Problem Display
PID: 29020 (N7/1N6/2r2p2/1Ppk1P2/2p2P2/4PK2/B4P2/8 w - - 0 1)

Macleod, Norman Alasdair

Chess World (The), 1950

N7/1N6/2r2p2/1Ppk1P2/2p2P2/4PK2/B4P2/8

#3

9 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...Ra6
      • 2.Sc7#
    • 1...Rb6
      • 2.Sxb6#
      • 2.Sc7#
    • 1...Rd6
      • 2.Sc7#
    • 1...Re6
      • 2.Sc7#
    • 1...Rc7
      • 2.Sb6#
      • 2.Sxc7#
    • 1...Rc8
      • 2.Sb6#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Kf3
          • 2...Ra6
            • 3.Sc7#
          • 2...Rb6
            • 3.Sxb6#
            • 3.Sc7#
          • 2...Rd6
            • 3.Sc7#
          • 2...Re6
            • 3.Sc7#
          • 2...Rc7
            • 3.Sb6#
            • 3.Sxc7#
          • 2...Rc8
            • 3.Sb6#
        • 2.f3
          • 2...Ra6
            • 3.Sc7#
          • 2...Rb6
            • 3.Sxb6#
            • 3.Sc7#
          • 2...Rd6
            • 3.Sc7#
          • 2...Re6
            • 3.Sc7#
          • 2...Rc7
            • 3.Sb6#
            • 3.Sxc7#
          • 2...Rc8
            • 3.Sb6#
      • 1...Ra6
        • 2.Sc7+
          • 2...Ke4
            • 3.Bb1#
      • 1...Rb6
        • 2.Sxb6+
          • 2...Ke4
            • 3.Sd6#
            • 3.Bb1#
        • 2.Sc7+
          • 2...Ke4
            • 3.Bb1#
      • 1...Rd6
        • 2.Sc7+
          • 2...Ke4
            • 3.Sxd6#
      • 1...Re6
        • 2.Sc7+
          • 2...Ke4
            • 3.Bb1#
      • 1...Rc7
        • 2.Sb6+
          • 2...Ke4
            • 3.Sd6#
            • 3.Bb1#
        • 2.Sxc7+
          • 2...Ke4
            • 3.Sd6#
            • 3.Bb1#
      • 1...Rc8
        • 2.Sb6+
          • 2...Ke4
            • 3.Sd6#
            • 3.Bb1#
      • 1...Ke4!
    • 1.Bb1?
      • threat
        • 2.Be4#
      • 1...Re6
        • 2.Sc7#
      • 1...c3!
    • 1.Bb3?
      • threat
        • 2.Ba2
          • 2...Ra6
            • 3.Sc7#
          • 2...Rb6
            • 3.Sxb6#
            • 3.Sc7#
          • 2...Rd6
            • 3.Sc7#
          • 2...Re6
            • 3.Sc7#
          • 2...Rc7
            • 3.Sb6#
            • 3.Sxc7#
          • 2...Rc8
            • 3.Sb6#
      • 1...Ra6
        • 2.Sc7#
      • 1...Rb6
        • 2.Sxb6#
        • 2.Sc7#
      • 1...Rd6
        • 2.Sc7#
      • 1...Re6
        • 2.Sc7#
      • 1...Rc7
        • 2.Sb6#
        • 2.Sxc7#
      • 1...Rc8
        • 2.Sb6#
      • 1...cxb3!
  • Keys
    • 1.Kg4!
      • threat
        • 2.Kf3
          • 2...Ra6
            • 3.Sc7#
          • 2...Rb6
            • 3.Sxb6#
            • 3.Sc7#
          • 2...Rd6
            • 3.Sc7#
          • 2...Re6
            • 3.Sc7#
          • 2...Rc7
            • 3.Sb6#
            • 3.Sxc7#
          • 2...Rc8
            • 3.Sb6#
        • 2.f3
          • 2...Ra6
            • 3.Sc7#
          • 2...Rb6
            • 3.Sxb6#
            • 3.Sc7#
          • 2...Rd6
            • 3.Sc7#
          • 2...Re6
            • 3.Sc7#
          • 2...Rc7
            • 3.Sb6#
            • 3.Sxc7#
          • 2...Rc8
            • 3.Sb6#
      • 1...Ke4
        • 2.Bxc4
          • 2...Ra6
            • 3.Sxc5#
          • 2...Rb6
            • 3.Sxc5#
          • 2...Rd6
            • 3.Sxc5#
            • 3.Sxd6#
          • 2...Re6
            • 3.Sxc5#
          • 2...Rc7
            • 3.Sd6#
          • 2...Rc8
            • 3.Sd6#
      • 1...Rd6
        • 2.Sc7+
          • 2...Ke4
            • 3.Sxc5#
      • 1...Ra6
        • 2.Sc7+
          • 2...Ke4
            • 3.Sxc5#
            • 3.Bb1#
      • 1...Rb6
        • 2.Sxb6+
          • 2...Ke4
            • 3.Sxc5#
            • 3.Bb1#
        • 2.Sc7+
          • 2...Ke4
            • 3.Sxc5#
            • 3.Bb1#
      • 1...Re6
        • 2.Sc7+
          • 2...Ke4
            • 3.Sxc5#
            • 3.Bb1#
      • 1...Rc7
        • 2.Sb6+
          • 2...Ke4
            • 3.Bb1#
        • 2.Sxc7+
          • 2...Ke4
            • 3.Sxc5#
            • 3.Bb1#
      • 1...Rc8
        • 2.Sb6+
          • 2...Ke4
            • 3.Bb1#

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).