Problem Display
PID: 71790 (qb6/rb6/4B1p1/1n4r1/NPP1k1p1/1P4p1/3PP1n1/Q1K2R1N w - - 0 1)

Rudenko, Valentin Fedorovich

2nd Prize, Themes-64, 1974

qb6/rb6/4B1p1/1n4r1/NPP1k1p1/1P4p1/3PP1n1/Q1K2R1N

#4

11 + 11


3771 FIDE Album (1974-1976) 1980

SOLUTION


  • SOUND
  • Keys
    • 1.Qf6!
      • threat
        • 2.Sf2+
          • 2...gxf2
            • 3.d3+
              • 3...Ke3
                • 4.Qxf2#
      • 1...Re5
        • 2.Rf4+
          • 2...Sxf4
            • 3.Sc5+
              • 3...Kd4
                • 4.e3#
              • 3...Rxc5
                • 4.Sxg3#
        • 2.Rf3
          • threat
            • 3.Sxg3+
              • 3...Kd4
                • 4.Rd3#
            • 3.Sc5+
              • 3...Kd4
                • 4.Rd3#
              • 3...Rxc5
                • 4.d3#
          • 2...Kd4
            • 3.Rd3+
              • 3...Ke4
                • 4.Sxg3#
          • 2...gxf3
            • 3.Qxf3+
              • 3...Kd4
                • 4.Qd3#
          • 2...Rd5
            • 3.Sc5+
              • 3...Rxc5
                • 4.d3#
            • 3.Bxd5+
              • 3...Bxd5
                • 4.Sc5#
                • 4.d3#
            • 3.d3+
              • 3...Rxd3
                • 4.Sc5#
                • 4.exd3#
          • 2...Sc3
            • 3.Sxg3+
              • 3...Kd4
                • 4.Rd3#
                • 4.dxc3#
            • 3.Sxc3+
              • 3...Kd4
                • 4.Rd3#
            • 3.Sc5+
              • 3...Kd4
                • 4.Rd3#
                • 4.dxc3#
              • 3...Rxc5
                • 4.d3#
      • 1...Be5
        • 2.Bd5+
          • 2...Bxd5
            • 3.Sxg3+
              • 3...Kd4
                • 4.Qb6#
              • 3...Bxg3
                • 4.Sc5#
      • 1...Se1
        • 2.Qxg5
          • threat
            • 3.Qe3#
          • 2...Sd3+
            • 3.exd3+
              • 3...Kxd3
                • 4.Qe3#
              • 3...Kd4
                • 4.Qe3#
          • 2...Sc2
            • 3.d3+
              • 3...Kd4
                • 4.Qc5#
          • 2...Sg2
            • 3.d3+
              • 3...Kd4
                • 4.Qc5#

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