MESON Chess Problem Database

Problem Display
PID: 246136 (k7/1rpN3K/7b/8/1p1Q4/4pp2/4p3/4n3 w - - 0 1)

Barda, Olaf Martinius (AKA OM Olsen)

1st HM., BCF, 1955

k7/1rpN3K/7b/8/1p1Q4/4pp2/4p3/4n3

#4

3 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qc6
          • threat
            • 3.Qa6+
              • 3...Ra7
                • 4.Qc8#
            • 3.Sc5
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
      • 1...Bg7
        • 2.Sc5
          • threat
            • 3.Qxb7#
          • 2...c6
            • 3.Qxc6
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
      • 1...Bf8
        • 2.Qc6
          • threat
            • 3.Qa6+
              • 3...Ra7
                • 4.Qc8#
          • 2...Bc5
            • 3.Sxc5
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
      • 1...Sd3
        • 2.Qc6
          • threat
            • 3.Qa6+
              • 3...Ra7
                • 4.Qc8#
          • 2...Sc5
            • 3.Sxc5
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
      • 1...c5
        • 2.Kxh6
          • threat
            • 3.Qg8+
              • 3...Ka7
                • 4.Qa2#
              • 3...Rb8
                • 4.Qxb8#
            • 3.Sxc5
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
          • 2...c4
            • 3.Sc5
              • threat
                • 4.Qxb7#
              • 3...Ka7
                • 4.Qxb7#
              • 3...Kb8
                • 4.Qxb7#
      • 1...c6
        • 2.Qa5+
          • 2...Ra7
            • 3.Qd8+
              • 3...Kb7
                • 4.Sc5#

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