Problem Display
PID: 269495 (1K6/3p4/8/5P2/3Bk3/8/QN2N3/8 w - - 0 1)

Petrasinovic, Petrasin

Comm., The Macedonian Problemist, 2020

1K6/3p4/8/5P2/3Bk3/8/QN2N3/8

#4

6 + 2


SOLUTION


  • SOUND
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sf2+
          • 2...Kf3
            • 3.Qb3+
              • 3...Kxe2
                • 4.Qd1#
              • 3...Kg2
                • 4.Qh3#
          • 2...Kxf5
            • 3.Qg8
              • threat
                • 4.Qg4#
      • 1...Kf3
        • 2.Sf2
          • threat
            • 3.Qb3+
              • 3...Kxe2
                • 4.Qd1#
              • 3...Kg2
                • 4.Qh3#
          • 2...Kg2
            • 3.Qb1
              • threat
                • 4.Qh1#
              • 3...Kh2
                • 4.Qg1#
                • 4.Qh1#
              • 3...Kf3
                • 4.Qe4#
      • 1...Kxf5
        • 2.Qg8
          • threat
            • 3.Sf2
              • threat
                • 4.Qg4#
          • 2...Ke4
            • 3.Sf2+
              • 3...Kf3
                • 4.Qg4#
              • 3...Kf5
                • 4.Qg4#
          • 2...d5
            • 3.Sb2
              • 3...Ke4
                • 4.Qg4#
          • 2...d6
            • 3.Sf2
              • 3...d5
                • 4.Qg4#
      • 1...d5
        • 2.Qb1+
          • 2...Kf3
            • 3.Sf2
              • 3...Kxe2
                • 4.Qd1#
              • 3...Kg2
                • 4.Qh1#
      • 1...d6
        • 2.Sf2+
          • 2...Kf3
            • 3.Qb3+
              • 3...Kxe2
                • 4.Qd1#
              • 3...Kg2
                • 4.Qh3#
          • 2...Kxf5
            • 3.Qg8
              • 3...d5
                • 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).