Problem Display
PID: 223752 (2Q5/8/8/kP5R/8/6K1/8/8 w - - 0 1)

Jahn, Gunther

Deutsche Schachzeitung, 1971

2Q5/8/8/kP5R/8/6K1/8/8

#3

4 + 1


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Kb6
      • 2.Qd8+
        • 2...Ka7
          • 3.Rh7#
        • 2...Kb7
          • 3.Rh7#
  • Tries
    • 1.Qa8+?
      • 1...Kb6
        • 2.Qd8+
          • 2...Ka7
            • 3.Rh7#
          • 2...Kb7
            • 3.Rh7#
      • 1...Kb4!
    • 1.Qf8?
      • 1...Kb6
        • 2.Qd8+
          • 2...Ka7
            • 3.Rh7#
          • 2...Kb7
            • 3.Rh7#
      • 1...Ka4!
  • Keys
    • 1.Rh1!
      • 1...Ka4
        • 2.Rb1
          • threat
            • 3.Qa6#
            • 3.Qa8#
          • 2...Ka3
            • 3.Qa6#
            • 3.Qa8#
          • 2...Ka5
            • 3.Qa6#
      • 1...Kb4
        • 2.Rb1+
          • 2...Ka3
            • 3.Qa6#
            • 3.Qa8#
          • 2...Ka4
            • 3.Qa6#
            • 3.Qa8#
          • 2...Ka5
            • 3.Qa6#
      • 1...Kxb5
        • 2.Rb1+
          • 2...Ka4
            • 3.Qa6#
            • 3.Qa8#
          • 2...Ka5
            • 3.Qa8#
      • 1...Kb6
        • 2.Rb1
          • 2...Ka5
            • 3.Qa6#
          • 2...Ka7
            • 3.b6#

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).