28 October 2011

One more time

This is the last part of the little series dealing with twinning in chess problems. I picked some more helpmates featuring quite interesting ways of creating twins.


  1Dieter Müller  
Problem-Echo 03/1998
3rd Prize 16th TT (twomovers)
[kb4r1/8/1p2p3/1p6/1KNN2rq/8/6b1/8]
  h#2(3+9)  
a) Diagram
b) wBBc4/d4
c) wRRc4/d4

  2Arthur Christopher Reeves  
The Problemist 01/2008
 
[8/8/8/8/1kr5/8/1N6/K3R3]
  h#2(3+2)  
a) Diagram
b) wK ↔ wR
c) wK ↔ wN
d) bK ↔ bR

  3Henk Weenink  
The Problemist 07/2010
 
[3q4/3b4/8/bPpk2p1/1p6/rppK3p/6p1/6NR]
  h#3(4+12)  
a) Diagram
b) all men that move in a)
change colour

Solutions
1a) 1. Bb7 Nc6 2. Bf4 N×b6#
b) 1. e5 B×b6 2. e4 Bd5#
c) 1. Bf4 Rc7 2. Rg5 Rd8#
This way of twinning demonstrated here was another trigger for me to do some composing. After a short time, I already managed to create a nice h#2 (sorry, I can't reveal details). Based on this, I still try to find improved versions. I guess, you'll see the result(s) in a problem magazine, some day.
2a) 1. Kb3 Kb1 2. Rb4 Re3#
b) 1. Kc3 0-0-0 2. Tb4 Rd3#
c) 1. Rc5 Nb3 2. Rb5 Re4#
d) 1. Kc3 Kb1 2. Kb3 Re3#
I'm not so sure whether the fourth part is necessary — same mate position as in a), but achieved with a tempo move. It fits well with the other parts, though: each time, a king and one of his fellow men change places.
3a) 1. Bc7 Nf3 2. Ra6 Re1 3. Rd6 Re5#
b) 1. Nf3 Bc7 2. Re1 Ra6 3. Re5 Rd6#
Same moves in both solutions with colours reversed. Funny!

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