Problem Display
PID: 266772 (4Q1nb/3p4/2p2p2/3p1N2/3PBk1p/2pR1N1K/2p1b1n1/8 w - - 0 1)

Tyunin, Aleksandr Dmitrevich

Zadachi i Etyudi, 2011

4Q1nb/3p4/2p2p2/3p1N2/3PBk1p/2pR1N1K/2p1b1n1/8

#4

7 + 12


SOLUTION


  • SOUND
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qg4#
      • 1...Bxf3
        • 2.Rxf3+
          • 2...Kxe4
            • 3.Qg4+
              • 3...Sf4+
                • 4.Qxf4#
      • 1...Se3
        • 2.Rxe3
          • threat
            • 3.Qg4#
          • 2...Bf1+
            • 3.Kxh4
              • threat
                • 4.Qg3#
                • 4.Qg4#
          • 2...Bxf3
            • 3.Rxf3+
              • 3...Kxe4
                • 4.Qg4#
      • 1...Sh6
        • 2.Sd6
          • threat
            • 3.Qxh6#
          • 2...Bg7
            • 3.Qxg7
              • threat
                • 4.Qxh6#
              • 3...Sg4
                • 4.Qxg4#
              • 3...Sf5
                • 4.Qg4#
              • 3...Sf7
                • 4.Qxf6#
                • 4.Qg4#
              • 3...Sg8
                • 4.Qg4#

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).