MESON Chess Problem Database

Problem Display
PID: 132762 (1B6/2PPNPK1/4kP2/8/8/8/8/8 w - - 0 1)

Courtenay, Edward H

Chess Journal, 1870

1B6/2PPNPK1/4kP2/8/8/8/8/8

#2

7 + 1

1829 The Theory of Pawn Promotion 1912

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd7
      • 2.c8Q#
  • Tries
    • 1.d8S+?
      • 1...Kd6
        • 2.c8Q#
      • 1...Kd7
        • 2.c8Q#
      • 1...Ke5!
    • 1.d8B?
      • threat
        • 2.c8Q#
        • 2.c8B#
      • 1...Kd6
        • 2.c8Q#
      • 1...Kd7
        • 2.c8Q#
      • 1...Ke5!
    • 1.f8S+?
      • 1...Kd6
        • 2.c8Q#
        • 2.c8R#
      • 1...Ke5!
  • Keys
    • 1.c8R!
      • 1...Kxd7
        • 2.f8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(C)::P=Q
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(C);
      • Threat
        • P=Q
      • Vars
        • K(a);P-FLIGHT::P=Q
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT,XP(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).