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A three-mover with a nice open position which will amply reward the successful solver.
As a pre-teenage chessplayer new to the world of composition, this problem provided
one of my earliest solving thrills. A check on b1 can easily cope with king moves to the
west, and with the rook free to check on the rank there seems no reason for him to hide
behind a pawn which is blocked by the queen. The resulting beautiful mate comes as a
1...Kd4 2.Qd3+ Ke5 3.f4;
1...Kxb5 or Kb4 2.Rb1+ Ka6 3.Qa8; 2...Kc4 3.Qd3 or Qe4;
1...e5 2.Rb1 Kd4 3.Qd3; 2...e4 3.Qxe4.
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