Problem Display
PID: 24661 (6nq/1Q3p1p/1PP4p/3Pk2P/4P3/1P3PP1/p1p1K3/rbB5 w - - 0 1)

Ryan, RE

The Observer, 1937

(First published on Sun Feb 7 1937)

6nq/1Q3p1p/1PP4p/3Pk2P/4P3/1P3PP1/p1p1K3/rbB5

#3

11 + 10


15368 Ryan Scrapbook 2011
15239 Valois Notebooks 2019

SOLUTION


  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qe7+
        • 2...Kd4
          • 3.Bb2#
    • 1...Se7
      • 2.Qxe7+
        • 2...Kd4
          • 3.Bb2#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Bb2+
          • 2...Kd6
            • 3.Qa3#
      • 1...Kd4
        • 2.Qa3
          • threat
            • 3.Bb2#
          • 2...Kc3
            • 3.Bb2#
          • 2...Ke5
            • 3.Bb2#
      • 1...Kd6
        • 2.Qa3+
          • 2...Ke5
            • 3.Bb2#
      • 1...Kf6!
    • 1.Qa7?
      • threat
        • 2.Bb2+
          • 2...Kd6
            • 3.Qa3#
      • 1...Kd4
        • 2.Qa3
          • threat
            • 3.Bb2#
          • 2...Kc3
            • 3.Bb2#
          • 2...Ke5
            • 3.Bb2#
      • 1...Kd6
        • 2.Qa3+
          • 2...Ke5
            • 3.Bb2#
      • 1...Kf6!
    • 1.Qd7?
      • threat
        • 2.Bb2#
      • 1...Kf6
        • 2.Bb2+
          • 2...Kg5
            • 3.Qg4#
            • 3.Qf5#
      • 1...Kd4!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Bb2#
      • 1...Sxe7!
    • 1.Qb8+?
      • 1...Kf6
        • 2.Qf8
          • 2...Ke5
            • 3.Bb2#
          • 2...Qg7
            • 3.Qd6#
          • 2...Se7
            • 3.Qxh8#
      • 1...Kd4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Bb2+
          • 2...Kd6
            • 3.Qa3#
      • 1...Kd4
        • 2.Qa3
          • threat
            • 3.Bb2#
          • 2...Kc3
            • 3.Bb2#
          • 2...Ke5
            • 3.Bb2#
      • 1...Kd6
        • 2.Qa3+
          • 2...Ke5
            • 3.Bb2#
      • 1...Kf6
        • 2.Qf8
          • 2...Ke5
            • 3.Bb2#
          • 2...Qg7
            • 3.Qd6#
          • 2...Se7
            • 3.Qxh8#

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).