Problem Display
PID: 186793 (4N3/8/1p1p4/2k5/2P1Q3/3K4/8/8 w - - 0 1)

Atamanova, Margarita

Kozhakin, Vladimir Vladimirovich

Best Problems, 2019

4N3/8/1p1p4/2k5/2P1Q3/3K4/8/8

#3

4 + 3


SOLUTION


  • SOUND
  • Sets
    • 1...d5
      • 2.Qe7+
        • 2...Kc6
          • 3.Qc7#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...b5!
    • 1.Qb7?
      • threat
        • 2.Kc3
          • threat
            • 3.Qd5#
            • 3.Qc8#
            • 3.Qc7#
      • 1...d5
        • 2.Qe7+
          • 2...Kc6
            • 3.Qc7#
      • 1...Kb4!
    • 1.Qa8?
      • threat
        • 2.Qa4
          • threat
            • 3.Qb5#
          • 2...b5
            • 3.Qxb5#
      • 1...b5
        • 2.Qa5
          • threat
            • 3.Qxb5#
          • 2...Kc6
            • 3.Qc7#
            • 3.Qxb5#
      • 1...d5
        • 2.Qa4
          • threat
            • 3.Qb5#
          • 2...dxc4+
            • 3.Qxc4#
          • 2...b5
            • 3.Qxb5#
      • 1...Kb4!
    • 1.Qe3+?
      • 1...Kc6
        • 2.Qe7
          • threat
            • 3.Qc7#
          • 2...Kc5
            • 3.Qxd6#
      • 1...Kb4!
    • 1.Qe6?
      • threat
        • 2.Qxd6#
      • 1...Kc6
        • 2.Qc8#
      • 1...d5
        • 2.Qd6#
      • 1...Kb4!
    • 1.Qe7?
      • threat
        • 2.Qxd6#
      • 1...Kc6
        • 2.Qc7#
      • 1...Kb4!
  • Keys
    • 1.Qe1!
      • 1...Kc6
        • 2.Qe7
          • threat
            • 3.Qc7#
          • 2...Kc5
            • 3.Qxd6#
      • 1...b5
        • 2.Qa5
          • threat
            • 3.Qxb5#
          • 2...Kc6
            • 3.Qc7#
            • 3.Qxb5#
      • 1...d5
        • 2.Qe7+
          • 2...Kc6
            • 3.Qc7#

FEATURES


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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).