25 January 2011

Mate me if you can

Today's subject is Reflex Chess. It was invented in the 1880's by William Geary and B. J. Laws, and was reviewed in the May 1907 issue of Chess Amateur. Orthodox chess rules apply, except that the winner is the player whose king is checkmated. If a move gives mate, then the player must make such a move. It has been used primarily as a problem theme called reflexmate.

Fadil Abdurahmanovic
Bilten 11/1961
[8/1PP3P1/8/4p3/8/8/8/k1K5]
  r#4(4+2)  
Solution:

White intends to block c2 and get checkmated via e1=Q#. The first step is to control a2, so that Black has to move the pawn.

1. g8=Q? e4 2. Qa8#
shows that White has to be careful.

1. g8=B! e4

A rook is necessary to block c2, but the direct way fails:
2. c8=R? e3 3. Ra8#
Thus, Ra8# has to be prevented. Again, look out!
2. b8=B? e3 3. c8=R e2 4. Be5#

2. b8=N! e3 3. c8=R e2 4. Rc2 e1=Q#

An instructive problem, perfectly demonstrating the characteristics of reflexmate. It also shows an Allumwandlung of the type BNRq.

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