Problem Display
PID: 210023 (2N5/2p5/8/1Nk5/8/1Q3P2/6K1/8 w - - 0 1)

Lamy, CS

La Strategie, 1884

2N5/2p5/8/1Nk5/8/1Q3P2/6K1/8

#4

5 + 2


6490 yacpdb 2020

SOLUTION


  • COOKED
  • Keys
    • 1.Kf2!
      • 1...Kc6
        • 2.Sd4+
          • 2...Kc5
            • 3.Ke3
              • 3...c6
                • 4.Se6#
          • 2...Kd7
            • 3.Qe6+
              • 3...Kd8
                • 4.Sc6#
      • 1...c6
        • 2.Sbd6
          • 2...Kd4
            • 3.f4
              • threat
                • 4.Qc4#
              • 3...Kc5
                • 4.Qc4#
    • 1.Qa4!
      • threat
        • 2.Sa3
          • threat
            • 3.Qc4#
          • 2...Kd5
            • 3.Qe4+
              • 3...Kc5
                • 4.Qc4#
      • 1...Kd5
        • 2.Qe4+
          • 2...Kc5
            • 3.Sa3
              • 3...c6
                • 4.Qc4#
      • 1...Kc6
        • 2.Sbd6+
          • 2...Kd5
            • 3.Qe4+
              • 3...Kc5
                • 4.Qc4#
      • 1...c6
        • 2.Sa3
          • 2...Kd5
            • 3.Qe4+
              • 3...Kc5
                • 4.Qc4#
        • 2.Sbd6
          • 2...Kd5
            • 3.Qe4+
              • 3...Kc5
                • 4.Qc4#
            • 3.Qf4
              • 3...Kc5
                • 4.Qc4#
              • 3...Ke6
                • 4.Qf5#
              • 3...c5
                • 4.Qe4#

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).