MESON Chess Problem Database

Problem Display
PID: 162170 (N1n5/n1Q5/8/1kN5/8/1K6/8/8 w - - 0 1)

Rubens, Nathan

Pittsburgh Sun, 1925

(First published on Sat Sep 26 1925)

N1n5/n1Q5/8/1kN5/8/1K6/8/8

#3

4 + 3

14986 White-Hume Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sd6
      • 2.Qb6#
    • 1...Se7
      • 2.Qb6#
  • Tries
    • 1.Kc3?
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sd6
        • 2.Qb6#
      • 1...Se7
        • 2.Qb6#
      • 1...Sc6!
    • 1.Sd3?
      • threat
        • 2.Qc4+
          • 2...Ka5
            • 3.Qa4#
      • 1...Ka6
        • 2.Ka4
          • threat
            • 3.Sb4#
            • 3.Sc5#
          • 2...Sb6+
            • 3.Qxb6#
        • 2.Sb4+
          • 2...Kb5
            • 3.Qe5#
      • 1...Sc6!
    • 1.Se4?
      • threat
        • 2.Qc4+
          • 2...Ka5
            • 3.Qa4#
      • 1...Ka6
        • 2.Ka4
          • threat
            • 3.Sc5#
          • 2...Sb6+
            • 3.Qxb6#
      • 1...Sc6!
    • 1.Se6?
      • threat
        • 2.Qc4+
          • 2...Ka5
            • 3.Qa4#
      • 1...Ka6
        • 2.Ka4
          • threat
            • 3.Sc5#
          • 2...Sb6+
            • 3.Qxb6#
      • 1...Sc6!
    • 1.Sd7?
      • threat
        • 2.Qc4+
          • 2...Ka5
            • 3.Qa4#
      • 1...Ka6
        • 2.Ka4
          • threat
            • 3.Sc5#
            • 3.Sb8#
          • 2...Sb6+
            • 3.Qxb6#
        • 2.Sb8+
          • 2...Kb5
            • 3.Qe5#
      • 1...Sc6!
    • 1.Qb7+?
      • 1...Ka5
        • 2.Qa6#
        • 2.Qb4#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Kxc5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Qc4#
      • 1...Ka6
        • 2.Ka4
          • threat
            • 3.Sc5#
          • 2...Sb6+
            • 3.Qxb6#
      • 1...Sc6
        • 2.Qb6+
          • 2...Sxb6
            • 3.Sc7#

FEATURES

NOT CLASSIFIED
HTML5 logo

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).