Chess Puzzle #39302

CHESS PUZZLE, FEN 1r4k1/p3rppp/6q1/1Np5/2n5/1K4P1/PP3Q1P/2R4R b - -

Added by:	vincerino
Added on:	19-May-11
Description:
More solutions:	kingdawar , dekrishn
Difficulty:	chess puzzle 1r4k1/p3rppp/6q1/1Np5/2n5/1K4P1/PP3Q1P/2R4R b - -
Attempts:	54
Solved:	25 (46%)


Black to move, mate in 6

Comments: (2) » Last

From	Comment
dumiac 20-May-11, 08:58 » Report abuse	Fun indeed, thank you! After these moves: 1. ... Qd3+ 2. Ka4 Nxb2+ 3. Qxb2 Re4+ 4. Qd4 Qxb5+ 5. Ka3 Qa6+/Qa5+ 6. Qa4 it is also possible to mate with the rook (Rxa4#).
dumiac 20-May-11, 10:38 » Report abuse	Also, I think moving the knight to d6 in the second move is almost feasible: 1. ... Qd3+ 2. Ka4 Nd6 Now white has a lot of options, but black can force a mate in almost any case. If white tries to capture black's knight, it is mate immediately: 3. Nxd6 Qa6#. White should defend his knight at b5 to avoid the mate 3. ... Qxb5+ 4. Ka3 Qb4#. The only apparent defense options are 3. Qxc5, 3. Rxc5 and 3. Qf1, but to all of these black can respond with 3. ... Re4+ and eventually force a mate. White's only good answer that I could find was 3. b3 (as you may have guessed, I found it after starting to write this message). No matter how hard I tried, I couldn't find a way for black to force mate after that. Please tell me if I'm wrong!

From

Comment

dumiac
20-May-11, 08:58

» Report abuse

Fun indeed, thank you!

After these moves:

1. ... Qd3+
2. Ka4 Nxb2+
3. Qxb2 Re4+
4. Qd4 Qxb5+
5. Ka3 Qa6+/Qa5+
6. Qa4

it is also possible to mate with the rook (Rxa4#).

dumiac
20-May-11, 10:38

» Report abuse

Also, I think moving the knight to d6 in the second move is almost feasible:

1. ... Qd3+
2. Ka4 Nd6

Now white has a lot of options, but black can force a mate in almost any case. If white tries to capture black's knight, it is mate immediately: 3. Nxd6 Qa6#.

White should defend his knight at b5 to avoid the mate 3. ... Qxb5+ 4. Ka3 Qb4#. The only apparent defense options are 3. Qxc5, 3. Rxc5 and 3. Qf1, but to all of these black can respond with 3. ... Re4+ and eventually force a mate.

White's only good answer that I could find was 3. b3 (as you may have guessed, I found it after starting to write this message). No matter how hard I tried, I couldn't find a way for black to force mate after that. Please tell me if I'm wrong!

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