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Mar-23-11
 | | scormus: <acme> a nice analysis of the continutation after B's best shot 31 ... Bb7. I didnt find 32 Nd2! when I "solved" the puzzled this morning. Instead I thought W should be able to give up an N to get at least a pawn (passed) plus control with the remaining N. But your manouver is the most positive way to close out. Surprising B didnt try to fight on, nespar? |
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Mar-23-11
 | | YouRang: I thought it was a little Tuesdayish for a Wednesday, but that's being nitpickish. One reason it seemed easy is because one can find it pretty quickly just by examining the forcing moves. Perhaps it was also made easier because we've had a few Monday puzzles lately where the solution involved sacrificiing a queen for a lesser piece merely to get it back with a knight fork. Today was only slightly more complicated in that we had to first make a safe square for the knight with a rook exchange following 28.Re8+! |
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Mar-23-11
 | | kevin86: I remember a game a while ago with this idea: White sacs the queen at g7,captures a piece at e8,then captures the queen.This one is almost as brilliant. |
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Mar-23-11
 | | al wazir: <acme: 31. ...Bb7 32. Nd2> f5. Now what? |
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| Mar-23-11 | | psmith: <al wazir>:
31...Bb7 32. Nd2 f5 33. Ne6+... (I assume Black K is on f8. If Black K is on f6, no f5 is possible.) |
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| Mar-23-11 | | VincentL: "Medium/Easy"
Surely this is 28. Qxd8+ Qxd8 29. Re8+ followed by Rxd8 Letīs check. |
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| Mar-23-11 | | MaxxLange: The Black K would not have been able to go to f6 after 30 Nxe8+, anyway. |
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| Mar-23-11 | | VincentL: Huh. No !
29...Qxe8 in my line.... and after 30... Bxb2 black probably wins. I think I looked at the puzzle and wrote up my post in about 30 seconds flat. Must be more careful. |
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Mar-23-11
| | al wazir: <psmith: 31...Bb7 32. Nd2 f5 33. Ne6+.> Of course. I was giving black an extra move. Thanks. |
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| Mar-23-11 | | CHESSTTCAMPS: Material is even, but white's strongly posted knight on d6 and control of the open e-file trump black's bishop pair. Experienced tacticians will quickly recognize a disguised royal fork, which white can implement with: 28.Re8+! Rxe8 (otherwise 29.Qxd8) 29.Qxg7+ Kxg7 30.Nxe8+ Kf8 31.Nxc7 Bb7 (otherwise, white rescues the trapped knight with 32.Na8-b6) 32.Ne5 and now black must lose key pawns to get the piece back: A) 32... Ke7 33.f4! f6 (Kd8 34.Nxa6 Bxa6 35.Nxf7+ gets 3 pawns for the knight) 37.Nxg6+ Kd7 38.Nxa6 Bxa6 39.f5 and the BK is denied access into the white position. B) 32... f6? 33.Nxg6+ Kf7 34.f5 saves both knights.
