Problem Display
PID: 73106 (1bqn4/n1p2B1p/2r1PN1P/1P6/2kP3R/p4KRp/3Q2Pr/N5B1 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

3rd Prize, 64 Shakhmatnoe obozrenie, 1981

1bqn4/n1p2B1p/2r1PN1P/1P6/2kP3R/p4KRp/3Q2Pr/N5B1

#3

13 + 11


3752 FIDE Album (1980-1982) 1988

SOLUTION


  • SOUND
  • Sets
    • 1...Qa6
      • 2.d5+
        • 2...Kxb5
          • 3.Qb4#
    • 1...Ra6
      • 2.d5+
        • 2...Kxb5
          • 3.Qb4#
  • Tries
    • 1.Qb4+?
      • 1...Kd3
        • 2.Kf2#
      • 1...Kxb4!
    • 1.Qb2?
      • threat
        • 2.Qb3#
      • 1...Kd3
        • 2.Kf2+
          • 2...Kc4
            • 3.Rc3#
            • 3.Qb3#
        • 2.Kf4+
          • 2...Kc4
            • 3.Rc3#
            • 3.Qb3#
        • 2.Kg4+
          • 2...Kc4
            • 3.Rc3#
            • 3.Qb3#
        • 2.Qe2+
          • 2...Kc3
            • 3.Sd5#
      • 1...axb2!
    • 1.Qe2+?
      • 1...Kc3
        • 2.Sd5#
      • 1...Kb4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.d5+
          • 2...Kd3
            • 3.Kf2#
            • 3.Rd4#
      • 1...Kd3
        • 2.Kf2+
          • 2...Kc4
            • 3.Rc3#
            • 3.Qa4#
        • 2.d5
          • threat
            • 3.Kf2#
            • 3.Rd4#
      • 1...Qxe6
        • 2.Kf4
          • threat
            • 3.Rc3#
            • 3.Qa4#
      • 1...Rxg2
        • 2.d5+
          • 2...Kd3
            • 3.Rd4#
      • 1...Rxe6
        • 2.Kg4
          • threat
            • 3.Rc3#
            • 3.Qa4#
      • 1...Sxb5
        • 2.d5+
          • 2...Kd3
            • 3.Kf2#
          • 2...Sd4+
            • 3.Rxd4#
      • 1...Sxe6
        • 2.Ke4
          • threat
            • 3.Rc3#
            • 3.Qa4#
      • 1...hxg2
        • 2.Kf2
          • threat
            • 3.Rc3#
            • 3.Qa4#

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).