Problem Display
PID: 183055 (8/3Q4/8/7p/1pp5/1Pk5/3R4/7K w - - 0 1)

Herland, Sigmund

Bulletin Ouvrier des Echecs, 1953

8/3Q4/8/7p/1pp5/1Pk5/3R4/7K

#3

4 + 4


SOLUTION


  • SOUND
  • Sets
    • 1...cxb3
      • 2.Qd3#
      • 2.Qd4#
  • Tries
    • 1.Rb2?
      • threat
        • 2.Qd2#
      • 1...cxb3
        • 2.Rd2
          • threat
            • 3.Qd3#
            • 3.Qd4#
          • 2...Kc4
            • 3.Qc6#
      • 1...Kxb2!
    • 1.Qf5?
      • threat
        • 2.Qc2#
      • 1...Kxb3
        • 2.Qc2+
          • 2...Ka3
            • 3.Qa2#
      • 1...Kxd2!
    • 1.Qa7?
      • threat
        • 2.Qe3#
      • 1...Kxb3
        • 2.Qa2+
          • 2...Kc3
            • 3.Qb2#
            • 3.Qc2#
      • 1...Kxd2!
    • 1.Qh7?
      • threat
        • 2.Qc2#
      • 1...Kxb3
        • 2.Qc2+
          • 2...Ka3
            • 3.Qa2#
      • 1...Kxd2!
    • 1.bxc4?
      • threat
        • 2.Qd3#
      • 1...Kb3
        • 2.Qd3+
          • 2...Ka4
            • 3.Ra2#
      • 1...Kxc4
        • 2.Qd5+
          • 2...Kc3
            • 3.Qd3#
      • 1...b3!
  • Keys
    • 1.Ra2!
      • threat
        • 2.Qd2+
          • 2...Kxb3
            • 3.Qb2#
            • 3.Qc2#
      • 1...Kxb3
        • 2.Qd2
          • threat
            • 3.Qb2#
            • 3.Qc2#
          • 2...c3
            • 3.Qd5#
      • 1...cxb3
        • 2.Rd2
          • threat
            • 3.Qd3#
            • 3.Qd4#
          • 2...Kc4
            • 3.Qc6#

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).