C) 32... a5 33.Kf2 and the WK will protect the queenside pawns, while the Ne5 cleans up the Kingside pawns if the BK goes after the Nc7. I did not see this combination right away, looking first at 28.Ne8, 28.Qxd8+?, and 28.Re7 Bxf6 29.Rxf7 before the combination clicked. Most likely, you would have to play the first move of the combo within 10 seconds or so on Chess Tactics Server to gain points in this position. While I think that CTS has value in exposing a player to a lot of tactics in a short amount of time, I feel there is greater value working through a combination in detail, rather than blitz mode. As for the tactics of the trapped knight, I take the view here that white would not need to visualize to great depth after move 31 from the puzzle position to initiate the combination. (In any case, White should reassess the position at move 31 to get a good understanding of the endgame.) However, I think it is good practice to try it from the puzzle position, assuming there is plenty of time on the clock. |
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| Mar-23-11 | | Penguincw: Nice puzzle.I didn't even see that the queen was hit though. |
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| Mar-23-11 | | CHESSTTCAMPS: I missed the nice continuation of MaxxLange to save the trapped knight in the cleanest way. |
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Mar-23-11
 | | Patriot: I calculated the main line of this and thought the knight on c7 might become trapped after 29...Kxg7 30.Nxe8+ Kf8 31.Nxc7 Bb7. But really it's a non-issue because even if black attacked the knight it can always become a desperado and take on a6, leaving white technically ahead. It's a waste of time calculating that out unless there's another move that compares to 28.Re8+. I don't think black should've resigned at that point unless I'm just missing something. |
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| Mar-23-11 | | MaxxLange: <CHESSTTCAMPS>
It was <acme> who saw that line...I did not look farther than "OOOH I WIN A PIECE" |
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Mar-23-11
| | Patriot: Nice job to <acme> and anyone else who saw 32.Nd2!! It's a beautiful and brilliant move! |
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| Mar-23-11 | | alachabre: I get no respect. No respect at all. |
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| Mar-23-11 | | zealouspawn: This tactic reminds me of checkers... its kind of funny. After setting up the tactic, the knight gets to double-jump to grab the enemy rook and queen. |
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| Mar-23-11 | | mworld: Very happy to have seen this one for all the right reasons. Although, I did feel that since it was a puzzle that there was probably something better out there and spent quite a bit of time trying to get some other moves to do 'something' like rd7. |
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| Mar-23-11 | | wals: Rybka 4 x 64: d 19 :
Black's first blunder
25...Bf8, +1.16. Best,
1.  (0.26): 25...d3 26.Qxd3 Bc8 27.Ne5 Bf8 28.Qc3 Bxd6 29.cxd6 Rxd6 30.Ng4 Be6 31.Nf6+ Kf8 32.Ne4 Rd5 33.Qh8+ Ke7 34.Qxh6 Re5 35.f3 Bxb3 36.Ra1 Bd5 37.Qh4+ g5 38.Nxg5 f6 39.Ne4 Bxe4 Black's second blunder
26...Bc8, +3.16. Best, Bg7, +1.23.
after 29.Qxg7+, the game could have continued,
Analysis by Rybka 4 x64: d 25 : 5 min :
1.  (3.98): 29...Kxg7 30.Nxe8+[] Kf8 31.Nxc7[] Bb7 32.Nd2 Ke7 33.Ne4 Kd8 34.Ne8 Bc8 35.N4d6 Be6 36.b4 h5 37.Kf1 h4 38.Ke2 Bd5 39.f3 Bb3 40.Ke3 Bd1 41.Kd3 Kd7 42.Kd2 Bb3 43.Ke3 Bd1 44.Kd3 f5 |
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Mar-23-11
 | | DarthStapler: Got it easily |
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Mar-23-11
 | | David2009: The N emerges from c7, but even if it didn't I would probably play the combination. I'm coming to this too to set it up on Crafty EGT as a check. |
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Mar-23-11
 | | thegoodanarchist: Maybe a Tuesday puzzle but certainly not a Thursday puzzle. No matter how many stars, it is certainly a useful combo that every player should know! |
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| Mar-23-11 | | WhiteRook48: i tried a 28 Ne8 puzzle solution instead...
I failed the puzzle again |
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Mar-23-11
 | | patzer2: <acme>'s Continuation after 28. Re8+ Rxe8 29. Qxg7+ Kxg7 30. Nxe8+ Kf8 31. Nxc7 Bb7 32. Nd2! Ke7 33. Ne4 Kd8 (diagram below) 34. Ne8 is a neat active defensive technique, using a tactical threat to defend the "trapped Knight" with another Knight Fork threat.
click for larger viewWhite wins from above analysis with 34. Ne8! , threatening 34...Kxe8 35. Nd6+ Kd7 36. Nxb7 winning a piece. |
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| Mar-23-11 | | SufferingBruin: So I was playing on FICS and I had work on my mind. I'm sure you can guess how that went--blind mistakes, hanging pieces galore... a horror show. I came home, looked at the puzzle and thought Re8 looked good but that Re7 would lead to a queen capture. What's that you say? White's queen is being attacked by a bishop <right next to her>? I'm not ever playing chess after a rough day on the job. |
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sac: 28.Re8+