MESON Chess Problem Database

Problem Display
PID: 2172 (4N3/2PBk1P1/1P3N1K/8/3P4/8/8/8 w - - 0 1)

Cheney, George Nelson

Source?, 1858

4N3/2PBk1P1/1P3N1K/8/3P4/8/8/8

#2

8 + 1

1679 American Chess Nuts 1868
1829 The Theory of Pawn Promotion 1912

SOLUTION

  • SOUND
  • Tries
    • 1.c8S+?
      • 1...Kf7
        • 2.g8Q#
      • 1...Kd8!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.c8S#
      • 1...Kxf6
        • 2.g8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(H);
    • Vars
      • K(a);S_FLIGHT,XS(H)::P=S
      • K(a);S_FLIGHT,XS(C)::P=S
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).