Chess Puzzle #105012

CHESS PUZZLE, FEN 5K2/2p5/pb1p1N2/1Nk2p2/B2p4/1Qprp3/8/2q5 w - -

Added by:	hdgpille
Added on:	19-Jul-13
Description:
Difficulty:	chess puzzle 5K2/2p5/pb1p1N2/1Nk2p2/B2p4/1Qprp3/8/2q5 w - -
Attempts:	10
Solved:	3 (30%)


White to move, mate in 2

Comments: (1) » Last

From	Comment
capafan 25-Mar-26, 21:23 » Report abuse	3/10 = 33% pretty low success rate In considering any move, whether the piece moved can be captured there is a first level disqualification. When does one move on to the next level? How do you know when to ask, "Sure, both K or P can capture him there, but then I can check with this fourth piece...(?)" At the gate, c6 isn't covered yet by a4B, but if b5N moves anywhere, c6 becomes a "Plugged Hole" against BK's escape, guarded by a4B. Therefore, each possible move of this b5N ought to be second-level qualified... 1. N×d6! (threat = 2. Nb7+)...c×d6 (or 1...K×d6) 2. Nd7# If 1...K×d6, 2. Qd5# If 1...Qh1 (against 2. Nb7+), 2. Qa2# (guards d6N by skewer). Every move you make should be at least second-level qualified. Once you've been acclimated to THAT, you can start to work on third-level, etc. 😳 The 67% failed here perhaps didn't consider the second level, nor had perhaps ever thought about the third level as being something even POSSIBLE to think about. 😵‍💫 Or, maybe they don't like to think that deeply, and prefer superficial thought, at most. 3 stars ⭐ ⭐ ⭐

From

Comment

capafan
25-Mar-26, 21:23

» Report abuse

3/10 = 33% pretty low success rate

In considering any move, whether the piece moved can be captured there is a first level disqualification. When does one move on to the next level? How do you know when to ask, "Sure, both K or P can capture him there, but then I can check with this fourth piece...(?)"

At the gate, c6 isn't covered yet by a4B, but if b5N moves anywhere, c6 becomes a "Plugged Hole" against BK's escape, guarded by a4B. Therefore, each possible move of this b5N ought to be second-level qualified...

1. N×d6! (threat = 2. Nb7+)*...c×d6 (or 1...K×d6)
2. Nd7#
If 1...K×d6, 2. Qd5#

*If 1...Qh1 (against 2. Nb7+), 2. Qa2# (guards d6N by skewer).

Every move you make should be at least second-level qualified. Once you've been acclimated to THAT, you can start to work on third-level, etc. 😳

The 67% failed here perhaps didn't consider the second level, nor had perhaps ever thought about the third level as being something even POSSIBLE to think about. 😵‍💫
Or, maybe they don't like to think that deeply, and prefer superficial thought, at most.

3 stars ⭐ ⭐ ⭐

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