Archive 2009-2010 The Starter Problems
 
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The Starter Problems
Written by Brian Stephenson   

In this solution, the move that was required is given in bold type. All else is given for the sake of completeness and for the interest of solvers. Threats are given in parentheses. The symbol 'S' stands for knight.

John Rice

3Q2sr/2p4p/p1pP3p/2RP2s1/1PSk4/2S5/2K5/8

Mate in 2

1.dxc6?  (2.dxc7#)

1...cxd6 2.Qxd6#
1...Se6!

1.dxc7!  (2.dxc6#)
1...Se6 2.dxe6# 1...Se4 2.Se2# 1...Sf7 2.Qh4# 1...cxd5 2.Qxd5# 1...Sf6 2.Qxf6# 1...Se7 2.Qxh8#

The following moves, both of which fail as indicated, were given by unsuccessful solvers.

1.Qe8? (2.Qe5,Qe3,Se2#) 1...Se6!
1.Qf8? (2.Qf2#) 1...Sh3!,Sf7!

This problem is a fine illustration of the halfbattery theme, in which two white units stand between a white line-piece and the black king and one of them must be moved away to make a threat. One or more of these moves are close tries, with another one being the key. In this example, untypically for the theme, the white line piece also gives mates.

There were 241 entries this year, of which 39  were incorrect.

Last Updated on Saturday, 19 March 2016 12:07
 
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