MESON Chess Problem Database

Problem Display
PID: 117738 (8/7Q/p7/8/8/8/1KNk4/5r2 w - - 0 1)

Murphy, Joseph

Canadian Chess Association, 1885

8/7Q/p7/8/8/8/1KNk4/5r2

#4

3 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe3+
          • 2...Kd1
            • 3.Qd3#
      • 1...Rb1+
        • 2.Kxb1
          • threat
            • 3.Qe3+
              • 3...Kd1
                • 4.Qe1#
                • 4.Qd3#
          • 2...Kc3
            • 3.Qd4+
              • 3...Kb3
                • 4.Qb4#
      • 1...Re1
        • 2.Qxe1+
          • 2...Kd3
            • 3.Kb3
              • 3...a5
                • 4.Qe3#
        • 2.Sxe1
          • threat
            • 3.Sf3+
              • 3...Kd1
                • 4.Qc2#
                • 4.Qd3#
                • 4.Qe1#
            • 3.Sg2
              • threat
                • 4.Qc2#
              • 3...Kd1
                • 4.Qc2#
                • 4.Qd3#
                • 4.Qe1#
          • 2...Kd1
            • 3.Sg2
              • threat
                • 4.Qc2#
                • 4.Qd3#
                • 4.Qe1#
              • 3...Kd2
                • 4.Qc2#
            • 3.Sf3
              • 3...a5
                • 4.Qc2#
                • 4.Qd3#
                • 4.Qe1#
      • 1...Rf3
        • 2.Qxf3
          • 2...a5
            • 3.Qe3+
              • 3...Kd1
                • 4.Qe1#
                • 4.Qd3#
            • 3.Sd4
              • threat
                • 4.Qe2#
              • 3...Ke1
                • 4.Qe2#

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