MESON Chess Problem Database

Problem Display
PID: 230616 (k7/1p1B4/1P1p2p1/1P1p2p1/8/1p3n2/6n1/2K2Q2 w - - 0 1)

Holm, Carl-Ivar

Schweizerische Schachzeitung, 1987

k7/1p1B4/1P1p2p1/1P1p2p1/8/1p3n2/6n1/2K2Q2

#4

5 + 9

SOLUTION

  • SOUND
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh8#
      • 1...b2+
        • 2.Kxb2
          • threat
            • 3.Qh8#
          • 2...Sgh4
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
          • 2...Sh2
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
          • 2...Sfh4
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
      • 1...Sgh4
        • 2.Kb2
          • threat
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
          • 2...Kb8
            • 3.Qa1
              • threat
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Ka8
                • 4.Qc8#
          • 2...Se1
            • 3.Qxe1
              • threat
                • 4.Qe8#
              • 3...Kb8
                • 4.Qe8#
          • 2...Sg1
            • 3.Qxd5
              • threat
                • 4.Qg8#
              • 3...Kb8
                • 4.Qg8#
      • 1...Sh2
        • 2.Kb2
          • threat
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
          • 2...Kb8
            • 3.Qa1
              • threat
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Ka8
                • 4.Qc8#
          • 2...Se1
            • 3.Qxe1
              • threat
                • 4.Qe8#
              • 3...Kb8
                • 4.Qe8#
      • 1...Sfh4
        • 2.Kb2
          • threat
            • 3.Qa1+
              • 3...Kb8
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Kb8
                • 4.Qc8#
          • 2...Kb8
            • 3.Qa1
              • threat
                • 4.Qa7#
            • 3.Qc1
              • threat
                • 4.Qc8#
              • 3...Ka8
                • 4.Qc8#
          • 2...Se1
            • 3.Qxe1
              • threat
                • 4.Qe8#
              • 3...Kb8
                • 4.Qe8#

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