Problem Display
PID: 275278 (4Q3/8/1p2b1pK/4k3/1pR1P1P1/1p3prp/2PP1pr1/8 w - - 0 1)

Challenger, Alfred Clement

The Problemist, 1934

4Q3/8/1p2b1pK/4k3/1pR1P1P1/1p3prp/2PP1pr1/8

#3

7 + 11


SOLUTION


  • COOKED
  • Tries
    • 1.Qxe6+?
      • 1...Kf4
        • 2.e5#
      • 1...Kxe6!
    • 1.Qh8+?
      • 1...Kf4
        • 2.Qf6+
          • 2...Kxg4
            • 3.Qg5#
          • 2...Bf5
            • 3.exf5#
            • 3.e5#
      • 1...Kd6!
    • 1.d4+?
      • 1...Kxe4
        • 2.Qxe6+
          • 2...Kf4
            • 3.d5#
      • 1...Kf4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Qh8+
          • 2...Kf4
            • 3.e5#
      • 1...Kxd4
        • 2.Qxe6
          • threat
            • 3.Qd5#
          • 2...Kc5
            • 3.Qd5#
      • 1...Kf4
        • 2.Qxe6
          • threat
            • 3.e5#
          • 2...Rxg4
            • 3.Qd6#
        • 2.e5+
          • 2...Kxe5
            • 3.Qh8#
      • 1...Kf6
        • 2.e5+
          • 2...Kxe5
            • 3.Qh8#
      • 1...Rxg4
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
    • 1.Qe7!
      • threat
        • 2.Qc7+
          • 2...Kf6
            • 3.Qg7#
            • 3.e5#
      • 1...Rxg4
        • 2.Qc7+
          • 2...Kf6
            • 3.Qg7#
        • 2.Qg7+
          • 2...Kf4
            • 3.Qc7#
          • 2...Kd6
            • 3.Qc7#

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).