MESON Chess Problem Database

Problem Display
PID: 220820 (8/7n/2p5/2R5/2B1N3/8/1k2K3/8 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Deutsche Schachzeitung, 1967

8/7n/2p5/2R5/2B1N3/8/1k2K3/8

#4

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sd3+
          • 2...Ka1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kc3
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#
      • 1...Ka1
        • 2.Sd3
          • threat
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
      • 1...Kb1
        • 2.Sd3
          • threat
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Ka1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
      • 1...Kc1
        • 2.Sd3+
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
        • 2.Be6+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
        • 2.Bf7+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
        • 2.Bg8+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
      • 1...Kc2
        • 2.Be6+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
        • 2.Bf7+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
        • 2.Bg8+
          • 2...Kb1
            • 3.Sd3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kb2
            • 3.Sd3+
              • 3...Ka1
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
              • 3...Ka3
                • 4.Ra5#
        • 2.Sd3
          • threat
            • 3.Ba2#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Be6
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bf7
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
            • 3.Bg8
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kc3
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#
      • 1...Ka3
        • 2.Sd3
          • threat
            • 3.Ra5#
          • 2...Ka4
            • 3.Rxc6
              • threat
                • 4.Ra6#
              • 3...Ka3
                • 4.Ra6#
              • 3...Ka5
                • 4.Ra6#
      • 1...Kc3
        • 2.Sd3
          • threat
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#
          • 2...Kd4
            • 3.Be6
              • threat
                • 4.Rc4#
              • 3...Ke4
                • 4.Rc4#
      • 1...Sg5
        • 2.Sd3+
          • 2...Ka1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kc3
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#
      • 1...Sf6
        • 2.Sd3+
          • 2...Ka1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kc3
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#
      • 1...Sf8
        • 2.Sd3+
          • 2...Ka1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Kb1
                • 4.Rc1#
          • 2...Kb1
            • 3.Bb3
              • threat
                • 4.Rc1#
              • 3...Ka1
                • 4.Rc1#
          • 2...Kc3
            • 3.Be6+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bf7+
              • 3...Kd4
                • 4.Rc4#
            • 3.Bg8+
              • 3...Kd4
                • 4.Rc4#

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