Problem Display
PID: 266597 (8/5RN1/3k4/8/8/8/4K3/7Q w - - 0 1)

Shmatov, Vladimir Afanasievich

Zadachi i Etyudi, 2011

8/5RN1/3k4/8/8/8/4K3/7Q

#3

4 + 1


SOLUTION


  • SOUND
  • Tries
    • 1.Kd3?
      • threat
        • 2.Kc4
          • 2...Ke5
            • 3.Qd5#
      • 1...Ke5
        • 2.Kc4
          • 2...Kd6
            • 3.Qd5#
        • 2.Qh6
          • 2...Kd5
            • 3.Rf5#
      • 1...Kc5!
    • 1.Rf5?
      • 1...Kd7
        • 2.Qb7+
          • 2...Kd6
            • 3.Rd5#
          • 2...Kd8
            • 3.Rd5#
            • 3.Rf8#
      • 1...Ke7
        • 2.Qb7+
          • 2...Kd6
            • 3.Rd5#
          • 2...Kd8
            • 3.Rd5#
            • 3.Rf8#
      • 1...Kc7!
    • 1.Rb7?
      • 1...Kc5
        • 2.Sf5
          • 2...Kc4
            • 3.Qc6#
      • 1...Ke5!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Rf5+
          • 2...Kd4
            • 3.Se6#
      • 1...Kxc6!
    • 1.Qc1?
      • 1...Ke5
        • 2.Qd2
          • 2...Ke4
            • 3.Re7#
      • 1...Kd5!
  • Keys
    • 1.Qb7!
      • 1...Kc5
        • 2.Sf5
          • 2...Kc4
            • 3.Rc7#
      • 1...Ke5
        • 2.Rf5+
          • 2...Kd4
            • 3.Qb4#
          • 2...Kd6
            • 3.Rd5#

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).