MESON Chess Problem Database

Problem Display
PID: 83281 (8/8/7K/8/2QN4/8/NP6/kb3n2 w - - 0 1)

Havel, Miroslav

Sach, 1943

8/8/7K/8/2QN4/8/NP6/kb3n2

#4

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sb3+
          • 2...Kxa2
            • 3.Sc1+
              • 3...Ka1
                • 4.b3#
                • 4.b4#
        • 2.Sb4
          • threat
            • 3.Sb3#
            • 3.b3#
          • 2...Ba2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
                • 4.Qc2#
              • 3...Bxb3
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Bd3
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Be4
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Bf5
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Bg6
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Bh7
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
      • 1...Bxa2
        • 2.Sc2+
          • 2...Kb1
            • 3.Sa3+
              • 3...Ka1
                • 4.b3#
                • 4.b4#
      • 1...Bc2
        • 2.b4+
          • 2...Kb1
            • 3.Qxc2+
              • 3...Ka1
                • 4.Sb3#
            • 3.Qa3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Kxa2
            • 3.Qxc2+
              • 3...Ka1
                • 4.Sb3#
              • 3...Ka3
                • 4.Qb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Bb3
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Bd3
        • 2.Sb4
          • threat
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Kb1
            • 3.Sb3
              • threat
                • 4.Qc1#
              • 3...Bc2
                • 4.Qxc2#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Sd2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Bc4
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Be4
        • 2.Sb4
          • threat
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Kb1
            • 3.Sb3
              • threat
                • 4.Qc1#
              • 3...Bc2
                • 4.Qxc2#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Sd2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Bd5
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Bf5
        • 2.Sb4
          • threat
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Kb1
            • 3.Sb3
              • threat
                • 4.Qc1#
              • 3...Bc2
                • 4.Qxc2#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Sd2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Be6
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Bg6
        • 2.Sb4
          • threat
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Kb1
            • 3.Sb3
              • threat
                • 4.Qc1#
              • 3...Bc2
                • 4.Qxc2#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Sd2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Bf7
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Bh7
        • 2.Sb4
          • threat
            • 3.Sb3+
              • 3...Kb1
                • 4.Qc1#
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
                • 4.Sb3#
          • 2...Kb1
            • 3.Sb3
              • threat
                • 4.Qc1#
              • 3...Bc2
                • 4.Qxc2#
          • 2...Bc2
            • 3.Sb3+
              • 3...Kb1
                • 4.Qxc2#
              • 3...Bxb3
                • 4.Qc1#
          • 2...Sd2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
        • 2.Qa3
          • threat
            • 3.Sc3#
          • 2...Kb1
            • 3.b3
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
            • 3.b4
              • threat
                • 4.Sc3#
              • 3...Ka1
                • 4.Sc3#
          • 2...Bg8
            • 3.Sc3+
              • 3...Ba2
                • 4.Sc2#
                • 4.Sb3#
                • 4.Qxa2#
      • 1...Sd2
        • 2.Sb4
          • threat
            • 3.b3#
          • 2...Ba2
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sbc2#
                • 4.Sdc2#
          • 2...Bc2
            • 3.Qxc2
              • 3...Sb1
                • 4.Sb3#
              • 3...Sf1
                • 4.Sb3#
                • 4.Qc1#
              • 3...Sb3
                • 4.Sxb3#
              • 3...Sf3
                • 4.Sb3#
                • 4.Qc1#
              • 3...Sc4
                • 4.Sb3#
                • 4.Qc1#
              • 3...Se4
                • 4.Sb3#
                • 4.Qc1#
          • 2...Bd3
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
          • 2...Be4
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
          • 2...Bf5
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
          • 2...Bg6
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#
          • 2...Bh7
            • 3.Qc1+
              • 3...Bb1
                • 4.Sdc2#
              • 3...Sb1
                • 4.Sb3#

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