Problem Display
PID: 228257 (8/3p4/7p/2pN4/k1PPQ3/1bPN4/1K2P1pq/8 w - - 0 1)

Howard, David M

Problem Observer, 2019

8/3p4/7p/2pN4/k1PPQ3/1bPN4/1K2P1pq/8

#3

8 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...d6
      • 2.Qe8+
        • 2...Ka5
          • 3.Qb5#
          • 3.Qa8#
  • Tries
    • 1.S5b4?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8+
          • 2...Kb6
            • 3.Sd5#
      • 1...Bxc4
        • 2.Qa8+
          • 2...Kb5
            • 3.Qa6#
          • 2...Ba6
            • 3.Qxa6#
      • 1...Qd6
        • 2.Qa8+
          • 2...Qa6
            • 3.Qxa6#
      • 1...Qc7
        • 2.Qa8+
          • 2...Qa5
            • 3.Sxc5#
          • 2...Qa7
            • 3.Qxa7#
      • 1...d5
        • 2.Qe8+
          • 2...Ka5
            • 3.Qb5#
      • 1...Qb8!
    • 1.S5f4?
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8+
          • 2...Kb6
            • 3.Sd5#
      • 1...d5
        • 2.Qe8+
          • 2...Ka5
            • 3.Qb5#
      • 1...Bxc4!
    • 1.Qg6?
      • threat
        • 2.Qa6#
      • 1...Ka5
        • 2.Qb6+
          • 2...Ka4
            • 3.Sxc5#
            • 3.Qa7#
            • 3.Qb5#
            • 3.Qa6#
      • 1...Bxc4
        • 2.Sxc5+
          • 2...Ka5
            • 3.Qb6#
          • 2...Kb5
            • 3.Qa6#
            • 3.Qb6#
      • 1...Qc7
        • 2.Qa6+
          • 2...Qa5
            • 3.Sxc5#
            • 3.Sb6#
      • 1...d6
        • 2.Qe8+
          • 2...Ka5
            • 3.Qb5#
            • 3.Qa8#
      • 1...Qd6!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa8+
          • 2...Kb6
            • 3.Sd5#
      • 1...Qxc7
        • 2.Qa8+
          • 2...Qa5
            • 3.Sxc5#
          • 2...Qa7
            • 3.Qxa7#
      • 1...Bxc4
        • 2.Qa8+
          • 2...Ba6
            • 3.Qxa6#
      • 1...Qd6
        • 2.Qa8+
          • 2...Qa6
            • 3.Qxa6#
      • 1...d5
        • 2.Qe8+
          • 2...Ka5
            • 3.Qb5#

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).