Archive 2011-2012 The Starter Problem
 
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The Starter Problem
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

8/8/B7/KP5q/1SkPP1R1/4Qp2/4b3/8

Mate in 2

1.e5!    (2.b6#)

1...Bd3  2.Qxd3#
1...Qxe5 2.dxe5#
1...Qe8  2.d5#

The following moves were incorrectly claimed as the key. They are followed by their refutations:

Claim Refutations
1.d5 1...Bd3!
1.b6 Illegal move! This pawn is pinned!
1.Sa2 1...Bd3!
1.Sc6 1...Qg5!, 1...Qf5!, 1...Qd5!, 1...Qc5!, 1...f2!, 1...Bd1!, 1...Bd3!, 1...Bf1!
1.Sc2 1...Qc5!, 1...Bd3!
1.Sd5 1...Qxd5!, 1...Bd3!
1.Qc1+ 1...Kb3!, 1...Kxd4!
1.Rg1 1...Bf1!
1.Rh4 1...Qe8!, 1...Qg5!, 1...Qf5!, 1...Qe5!, 1...Qd5!, 1...Qc5!, 1...f2!, 1...Bf1!
1.Ka4 1...Bd1+!, 1...Qe8!, 1...Qg5!, 1...Qf5!, 1...Qe5!, 1...Qd5!, 1...Qc5!, 1...f2!, 1...Bf1!

There were 249 entries this year, of which 42 were incorrect.

 
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