Problem Display
PID: 44335 (8/p1Q5/8/Pk1pp3/8/8/1PN2K2/8 w - - 0 1)

Markwick, Frederick W

The Problemist, 1929

8/p1Q5/8/Pk1pp3/8/8/1PN2K2/8

#3

5 + 4


SOLUTION


  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qc6+
        • 2...Kxa5
          • 3.b4#
    • 1...a6
      • 2.b3
        • threat
          • 3.Qb6#
  • Tries
    • 1.Sd4+?
      • 1...Ka4
        • 2.Qc6+
          • 2...Kb4
            • 3.Qb5#
          • 2...Kxa5
            • 3.Qb5#
        • 2.Qd7+
          • 2...Kb4
            • 3.Qb5#
          • 2...Kxa5
            • 3.Qb5#
      • 1...Kb4
        • 2.Qc3+
          • 2...Ka4
            • 3.Qa3#
      • 1...Ka6
        • 2.Qc6+
          • 2...Kxa5
            • 3.Qb5#
        • 2.b4
          • threat
            • 3.Qc6#
            • 3.Qc8#
            • 3.b5#
      • 1...exd4!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Sa3+
          • 2...Kd3
            • 3.Qe3#
        • 2.Qb4+
          • 2...Kd3
            • 3.Se1#
      • 1...axb6!
    • 1.Qc5+?
      • 1...Ka6
        • 2.Qxd5
          • 2...e4
            • 3.Sb4#
        • 2.Qc6+
          • 2...Kxa5
            • 3.b4#
      • 1...Kxc5!
    • 1.Qc6+?
      • 1...Kxa5
        • 2.b4#
      • 1...Kxc6!
    • 1.Qb7+?
      • 1...Kc4
        • 2.Qb4+
          • 2...Kd3
            • 3.Se1#
      • 1...Kxa5
        • 2.Qc6
          • threat
            • 3.b4#
      • 1...Kc5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxd5+
          • 2...Ka4
            • 3.b3#
          • 2...Ka6
            • 3.Sb4#
      • 1...Kc4
        • 2.Qb4+
          • 2...Kd3
            • 3.Se1#
      • 1...Kxa5
        • 2.Qc6
          • threat
            • 3.b4#
      • 1...d4
        • 2.Qd5+
          • 2...Ka4
            • 3.b3#
          • 2...Ka6
            • 3.Sb4#
      • 1...a6
        • 2.Qxd5+
          • 2...Ka4
            • 3.b3#
        • 2.b3
          • threat
            • 3.Qxd5#
            • 3.Qb6#
          • 2...Kxa5
            • 3.Qb4#
            • 3.Qc5#

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).