Problem Display
PID: 47072 (8/3p4/1p3Q1p/3PPn2/R3nk1P/pRP1p1pK/p3P1Pb/1b6 w - - 0 1)

Biscan, Dragutin

Problem (Zagreb), 1979

8/3p4/1p3Q1p/3PPn2/R3nk1P/pRP1p1pK/p3P1Pb/1b6

#4

10 + 12


SOLUTION


  • SOUND
  • Keys
    • 1.Rbb4!
      • threat
        • 2.Ra8
          • threat
            • 3.Rf8
              • threat
                • 4.Qxf5#
      • 1...a1Q
        • 2.Ra8
          • threat
            • 3.Rf8
              • threat
                • 4.Qxf5#
          • 2...Qxc3
            • 3.Rf8
              • threat
                • 4.Qxf5#
              • 3...Qxe5
                • 4.Qxh6#
      • 1...a1S
        • 2.Rxb1
          • threat
            • 3.Rf1#
          • 2...Bg1
            • 3.Rxg1
              • threat
                • 4.Rf1#
            • 3.Rbb4
              • threat
                • 4.Rxe4#
      • 1...h5
        • 2.Ra8
          • threat
            • 3.Re8
              • threat
                • 4.Qg5#
            • 3.Rf8
              • threat
                • 4.Qxf5#
      • 1...d6
        • 2.Ra7
          • threat
            • 3.Rf7
              • threat
                • 4.Qxf5#
          • 2...dxe5
            • 3.Re7
              • threat
                • 4.Qxe5#
            • 3.Rf7
              • threat
                • 4.Qxf5#
                • 4.Qxh6#
            • 3.Rg7
              • threat
                • 4.Rg4#
              • 3...h5
                • 4.Qg5#
            • 3.Qg6
              • threat
                • 4.Qg4#
              • 3...h5
                • 4.Qg5#
        • 2.Ra8
          • threat
            • 3.Rf8
              • threat
                • 4.Qxf5#
          • 2...dxe5
            • 3.Re8
              • threat
                • 4.Qxe5#
            • 3.Rf8
              • threat
                • 4.Qxf5#
                • 4.Qxh6#
            • 3.Rg8
              • threat
                • 4.Rg4#
              • 3...h5
                • 4.Qg5#
            • 3.Qg6
              • threat
                • 4.Qg4#
              • 3...h5
                • 4.Qg5#

FEATURES


NOT CLASSIFIED


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).