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| Mar-06-06 | | dakgootje: Nice and easy puzzle, though my first split-second-reaction-move for saccing the queen wasnt right as i first wanted to sac it at b2, and thus this monday puzzle took me an immense 3 seconds to solve ;-) |
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| Mar-06-06 | | Alterno: At last: a puzzle I could resolve without doubting the reason why it was the right move |
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| Mar-06-06 | | RandomVisitor: <patzer2>with regard to the second puzzle, building on Fezzik's analysis, 30...h6 is best as black does not fear gxh6 Qd4 Kc1 gxh6 Qb8+ Kg7 Qg3+ Kf6 |
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Mar-06-06
 | | patzer2: <Ramdomvisitor> Good analysis of one of Black's best winning lines after 28...Rd1+ 29.Rd1 30.Bd1 h6! However might <Fezzik>'s line with 30...g6! be just as good? It appears to offer Black most of the same winning positional advantages with few complications. As such, I wonder if it might be a move more likely to be played OTB by an expert or master. |
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Mar-06-06
 | | kevin86: White avoided the obvious 28 ♖xe5 ♖xd1# and tried to get his rook out of Dodge,but the queen sac thinned out and exposed white's first row defenses. A back row mate with a twist. |
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| Mar-06-06 | | YouRang: Now THAT'S a Monday puzzle. Basic back-rank attack. |
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| Mar-06-06 | | RandomVisitor: <patzer2>the problem with ...g6 is that White can play Qxa5 and now threatens Qd8+ Kg7 Qf6+ perpetual check, something that he cannot do with ...h6. For example, 30...g6 31.Qxa5 Qd5 32.Bf3! if Qxf3 Qd8+ perpetual check. In your first puzzle, Qe3 or Qf4 and it is mate in 3 |
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Mar-06-06
| | patzer2: <Fezzek> <RandomVisitor> There appears to be a problem with the notation on the solution to my puzzle 2. My intended solution after 28. Bf3 was 28...Rxd1+ 29. Rxd1 Rxd1+ 30. Bxd1 h6!  (<Fezzek>'s 30... g6! also seems to work). <Random Visitor> Sorry for the confusion. You might wish to take another look at <Fezzek's> 30...g6! in light of this correction as now 30...g6 31. Qxa5 Qd5 32. Bf3?? is met with 32...Qg8+ 33. Bd1 Qxd1#. Fritz 8 indicates Black obtains a winning position after <28. Bf3 Rxd1+ 29. Rxd1 Rxd1+ 30. Bxd1 g6!> 31. Qxa5 Qd4! 32. Qa8+ (32. Bf3?? Qg1+  ) 32... Kg7 33. Qf3 Qxh4 34. Qe3 Ne6 35. c3 Qxg5 36. Qxg5 Nxg5 37. cxb4 h5 38. b5 h4 39. b6 h3 40. b7 h2 41. b8=Q h1=Q 42. Qe5+ f6 43. Qe7+ Nf7 44. Kc1 f4 45. Qa7 g5 46. Kd2 Qg2+ 47. Kc1 Qc6+ 48. Kd2 Kg6 49. Bc2+ f5 50. Bd3 Nd6 51. b4 Ne4+ 52. Kd1 f3 53. Qd4 Qa4+ 54. Kc1 Qa3+ 55. Kb1 Nd2+ 56. Kc2 Qxa2+ 57. Kd1 Ne4 58. Bxe4 Qe2+ 59. Kc1 fxe4 60. Qd6+ Kh5 61. Qd1 e3 62. b5 Qc4+ 63. Kb2 Qxb5+ 64. Ka3 e2 65. Qh1+ Kg6 66. Qe1 Qd3+ 67. Ka2 Qd1 68. Qf2 e1=Q . P.S. This was based on a move-by-move look at the position on infinite analysis with Fritz 8 @ 15 depth per move. |
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Mar-06-06
 | | thegoodanarchist: Why don't 2200-rated players make blunders like that for me??? |
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| Mar-06-06 | | McCool: Fastest solved puzzle ever. Half a second. |
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| Mar-06-06 | | RandomVisitor: <patzer2>well the Qd4 line is playable for Black, so let's look at it... 32.Qa8+ Kg7 33.Qh1 seems best, protecting the pawn on h4. Black has Ne4 then white has Qe1.
