Rich As A King

Friday, February 08, 2013

Brain challenge review


White to move and checkmate in 4. No computer please :)

5B2/5p2/4pP2/3pPB2/2pP4/1pP5/pP6/k1K5 w - - 0 1

24 comments:

Oleg Mezjuev said...

1. Bc2 (zugzwang) bxc2 2. b3 cxb3 3. Ba3 b2+ 4. Bxb2#

James I. Hymas said...

Cute!

1. Bc2 bc
2. b4 cb
3. Ba3 b2+
4. B:b2+

Unknown said...

Nice idea with Bc2! :)

alvaroandresyepess said...

Bisop c2

Anonymous said...

Since the black king is trapped on the A1 square, the solution is to get the black bishop to the b2 square. This is accomplished as follows (all moves are forced):

1. Bc2, bxc2
2. b3, cxb3
3. Ba3, b2+
4. Bxb2 ++

mshroder said...

1. Bc2 bxc2
2. b4 cxb e.p.
3. Ba3 b2+
4. Bxb2#

Mark

Anonymous said...

Solution:

1. Bc2 bxc2
2. b3 cxb3
3. Ba3 b2+
4. Bxb2 mate

Ira said...

1. Bc2....bxc2
2. b3.....cxb3
3. Ba3....b2
4. Bxb2#

Anand Gautam said...

Very nice problem :)
1. Bc2!! bxc2
2. b3 cxb3
3. Ba3 b2+
4. Bxb2 checkmate

Anonymous said...

Bc2 bxc2
b3 cxb3
Ba3 b2+
Bxb2#

Cool looking position, but definitely one of the easier puzzles considering all of black's moves are forced.

Anand Gautam said...

Very nice problem :)
1. Bc2!! bxc2
2. b3 cxb3
3. Ba3 b2+
4. Bxb2 checkmate

wolverine said...

Bc2 bxc2
b3 cxb3
Ba3 b2
Bxb2++

took a couple minutes.. i first wanted to move the the king.. then decided to force the pawns to move with the bishop..

Anonymous said...

1) Bc2, bc
2) b3 , cb
3) Ba3, b4
4) Bb2#

Anonymous said...

The "mate in four" prompt might be too big of a clue here. Let me explain my reasoning...

First, it is rather obvious that white cannot, within four moves, promote a pawn and engineer a checkmate with the newly acquired queen. Which means that mate must be delivered with the material already available.

Next, a cursory look at the position reveals that white must immediately sacrifice his light-square bishop - or else provoke stalemate. This, in turn, signifies that mate will be delivered with the other bishop, most likely on b2.

Once you have come to that conclusion, the full solution should quickly materialize.

All of black's moves are forced...

1- Bc2 ; bxc2
2- b3
(b4 is possible too, if you want to be cute)
2- ... ; cxb3
3- Ba3 ; b2+
4- Bxb2#

Anonymous said...

1. Bc2 bxc2 2. b3 (or b4) cxb3 3. Ba3 b2+ 4. Bxb2#

Anonymous said...

Bc2,bxB - b3,cxb - Ba3,b2 - Bxb2#

Anonymous said...

Tempting to start looking at
taking e6 and moving f7 (like I did)! Nice red herring by composer when the solution is at other end of the pawns diagonal!

1.Bc2! now black has a move.
1....bxc2
2.b3! now black has a move.
2....cxb3
3.Ba3 and black still has a move.
3....b2+ and now the coup de gras
4.Bxb2#

0-0-0
-0-0-

Michel Hoetmer said...

Funny puzzle. I think it is not so difficult to solve this without a computer. Basically you should give black a possibility to make a move. So...? 1. Bc2 bxc2 2. b3 (or4) cxb 3. Ba3 b2+ 4. Bxb2#

Lucymarie said...

1. Bc2 bxc2 2. b4 cxb3 e.p. 3. Ba3 b2+ 4. Bxb2#

Anonymous said...

1. Bf5-c2
forcing 1. ... b3xc2
2. b2-b3
forcing 2. ... c4xb3
3. Bf8-a3
forcing 3. ... b3-b2+
4. Ba3xb2#

--br


Martin Ziserman said...

I did not do the test but I was thinking Bg6 fxg6, f7 g5, Ba3 g4, f8(Q) g3, Qf1 g3, Kd2#

Martin Ziserman said...
This comment has been removed by the author.
Oleg Mezjuev said...

An alternative checkmate (not in 4 moves though) is:

1. Bg6 fxg6 2. Ba3 g5 3. f7 g4 4. f8Q g3 5. Qg8 g2 6. Kd2 Kb1 7. Qg6+ Ka1 8. Ke2 g1Q 9. Qxg1#

Anonymous said...

1.Bc2 bxc2
2.b3 cxb3
3.Ba3 b2+
4.Bxb2#

1-0