Problem Display
PID: 91063 (8/3K4/8/3n4/8/2prp1Qp/4pp2/4bk2 w - - 0 1)

Mortensen, Jan Robert (aka 'Adamas')

Die Schwalbe, 1960

8/3K4/8/3n4/8/2prp1Qp/4pp2/4bk2

#4

2 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qh1#
      • 1...Sb4+
        • 2.Ke6
          • threat
            • 3.Qh1#
          • 2...Rd6+
            • 3.Kxd6
              • threat
                • 4.Qh1#
      • 1...Sf4+
        • 2.Kc6
          • threat
            • 3.Qh1#
          • 2...Rd6+
            • 3.Kxd6
              • threat
                • 4.Qh1#
      • 1...Sb6+
        • 2.Ke8
          • threat
            • 3.Qh1#
          • 2...Rd8+
            • 3.Kxd8
              • threat
                • 4.Qh1#
      • 1...Sf6+
        • 2.Kc8
          • threat
            • 3.Qh1#
          • 2...Rd8+
            • 3.Kxd8
              • threat
                • 4.Qh1#
      • 1...Sc7+
        • 2.Kxc7
          • threat
            • 3.Qh1#
          • 2...Rd7+
            • 3.Kxd7
              • threat
                • 4.Qh1#
        • 2.Ke7
          • threat
            • 3.Qh1#
          • 2...Rd7+
            • 3.Kxd7
              • threat
                • 4.Qh1#
          • 2...Sd5+
            • 3.Kf7
              • threat
                • 4.Qh1#
            • 3.Kf8
              • threat
                • 4.Qh1#
      • 1...Se7+
        • 2.Kxe7
          • threat
            • 3.Qh1#
          • 2...Rd7+
            • 3.Kxd7
              • threat
                • 4.Qh1#
        • 2.Kc7
          • threat
            • 3.Qh1#
          • 2...Rd7+
            • 3.Kxd7
              • threat
                • 4.Qh1#
          • 2...Sd5+
            • 3.Kb7
              • threat
                • 4.Qh1#
            • 3.Kb8
              • threat
                • 4.Qh1#

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).