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A three-mover featuring a matrix which was worked on by a number of
composers, starting with Sam Loyd, until Lucas Bull found the best
setting. Black has only two moves, one of which already has a set
continuation prepared. Meeting the other requires some imagination.
Solution:1...Kxd3 is met by 2.Ra1, clearing a path for the queen: 2...Kc2
or Ke4 3.Qb1 and 2...Kxe2 3.Qf1. The subtle key sends the rook in the
opposite direction, to support a pawn which is currently blocked. After
1.Rg1 (no threat) 1...Kf5 is followed by 2.Sf2 gxf2 3.g4, or 2...hxg1Q
3.Qh3 or h5 (promoting to S forces the latter). The remaining variation is
1...hxg1Q 2.Sc5+ Qxc5 3.Qb1, or 2...Kf5 3.Qh3 or h5.
David Friedgood: Surely one of the finest strategic threemovers ever.
Jacob Hoover: A very clever puzzle; too bad Sam Loyd didn't live to see
the final form.
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