MESON Chess Problem Database

Problem Display
PID: 2176 (8/6N1/N3p2K/4k3/3RPR2/4Q3/2P4p/7B w - - 0 1)

Cheney, George Nelson

Source?, 0000

8/6N1/N3p2K/4k3/3RPR2/4Q3/2P4p/7B

#2

9 + 3

1679 American Chess Nuts 1868
5656 Sammlung Leichterer Schachaufgaben I (Dufresne) 1881

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qd6#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kxf4!
  • Keys
    • 1.Qe1!
      • 1...Kxd4
        • 2.e5#
      • 1...Kxf4
        • 2.e5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
  • Actual
    • Q(C);
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(D)::R(F)+P(E)
      • K(b);OGATE,S_FLIGHT,XR(F)::R(D)+P(E)
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).