Problem Display
PID: 25843 (6Q1/3p4/3p1k2/1p6/1p2pP2/r2PBppK/8/8 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

1/2 Prize, Shakhmatnaya Moskva, 1967

6Q1/3p4/3p1k2/1p6/1p2pP2/r2PBppK/8/8

#3

5 + 9


2988 Izbrannie Kompozitsi 1985

SOLUTION


  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf7#
  • Tries
    • 1.Bd4+?
      • 1...Kf5
        • 2.Qf7#
        • 2.Qg4#
      • 1...Ke7!
  • Keys
    • 1.f5!
      • threat
        • 2.Bd4+
          • 2...Kxf5
            • 3.Qg4#
          • 2...Ke7
            • 3.f6#
      • 1...Ke5
        • 2.d4+
          • 2...Kxf5
            • 3.Qf7#
          • 2...Kf6
            • 3.Qf8#
      • 1...Kxf5
        • 2.Bd4
          • threat
            • 3.Qg4#
          • 2...Kf4
            • 3.Qg4#
        • 2.Qf7+
          • 2...Ke5
            • 3.d4#
      • 1...Rxd3
        • 2.Bf4
          • threat
            • 3.Qf8#
          • 2...Kxf5
            • 3.Qf7#
          • 2...Ke7
            • 3.Bg5#
      • 1...d5
        • 2.Qf8+
          • 2...Ke5
            • 3.d4#

FEATURES


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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).