Problem Display
PID: 216411 (7n/1Q6/2R5/3K4/8/5kpN/5p1q/b4Nr1 w - - 0 1)

Denes, G

Probleemblad, 1980

7n/1Q6/2R5/3K4/8/5kpN/5p1q/b4Nr1

#3

5 + 7


SOLUTION


  • SOUND
  • Tries
    • 1.Qh7?
      • threat
        • 2.Qe4#
      • 1...Ke2
        • 2.Qd3+
          • 2...Ke1
            • 3.Rc1#
          • 2...Kxd3
            • 3.Sf4#
      • 1...Kg2
        • 2.Qe4+
          • 2...Kxf1
            • 3.Rc1#
          • 2...Kxh3
            • 3.Rh6#
      • 1...Kg4
        • 2.Qf5+
          • 2...Kh4
            • 3.Rh6#
          • 2...Kxf5
            • 3.Se3#
      • 1...Sg6!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe4#
      • 1...Ke2
        • 2.Qd3+
          • 2...Ke1
            • 3.Rc1#
          • 2...Kxd3
            • 3.Sf4#
      • 1...Kg2
        • 2.Qe4+
          • 2...Kxf1
            • 3.Rc1#
          • 2...Kxh3
            • 3.Rh6#
      • 1...Kg4
        • 2.Qf5+
          • 2...Kh4
            • 3.Rh6#
          • 2...Kxf5
            • 3.Se3#

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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).