MESON Chess Problem Database

Problem Display
PID: 251532 (4Q1n1/8/4P1pp/3k2p1/1K6/1NP1p2P/4p3/4B3 w - - 0 1)

Bron, Vladimir Akimovich

Shakhmaty v SSSR, 1963

4Q1n1/8/4P1pp/3k2p1/1K6/1NP1p2P/4p3/4B3

#4

7 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Qf7!
      • threat
        • 2.e7+
          • 2...Ke4
            • 3.Sc5+
              • 3...Ke5
                • 4.Bg3#
          • 2...Ke5
            • 3.Bg3+
              • 3...Ke4
                • 4.Sc5#
            • 3.e8Q+
              • 3...Kd6
                • 4.Bg3#
                • 4.Qfd7#
                • 4.Qee6#
              • 3...Se7
                • 4.Qexe7#
          • 2...Kc6
            • 3.e8Q+
              • 3...Kb6
                • 4.Qb5#
                • 4.Qee6#
              • 3...Kd6
                • 4.Bg3#
                • 4.Qfd7#
                • 4.Qee6#
          • 2...Kd6
            • 3.e8Q
              • threat
                • 4.Bg3#
                • 4.Qfd7#
                • 4.Qee6#
      • 1...Ke4
        • 2.Sc5+
          • 2...Kd5
            • 3.Bg3
              • threat
                • 4.Qf3#
                • 4.Qb7#
                • 4.Qd7#
              • 3...Kc6
                • 4.Qb7#
          • 2...Ke5
            • 3.Bg3+
              • 3...Kd5
                • 4.Qf3#
                • 4.Qb7#
                • 4.Qd7#
        • 2.Kc4
          • threat
            • 3.Sc5+
              • 3...Ke5
                • 4.Bg3#
          • 2...Ke5
            • 3.Bg3+
              • 3...Ke4
                • 4.Sc5#
          • 2...Sf6
            • 3.Qxf6
              • threat
                • 4.Sc5#
      • 1...Ke5
        • 2.Bg3+
          • 2...Ke4
            • 3.Sc5+
              • 3...Kd5
                • 4.Qf3#
                • 4.Qb7#
                • 4.Qd7#
          • 2...Kd5
            • 3.Sc5
              • threat
                • 4.Qf3#
                • 4.Qb7#
                • 4.Qd7#
              • 3...Kc6
                • 4.Qb7#
      • 1...Kc6
        • 2.Qd7+
          • 2...Kb6
            • 3.Sa5
              • threat
                • 4.Qb7#
              • 3...Ka6
                • 4.Qb7#
            • 3.Sc5
              • threat
                • 4.Qb7#
      • 1...Kd6
        • 2.Bg3+
          • 2...Kd5
            • 3.Sc5
              • threat
                • 4.Qf3#
                • 4.Qb7#
                • 4.Qd7#
              • 3...Kc6
                • 4.Qb7#
          • 2...Kc6
            • 3.Qc7+
              • 3...Kd5
                • 4.Qc4#
      • 1...Sf6
        • 2.Qb7+
          • 2...Ke5
            • 3.Bg3+
              • 3...Kf5
                • 4.Sd4#
              • 3...Kxe6
                • 4.Sd4#
          • 2...Kd6
            • 3.Bg3+
              • 3...Kxe6
                • 4.Sd4#
          • 2...Kxe6
            • 3.Sd4+
              • 3...Ke5
                • 4.Bg3#
              • 3...Kd6
                • 4.Bg3#
      • 1...Se7
        • 2.Qf3+
          • 2...Ke5
            • 3.Bg3+
              • 3...Kxe6
                • 4.Sc5#
          • 2...Kd6
            • 3.Bg3+
              • 3...Kxe6
                • 4.Sc5#
          • 2...Kxe6
            • 3.Sc5+
              • 3...Ke5
                • 4.Bg3#
              • 3...Kd6
                • 4.Bg3#

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