Problem Display
PID: 209967 (8/6Q1/1pp5/k7/1p6/pK6/8/1N6 w - - 0 1)

Lehner, Sigmund Franz Josef

Vasarnapi Ujsag, 1883

8/6Q1/1pp5/k7/1p6/pK6/8/1N6

#4

3 + 5


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Keys
    • 1.Sxa3!
      • threat
        • 2.Qa7#
      • 1...Ka6
        • 2.Sb5
          • 2...Ka5
            • 3.Sd6
              • threat
                • 4.Qa1#
                • 4.Qa7#
              • 3...Ka6
                • 4.Qa1#
          • 2...Kxb5
            • 3.Qa1
              • 3...Kc5
                • 4.Qe5#
              • 3...c5
                • 4.Qa4#
          • 2...cxb5
            • 3.Qc7
              • 3...Ka5
                • 4.Qa7#
            • 3.Qd7
              • 3...Ka5
                • 4.Qa7#
            • 3.Qe7
              • 3...Ka5
                • 4.Qa7#
            • 3.Qf7
              • 3...Ka5
                • 4.Qa7#
            • 3.Qh7
              • 3...Ka5
                • 4.Qa7#
          • 2...c5
            • 3.Qa7+
              • 3...Kxb5
                • 4.Qa4#
            • 3.Ka4
              • threat
                • 4.Qa7#
            • 3.Kc4
              • threat
                • 4.Qa7#
              • 3...Ka5
                • 4.Qa1#
                • 4.Qa7#
      • 1...bxa3
        • 2.Qa7+
          • 2...Kb5
            • 3.Qxa3
              • 3...c5
                • 4.Qa4#

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).