Problem Display
PID: 93453 (6Q1/8/7p/4pKbr/8/7p/3R4/6k1 w - - 0 1)

Davidenko, Fedor Vasilevich

Shakhmaty v SSSR, 1979

6Q1/8/7p/4pKbr/8/7p/3R4/6k1

#3

3 + 6


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qc4+
        • 2...Ke1
          • 3.Qe2#
          • 3.Qc1#
        • 2...Kg1
          • 3.Qc1#
    • 1...Kh1
      • 2.Qa8+
        • 2...Kg1
          • 3.Qa1#
        • 2...e4
          • 3.Qa1#
    • 1...e4
      • 2.Qg7
        • threat
          • 3.Qa1#
        • 2...Kf1
          • 3.Qa1#
        • 2...Kh1
          • 3.Qa1#
  • Tries
    • 1.Kxe5?
      • threat
        • 2.Qg6
          • threat
            • 3.Qb1#
          • 2...Kf1
            • 3.Qb1#
          • 2...Kh1
            • 3.Qb1#
      • 1...Kf1
        • 2.Qc4+
          • 2...Ke1
            • 3.Qe2#
            • 3.Qc1#
          • 2...Kg1
            • 3.Qc1#
      • 1...Kh1
        • 2.Qa8+
          • 2...Kg1
            • 3.Qa1#
      • 1...Rh4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Kxe5
          • threat
            • 3.Qb1#
          • 2...Kf1
            • 3.Qb1#
          • 2...Kh1
            • 3.Qb1#
      • 1...Kf1
        • 2.Qa6+
          • 2...Ke1
            • 3.Qe2#
          • 2...Kg1
            • 3.Qa1#
      • 1...Kh1
        • 2.Qc6+
          • 2...Kg1
            • 3.Qc1#
          • 2...e4
            • 3.Qc1#
      • 1...Rh4
        • 2.Qb6+
          • 2...Kf1
            • 3.Qf2#
            • 3.Qb1#
          • 2...Kh1
            • 3.Qb1#
          • 2...Rd4
            • 3.Qb1#
          • 2...Be3
            • 3.Qb1#
      • 1...e4
        • 2.Qg7
          • threat
            • 3.Qa1#
          • 2...Kf1
            • 3.Qa1#
          • 2...Kh1
            • 3.Qa1#

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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).