click for larger viewBlack still has an advantage. Rybka scores the diagrammed position as -1.26/18. Maybe next is h6, and Black will probably win. In the h6 line I looked at earlier
click for larger view
Rybka scored it as -1.62/16. So that's why I picked it over the g6 line. |
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| Mar-06-06 | | Knight13: "Bobby Fischer Teaches Chess" |
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| Mar-06-06 | | Warrush: This literally only took me 2 secs |
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| Mar-06-06 | | blingice: OMG, I SWEAR, THIS TOOK ME A BAJILLIONTH OF A SECOND. NO, I KNEW IT BEFORE I EVEN LOOKED AT IT, I SWEAR, OMG, I AM GREAT. (satire for those who understand the joke, and for those who don't...) |
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Mar-06-06
| | OBIT: Geez, have mercy, chessgames - this position is much too difficult for a Monday! I might suggest you use the following position for NEXT Monday's puzzle: Mickey vs Goofy, White to play:
click for larger view48. ? |
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| Mar-06-06 | | norami: You can't not solve that no matter how hard you don't try. |
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| Mar-06-06 | | MorphyMatt: <norami> Yeah, good one. If you really want a challenge try this puzzle of mine:
click for larger view
White to move and mate in 14. |
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| Mar-06-06 | | blingice: Oooh, sorry, <MorphyMatt>, Chessmaster sees a mate in only six moves: 1.Ne7+ Kh8 2.Nxf7+ Rxf7 3.Rc8+ Bd8 4.Rxd8+ Ne8 5.Rxe8+ Rf8 6.Rxf8# Now what was the mate in 14 you had planned?
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Mar-06-06
| | patzer2: <RandomVisitor> Thanks for providing winning solutions to both puzzles. Fritz 8 initially scored the 30...g6 line lower, but as I played it out on infinite analysis the advantage steadily grew to a clearly decisive result. IMO, after <28. Bf3 Rxd1+ 29. Rxd1 Rxd1+ 30. Bxd1>, both your 30...h6! and <Fezzek>'s 30...g6! are winning choices. |
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Mar-06-06
| | patzer2: <RandomVisitor> After Black plays 34...f6! in the first puzzle of your last post (diagram for 30...g6 line), Fritz 8 gives it a -1.75 evaluation @ 15 depth. Of course the difference in evaluation might reflect the fact that Rybka is apparently stronger than Fritz 8.
The articles at http://www.chessolympiad-torino2006... and http://computerchess.org.uk/ccrl/40... have certainly caught my attention. Could this Rybka really have a 2919 ELO? Wow! |
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| Mar-06-06 | | LivBlockade: <patzer2> and <RandomVisitor> - after 28.♗f3, what happens if Black plays 28...♕e3 (instead of ♖xd1)? How does White continue? Thanks. |
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| Mar-07-06 | | Fezzik: @Patzer2
I chose 30...g6 because I didn't see any way for White to exploit the potential perpetual check and if that was the case, I'd rather defend the passed f5. I didn't quite believe I'd solved the puzzle because there were no spectacular moves. But that's how chess games often go. I love the discussion you generated with those positions! Thanks for adding those extra two puzzles! I stole the idea of building on a position from John Littlewood's "Chess Coaching", and I will certainly store this trio into my coach's file too. |
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| Mar-07-06 | | MorphyMatt: <blingice> I was thinking 1. ♘e7+ ♔h8 2. ♕xh7+ ♘xh7 3. ♘xf7+ ♖xf7 4. ♘g6+ ♔g8 5. ♖e8+ ♘f8 6. ♖xf8+ ♖xf8 7. ♗e6+ ♔h7 8. ♘xf8+ ♔h8 9. ♘g6+ ♔h7 10. ♗g8+ ♔xg8 11. ♖c8+ ♗d8 12. ♖xd8+ ♔f7 13. ♖f8#, but that's 13 moves. |
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Mar-07-06
| | patzer2: <LivBlockade> After 28. Bf3 Qe3!?, White has the defense 29. Qxa5 =. Per Fritz 8, play might continue 29. Qxa5 Rxd1+ 30. Rxd1 Rxd1+ 31. Bxd1 g6 32. Qxb4 = (0.00 @ 14 depth). |
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Mar-07-06
| | patzer2: <Fezzik> Thanks for the explanation on 30...g6! I've noticed a lot of masters will sometimes take a slightly smaller advantage and squeeze it for a bigger advantage, as opposed to going for a more difficult but seemingly stronger tactic. However, maybe that's just a difference in winning styles (e.g. Karpov versus Kasparov). |
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