6+ Rxh6 13.Bxh6 Nf5 14.Bg5 Qf8 15.g4 Qb4+ 16.Qd2 Qxd2+ 17.Bxd2 Nfe7 18.f3 d6 19.h4 Be6 20.Rc1 Rf8 21.b3 Bd7 22.h5 b6 23.Bc3 gxh5 24.Rxh5 Ng6 25.Rd1 Kf7 26.Rh7+ Ke8 27.Kf2 Kd8 28.g5 Nce5 29.Kg3 a5 30.Bh3 Bxh3 31.Rxh3 Kd7 32.Rh7+ Kc6 33.Bxe5 Nxe5 2. (#9): 8...Ng8 9.Qxh8 d6 10.Qxg8+ Kd7 11.Bxd8 Ne5 12.Bf6 Nxc4 13.Qd8+ Kc6 14.e4 Kb5 15.Qxc7 Bf5 16.Qxc4+ Ka5 17.Bc3# 3. (#5): 8...Rg8 9.Nf6+ Kf8 10.Bh6+ Rg7 11.Nxh7+ Ke8 12.Qxg7 Nb4 13.Nf6# 4. (#5): 8...0-0 9.Nf6+ Kh8 10.Ng4+ f6 11.Bxf6+ Rxf6 12.Qxf6+ Kg8 13.Nh6# 5. (#4): 8...f5 9.Qxh8+ Kf7 10.Qf6+ Ke8 11.Qg7 Nxd5 12.Qg8# 6. (#2): 8...a6 9.Qxh8+ Ng8 10.Qxg8#
7. (#2): 8...b6 9.Qxh8+ Ng8 10.Qxg8#
8. (#2): 8...d6 9.Nf6+ Kf8 10.Bh6#
9. (#2): 8...h6 9.Qxh8+ Ng8 10.Qxg8#
10. (#2): 8...a5 9.Qxh8+ Ng8 10.Qxg8# |
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| Mar-21-16 | | 1.e4effort: Is there a name for this mating trap? |
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| Mar-21-16 | | patzer2: Can't remember the last time if ever that I missed a Monday puzzle, but I managed it today with 8. Nxe7?? which turns the tables and lets Black win after 8...Bc5! 9. Nxc6 Qxg5 10. Qf6 11. bxc5? (better is 11. e3 dxc6 12. bxc5 Qc3+ 13. Ke2 Qxc4+ 14. Ke1 Qc3+ 15. Ke2 Qxc5  (-2.28 @ 20 depth, Deep Fritz 15) 11...Qc3+ 12. Qd2 Qxa1+ (-6.26 @ 24 depth, Deep Fritz 15).If it had a been a Tuesday or a Wednesday, I might have looked a bit deeper and seen the decisive mate-in-three threat with 8. Qxd4! Nxd4? [relatively better is 8...f6 9. Nxf6 Kf7 10. Qf4 (+4.54 @ 34 depth, Stockfish 7)] 9. Nf6+ Kf8 10. Bh6#. Black's decisive mistake was the greedy 7...Bxd4??, allowing 8. Qxd4! . Instead, 7...f6 8.Bxf6 Bxf6  (+1.26 @ 29 depth) keeps Black's survival chances alive. Earlier, instead of 6...Nge7? allowing 7. Nxd4 (+1.20 @ 23 depth, Deep Fritz 15), Black could have kept it level with 6...Nce7 = (-0.24 @ 21 depth, Deep Fritz 15). |
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| Mar-21-16 | | kevin86: White takes out the bishop...and mates in two with bishop and knight. |
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| Mar-21-16 | | King.Arthur.Brazil: Monday puzz make us happy... lgs. Everybody wins. 8.Qxd4 Nxd4 9.Nf6+ and 10.Bh6#. |
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| Mar-21-16 | | patzer2: <raviarum><once> Since it's a Monday, and I'm still trying to use the Monday and Tuesday puzzles to teach my young grandsons, please allow me to expand on your (i.e. <once>'s) Fritz analysis of 8...0-0 (diagram below) a bit:
click for larger viewHere (diagram above) White wins by ignoring the immediate threat to the Queen and playing 9. Nf6+! (diagram below). 
