GameKnot: Comments - Chess Tactics #2400

CHESS TACTICS #2400

Problem's rating:	1908
Avg. time to solve:	02:48
Total attempts:	429
Solved percentage:	44.1%

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cadmankev
18-Jul-11, 18:01

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I don't see the threat, why does QxB?

breakerofwind
18-Jul-11, 19:25

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2. Qe2 Qa1 and 3....Bxa3+ wins

cadmankev
18-Jul-11, 20:11

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can't white play b4 somewhere along the line to prevent Bxa3

breakerofwind
18-Jul-11, 21:03

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Yes, but Ba2 seals it, I believe.

cadmankev
19-Jul-11, 01:21

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sorry, still can't see it, 1 Qe3, Bc5,2 Qe2 or Qf3, Qa1, 3 b4,Ba2? does nothing

breakerofwind
19-Jul-11, 05:09

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2. Qf3 Qa1
3. b4 Ba2
4. bxc5 Qxb1#

or

3. b4 Ba2
4. Rd3 Qxb1#

Since the knight is covering the escape square d2, I suppose White could play QxN, RxQ

canigou
21-Jan-12, 03:43

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I was convinced of 1. Qa3 Qa1 and later 2. ... Bxa3+, but that's not possible if 2. Bxe7.

We can't get around that by first putting the bishop somewhere else (1. Qe3 Bc5) because of that pawn (2. Qd3 Qa1 3. b4). Black could than play Ba2, but white has an escape route: 4. c4 Qxb1+ 5. Qxb1 Bxb1 6. Kxb1.

I also don't see why 2. Qxc5. But maybe the exercise is only what is good for black and maybe there isn't a better move then Bc5.

breakerofwind
21-Jan-12, 07:07

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I'm not sure 2. Qd3 is a good alternative, since there is a knight fork with 2...Nf2

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CHESS TACTICS #2400