Problem Display
PID: 170437 (8/1p1N2R1/3p4/pk6/5Q2/4K3/8/8 w - - 0 1)

Petrasinovic, Petrasin

Sachmatija, 2012

8/1p1N2R1/3p4/pk6/5Q2/4K3/8/8

#3

4 + 4


SOLUTION


  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qc4#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Rg4
          • threat
            • 3.Qb6#
          • 2...b6
            • 3.Qxb6#
      • 1...Kc4
        • 2.Qd3+
          • 2...Kb4
            • 3.Rg4#
      • 1...b6
        • 2.Rg4
          • threat
            • 3.Qxb6#
          • 2...Ka6
            • 3.Qxb6#
      • 1...a4
        • 2.Rg4
          • threat
            • 3.Qb6#
          • 2...Ka5
            • 3.Qb6#
          • 2...b6
            • 3.Qxb6#
        • 2.Qc5+
          • 2...Ka6
            • 3.Sb8#
            • 3.Qb6#
      • 1...Ka4!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Rxb7+
          • 2...Kc5
            • 3.Qd4#
      • 1...Kc5
        • 2.Qd4+
          • 2...Kb5
            • 3.Rxb7#
      • 1...Kb6
        • 2.Qd4+
          • 2...Kb5
            • 3.Rxb7#
      • 1...a4
        • 2.Rxb7+
          • 2...Ka5
            • 3.Qb4#
          • 2...Kc5
            • 3.Qd4#
      • 1...d5
        • 2.Rxb7+
          • 2...Kc5
            • 3.Qc7#
      • 1...b6
        • 2.Rg5+
          • 2...d5
            • 3.Rxd5#

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).