GameKnot: Comments - Chess Tactics #111115

CHESS TACTICS #111115

Problem's rating:	1477
Avg. time to solve:	01:13
Total attempts:	170
Solved percentage:	78.2%

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sifujace
09-Nov-12, 22:15

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Can't see why....

Someone able to tell me why White queen takes black rook? I can see White Qf7 eventully leads to mate but why isn't White Qc1 a better option?

sccadams
09-Nov-12, 22:34

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Okay, say the white queen mores to a safe square.

1. Qc4 Rd4
2. Qb5 Qxg4+
3. Kg2 Rd2+

And white cannot avoid checkmate.

sifujace
10-Nov-12, 06:51

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Thanks for replying but....?

4. How about White queen can move to f1 to spoil checkmate?

And QC1 stops it too ( unless I'm not going far enough ahead or i'm missing something)

sccadams
10-Nov-12, 16:29

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Are you why the queen doesn't move to f1 on the second move or the fourth move of the continuation I provided? In the former case:
1. Qc4 Rd4
2. Qf1 Qxf1+
3. Kh4 Rxg4+
4. Kxh5 Qh3+
5. Bh4 Qxh4#

The latter case is impossible, since white is in check after black's move three.

As for 2. Qc1

1. Qc4 Rd4
2. Qc1 Qxg4+
3. Kg2 Qe2+
and either
4. Kg1 Rd1+
5. Qxd1 Qxd1+
and white loses the queen anyway.
or
4. Kh3 Rh4+
5. ... Qg4#

sifujace
11-Nov-12, 03:58

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Thanks for the 2. Qc1 threads - they make sense. How about the following options for black?

1. Qc4 Rd4
2. Qb5 Qxg4+
3. Kg2 Rd2+
4. Kg1 Qd1+
5. Qf1 .......

or

4. Kg1 Rd1+
5. Kg2 Qe4+ or 5. Kg2
6. Kh3 ......

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CHESS TACTICS #111115