Problem Display
PID: 249477 (1N1Q4/pk2pr2/4p3/5p2/P7/5K2/8/8 w - - 0 1)

Kriuckov, Pavel

Uralski Problemist, 2000

1N1Q4/pk2pr2/4p3/5p2/P7/5K2/8/8

#3

4 + 6


SOLUTION


  • SOUND
  • Tries
    • 1.Qc7+?
      • 1...Ka8
        • 2.Sa6
          • threat
            • 3.Qb8#
            • 3.Qc6#
            • 3.Qc8#
        • 2.Sc6
          • threat
            • 3.Qb8#
            • 3.Qxa7#
            • 3.Qc8#
        • 2.Sd7
          • threat
            • 3.Qb8#
            • 3.Qc6#
            • 3.Qc8#
      • 1...Kxc7!
    • 1.Qd7+?
      • 1...Kb6
        • 2.Sa6
          • threat
            • 3.Qb5#
          • 2...Ka5
            • 3.Qb5#
          • 2...Kxa6
            • 3.Qb5#
        • 2.Qc6+
          • 2...Ka5
            • 3.Qb5#
      • 1...Ka8
        • 2.Sa6
          • threat
            • 3.Qc6#
            • 3.Qc8#
        • 2.Sc6
          • threat
            • 3.Qc8#
            • 3.Qxa7#
      • 1...Kxb8!
    • 1.Qc8+?
      • 1...Kb6
        • 2.Qc6+
          • 2...Ka5
            • 3.Qb5#
      • 1...Kxc8!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Qd7+
          • 2...Kxa6
            • 3.Qb5#
          • 2...Kb6
            • 3.Qb5#
          • 2...Ka8
            • 3.Qc6#
            • 3.Qc8#
      • 1...Kxa6
        • 2.Qb8
          • threat
            • 3.Qb5#
          • 2...Ka5
            • 3.Qb5#
      • 1...Kc6
        • 2.Qc7+
          • 2...Kd5
            • 3.Qc5#
      • 1...Rf8
        • 2.Qd7+
          • 2...Kxa6
            • 3.Qb5#
          • 2...Kb6
            • 3.Qb5#
          • 2...Ka8
            • 3.Qc6#
      • 1...e5
        • 2.Qd7+
          • 2...Kxa6
            • 3.Qb5#
          • 2...Kb6
            • 3.Qb5#
          • 2...Ka8
            • 3.Qc6#
            • 3.Qc8#
            • 3.Qd5#

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).