MESON Chess Problem Database

Problem Display
PID: 234541 (4k3/8/3PKP2/8/8/8/8/4B3 w - - 0 1)

Speckmann, Werner

Source?, 0000

4k3/8/3PKP2/8/8/8/8/4B3

#2

4 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.f7+?
      • 1...Kd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kf8!
  • Keys
    • 1.d7+!
      • 1...Kd8
        • 2.Ba5#
      • 1...Kf8
        • 2.d8Q#
        • 2.d8R#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);CHECK
    • Vars
      • K(a);P-FLIGHT::B(A)
      • K(a);P-FLIGHT::P=Q
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).