Problem Display
PID: 39794 (7b/2K5/1p2B2p/2pPk3/1P5Q/8/3P4/8 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Recomm., BCF 023. Ty., 1936-1937

7b/2K5/1p2B2p/2pPk3/1P5Q/8/3P4/8

#3

6 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...cxb4
      • 2.d4#
    • 1...b5
      • 2.bxc5
        • threat
          • 3.d4#
  • Tries
    • 1.Kxb6?
      • threat
        • 2.Kxc5
          • threat
            • 3.Qd4#
            • 3.d4#
        • 2.bxc5
          • threat
            • 3.d4#
      • 1...Kd6
        • 2.bxc5+
          • 2...Ke5
            • 3.d4#
      • 1...cxb4
        • 2.Kc5
          • threat
            • 3.Qd4#
            • 3.d4#
        • 2.Kc6
          • threat
            • 3.d4#
        • 2.Kc7
          • threat
            • 3.d4#
        • 2.d4+
          • 2...Kd6
            • 3.Qd8#
      • 1...Bg7
        • 2.bxc5
          • threat
            • 3.d4#
      • 1...c4
        • 2.Kc5
          • threat
            • 3.Qd4#
      • 1...Bf6!
    • 1.Qg3+?
      • 1...Kd4
        • 2.Qc3+
          • 2...Ke4
            • 3.Qe3#
        • 2.d6
          • threat
            • 3.Qe3#
          • 2...Ke4
            • 3.Qe3#
      • 1...Kf6!
    • 1.Qc4?
      • threat
        • 2.Qc3+
          • 2...Ke4
            • 3.Qe3#
          • 2...Kf4
            • 3.Qe3#
      • 1...cxb4
        • 2.Qh4
          • threat
            • 3.d4#
      • 1...Kf6!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qf5+
          • 2...Ke7
            • 3.Qf7#
          • 2...Kg7
            • 3.Qf7#
      • 1...Kxe4!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qc3+
          • 2...Ke4
            • 3.Qe3#
          • 2...Kf4
            • 3.Qe3#
      • 1...Kd4
        • 2.Qc3+
          • 2...Ke4
            • 3.Qe3#
      • 1...Kf6
        • 2.Qf5+
          • 2...Ke7
            • 3.Qf7#
          • 2...Kg7
            • 3.Qf7#
      • 1...cxb4
        • 2.Qh4
          • threat
            • 3.d4#

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).