click for larger viewFrom here (diagram above), if 9...Kg7? it's mate-in-two after the double check 10. Ne8+ followed by 10...Kg8 11. Qg7#. So Black's best (diagram above) is 9...Kh8 when it's mate-in-four after 10. Ng4+ f6 (10... Nxd4 11. Bf6+ Kg8 12. Nh6#) 11. Bxf6+ Rxf6 12. Qxf6+ Kg8 13. Nh6#. P.S.: Chess study and analysis seems to be helping all five of my grandchildren with their School work, in which they are all excelling. I'm particularly happy with the fact that one of my older grandsons, diagnosed with ADD, is learning to concentrate and focus much better after studying chess problems and playing at a local youth chess club. I've noticed my daughters, who both studied and played chess growing up, are much more analytical than most young adults in the way they approach, analyze and solve day to day problems. Learning to analyze problems and situations, and to consider the consequences of actions they might take in their daily lives has no doubt improved the quality of their own and their families' lives. |
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| Mar-21-16 | | Marmot PFL: <6...Nce7 is the only move for black.> That's whatI thought as the other knight defends f6 and now c6 is playable. |
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| Mar-21-16 | | eblunt: Is black any better playing 7 ... ♘xd4 ? Stops 8.♕xd4 and he's a piece up for the time being |
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| Mar-21-16 | | JohnDMaster: This happened in a recent blitz game between to very strong grand masters, I cannot remember the names at the moment but black tried 0-0 and lost accordingly. |
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| Mar-21-16 | | Tomlinsky: <JohnDMaster> I'm guessing that you mean when Andreikin beat Karjakin in 10 moves... D Andreikin vs Karjakin, 2010 |
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| Mar-21-16 | | Olsonist: Did I say I hate Mondays?
I love Mondays. |
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| Mar-21-16 | | RoyalPawn: <Parzer2> Great analysis once more and trully amazed of the positive impact of chess in your family. I can't talk for anyone else but chess in a sense saved my life once, focusing in something as rewarding and painful like chess sometimes is all you need to help life to be focused in the right direction. In case anyone wonders, rewarding with each victory , painfully with each defeat but even with each defeat you learn a bit more and make you better prepared for your next battle. Exactly as in life. |
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| Mar-21-16 | | whiteshark: Vienna coffeehouse chess |
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| Mar-21-16 | | pth: NN is surely a remarkable player, both because of his (or her) longevity (several centuries) and because of the extremely poor score (less than 5%). Both seem to be records. |
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Mar-21-16
 | | al wazir: But if black captures first with the ♘, white has no quick win: 7...Nxd4 8. Qxd4 Bxd4 9. Bxe7 Qxe7 10. Nxe7 Kxe7 leaves black a piece up. If instead 8. Nxe7, then after 8...Bxf6 (or simply 8...Kf8) 10. Bxf6 O-O 11. Qxd4, there is a lot of play in the position. |
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| Mar-21-16 | | JohnDMaster: You got it Tomlinsky! |
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Mar-21-16
 | | steinitzfan: This would be a Monday puzzle if we started at White's 9th move. As it is -- we can get some pretty intricate play. |
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| Mar-21-16 | | Longview: <Patzer2> Your comments and analysis of the educational and behavioral aspects of chess are on the mark. I am an ADHD survivor as it were and chess helped me learn more about study, repetition and analysis than I can say. Better though is the story the first club to which I belonged. In Vermont during the 1975-78 period I was a member of a local club composed of youngsters ranging in age from 5-11. The founder of the school club was an English/History teacher in the school who suggested to his rowdy study hall boys that if they would work on their homework for 45 minutes of the hour, he would let them play a game for the last 15 minutes. They did not know he meant chess. He did not know how to play but learned as he taught them. He told me that after several years he had noticed that the boys grades in all areas improved, their reading skills improved as well as math skills. I know the attention span was terrific. I sat across the table of his 7 year old son who played me quietly as he sat on his knees in the folding chair across the table for two hours! If my memory is correct, he won the game, too. This group of middle school kids went on to be National HS champs and went to Russia sometime in the early 80's to represent the US in a tournament there. Some really spectacular players were already in evidence while I was with them. I have not been quite as successful with my four grandchildren as you but I do have two that seem to be persisting in their early efforts. I have enjoyed my time with them and now am leading a small school club of K-6 graders as they learn and play.
I join you in encouraging others to do as you have. Kudos. |
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| Mar-22-16 | | patzer2: <RoyalPawn><Longview> Enjoyed your comments on the life application benefits of chess study. Will definitely share them with my two daughters and their families. |
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| Mar-23-16 | | notyetagm: Muller vs NN, 1928 8 ?
click for larger view8 ♕d1x♗d4! <remove guard: f6-sq>
click for larger view8 ... ♘c6x♕d4 9 ♘d5-f6+ ♔e8-f8 10 ♗g5-h6#
click for larger view |
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| Mar-23-16 | | notyetagm: Muller vs NN, 1928 Game Collection: THE UNDERRATED REMOVAL OF THE GUARD -- HEISMAN 8 Qd1xBd4! destroys d4-bishop defender of f6-sq for fatal check |
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| Mar-23-16 | | notyetagm: Muller vs NN, 1928 Game Collection: ILLUSORY PROTECTION 8 Qd1xBd4! Nc6xQd4 d4-knight cannot protect f6 like d4-bishop |
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Later Kibitzing> |
Kibitzing
sac: 8.Qxd4