Thursday, July 19, 2007

#2 John Nunn's Favourite Chess Puzzles


Ok, the first one was really too easy, so I post the second which is both more difficult and more instructive. I think resolving a problem is very useful to gain confidence, develop calculation ability and tactical intuition. So, why not to try? If you cannot find it, I'll give you a hint in a couple of days.
WHITE TO PLAY AND MATE IN TWO.

19 comments:

Unknown said...

good puzzle, took a bit, but i think i got it...

Anonymous said...

I'm probably wrong, but I don't think it can be done.

Anonymous said...

Some what questionable, as the stated goal cannot be forced. Best move is 1. Qc8 tightening the noose. There are 6 possible responses:
1.. Ke4 2. Qxa8 #
1.. Pe4 2. Rb5 #
1.. Pd3 2. RxP ck Ke4 3. Qc4 #
1.. Pf4 2. Rb5 ck Ke4 3. Qxa8 #

1.. Bb7 2. Rb5 ck Ke4 3. Qc2 ck Ke3 4. Rb3 # or if
1.. Bb7 2. Qxb7 ck Ke6 3. Qc6 ck Kf7 4. Qf6 ck Kg8 5. Rb8 # or if
1.. Bb7 2. Rxb7 Ke4 3. Rb3 Kd5 4. Qc6 #

1.. Bc6 2. Qxc6 #

So 3 of the 6 solutions are mate in 2, 2 more are mate in 3, and if black really wants to drag it out he can make it to mate in 4.

Unknown said...

Third look is the charm.
1) Qa2 Kc4+ 2) Rf3#
1) Qa2 Ke6+ 2) Rb7#
1) Qa2 Ke4 2) Qg2#
1) Qa2 d3 2) Rb4#
1) Qa2 e4 2)Rb5#
1) Qa2 f4 2) Re3#
1) Qa2 Bb7 2) Re3#
1) Qa2 Bc6 2) Re3#

So I was wrong, it can always be # in 2 with 1) Qa2 !!

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