Problem Display
PID: 210963 (8/2p5/2p2QR1/r1PkN3/p7/6p1/K1PP4/4n3 w - - 0 1)

Barda, Olaf Martinius (AKA OM Olsen)

1st Prize, Westminster Gazette, 1927

8/2p5/2p2QR1/r1PkN3/p7/6p1/K1PP4/4n3

#3

7 + 7


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Qe6+
        • 2...Kd4
          • 3.Rg4#
        • 2...Ke4
          • 3.Rg4#
  • Tries
    • 1.Qe6+?
      • 1...Kd4
        • 2.Rg4+
          • 2...Kxc5
            • 3.Qxc6#
        • 2.c3+
          • 2...Ke4
            • 3.Rg4#
          • 2...Kxc5
            • 3.Qxc6#
      • 1...Kxc5!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Qxc6+
          • 2...Kd4
            • 3.c3#
      • 1...Kd4
        • 2.Qf4+
          • 2...Kxc5
            • 3.Sd7#
          • 2...Kd5
            • 3.Qc4#
      • 1...Ke4
        • 2.Qe6
          • threat
            • 3.Rg4#
            • 3.Qc4#
          • 2...Kd4
            • 3.Sxc6#
            • 3.Qc4#
          • 2...Kf4
            • 3.Rg4#
            • 3.Qg4#
            • 3.Qf5#
      • 1...Kxc5
        • 2.Sc4+
          • 2...Kb4
            • 3.Qc3#
          • 2...Kxc4
            • 3.Qc3#
            • 3.Qf4#
        • 2.Sd7+
          • 2...Kb4
            • 3.Qc3#
            • 3.Qd4#
            • 3.Qf4#
          • 2...Kc4
            • 3.Qc3#
            • 3.Qf4#
        • 2.Qxc6+
          • 2...Kb4
            • 3.Rg4#
            • 3.Qc4#
            • 3.c3#
          • 2...Kd4
            • 3.Qc4#
            • 3.c3#
      • 1...Rxc5
        • 2.Sd3+
          • 2...Kc4
            • 3.Rxc5#
          • 2...Ke4
            • 3.Sxc5#
            • 3.Qf4#
      • 1...Sxc2
        • 2.Sxc6+
          • 2...Kc4
            • 3.Qf1#
          • 2...Ke4
            • 3.Qf5#
      • 1...Ra6
        • 2.Qf4
          • threat
            • 3.Qc4#
          • 2...Kxc5
            • 3.Sd7#
          • 2...Ke6
            • 3.Qf7#

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).