Problem Display
PID: 139257 (1Q6/4p3/p3P3/P1pP2p1/2Pk2Pp/3p3P/Pp1P3p/bK5B w - - 0 1)

Erdos, Dr Geza

The Problemist, 1937

1Q6/4p3/p3P3/P1pP2p1/2Pk2Pp/3p3P/Pp1P3p/bK5B

#3

11 + 10


SOLUTION


  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qb3+
        • 2...Kd4
          • 3.Qc3#
  • Tries
    • 1.Qb6?
      • 1...Kxc4
        • 2.Qb3+
          • 2...Kd4
            • 3.Qc3#
      • 1...Ke5!
    • 1.Qb7?
      • 1...Kxc4
        • 2.Qb3+
          • 2...Kd4
            • 3.Qc3#
      • 1...Ke5!
    • 1.Qa8?
      • 1...Ke5
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#
      • 1...Kxc4!
    • 1.Qc8?
      • 1...Ke5
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#
      • 1...Kxc4!
    • 1.Qd8?
      • 1...Ke5
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#
      • 1...Kxc4!
    • 1.Qf8?
      • 1...Ke5
        • 2.Qf2
          • 2...Kd6
            • 3.Qxh2#
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#
      • 1...Kxc4!
    • 1.Qg8?
      • 1...Ke5
        • 2.Qxg5+
          • 2...Kd4
            • 3.Qf4#
          • 2...Kd6
            • 3.Qf4#
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#
      • 1...Kxc4!
  • Keys
    • 1.Qe8!
      • 1...Ke5
        • 2.Qh8+
          • 2...Kf4
            • 3.Qb8#
          • 2...Kd6
            • 3.Qb8#

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).