Problem Display
PID: 135553 (n7/7Q/pk6/Np6/8/1K6/8/8 w - - 0 1)

Zimmer, Eligiusz

StrateGems, 2009

n7/7Q/pk6/Np6/8/1K6/8/8

#3

3 + 4


SOLUTION


  • SOUND
  • Tries
    • 1.Qa7+?
      • 1...Kxa5
        • 2.Qc5
          • 2...Sb6
            • 3.Qb4#
          • 2...Sc7
            • 3.Qxc7#
      • 1...Kxa7!
    • 1.Qd7?
      • threat
        • 2.Kb4
          • 2...Sc7
            • 3.Qd4#
      • 1...Kxa5
        • 2.Qd6
          • 2...b4
            • 3.Qxb4#
            • 3.Qc5#
          • 2...Sb6
            • 3.Qb4#
          • 2...Sc7
            • 3.Qxc7#
      • 1...Sc7
        • 2.Qc6+
          • 2...Kxa5
            • 3.Qxc7#
          • 2...Ka7
            • 3.Qb7#
      • 1...b4
        • 2.Kxb4
          • 2...Sc7
            • 3.Qd4#
        • 2.Qc6+
          • 2...Kxa5
            • 3.Qc5#
          • 2...Ka7
            • 3.Qb7#
      • 1...Kc5!
    • 1.Qe7?
      • threat
        • 2.Kb4
          • 2...Sc7
            • 3.Qc5#
            • 3.Qe3#
      • 1...Kxa5
        • 2.Qc5
          • 2...Sb6
            • 3.Qb4#
          • 2...Sc7
            • 3.Qxc7#
        • 2.Qd6
          • 2...b4
            • 3.Qxb4#
            • 3.Qc5#
          • 2...Sb6
            • 3.Qb4#
          • 2...Sc7
            • 3.Qxc7#
      • 1...b4
        • 2.Kxb4
          • 2...Sc7
            • 3.Qc5#
            • 3.Qe3#
        • 2.Kc4
          • threat
            • 3.Qc5#
          • 2...Kxa5
            • 3.Qxb4#
      • 1...Sc7!
  • Keys
    • 1.Qc2!
      • 1...Kxa5
        • 2.Qc5
          • 2...Sb6
            • 3.Qb4#
          • 2...Sc7
            • 3.Qxc7#
      • 1...Ka7
        • 2.Qc6
          • threat
            • 3.Qb7#
          • 2...Kb8
            • 3.Qb7#
      • 1...b4
        • 2.Qc6+
          • 2...Kxa5
            • 3.Qc5#
          • 2...Ka7
            • 3.Qb7#
      • 1...Sc7
        • 2.Qc6+
          • 2...Kxa5
            • 3.Qxc7#
          • 2...Ka7
            • 3.Qb7#

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).