Problem Display
PID: 52689 (8/3p4/Kn5N/3PRP2/pBkr1PQ1/2Pp2p1/P2P3p/5B1q w - - 0 1)

Kofman, Rafael Moiseevich

Shakhmatny Listok, 1931

8/3p4/Kn5N/3PRP2/pBkr1PQ1/2Pp2p1/P2P3p/5B1q

#3

12 + 9


56 The Problemist 2004

SOLUTION


  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Qxf4+
        • 2...Qe4
          • 3.Qxe4#
    • 1...a3
      • 2.Qd1
        • threat
          • 3.Qb3#
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sf7
          • threat
            • 3.Sd6#
          • 2...Sc8
            • 3.Qxc8#
          • 2...d6
            • 3.Sxd6#
      • 1...Qxd5
        • 2.Sg4
          • threat
            • 3.Se3#
          • 2...Re4
            • 3.Rxe4#
      • 1...Rxd5
        • 2.Re3
          • threat
            • 3.Bxd3#
          • 2...Qxf1
            • 3.Re4#
          • 2...Qe4
            • 3.Rxe4#
      • 1...Sxd5
        • 2.Re8
          • threat
            • 3.Rc8#
      • 1...Qe4
        • 2.Sf7
          • threat
            • 3.Sd6#
          • 2...Qxe5
            • 3.Sxe5#
          • 2...Sc8
            • 3.Qxc8#
          • 2...d6
            • 3.Sxd6#
      • 1...Sa8
        • 2.Qc8+
          • 2...Sc7+
            • 3.Qxc7#
      • 1...d6
        • 2.Sf7
          • threat
            • 3.Sxd6#
          • 2...dxe5
            • 3.Sxe5#
            • 3.Sd6#
          • 2...Sc8
            • 3.Qxc8#

This is a version

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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).