MESON Chess Problem Database

Problem Display
PID: 79218 (8/2R5/8/1r2k3/5RK1/6B1/B7/8 w - - 0 1)

von Alvensleben, Wichard Udo Reinhard

Deutsche Schachzeitung, 1986

8/2R5/8/1r2k3/5RK1/6B1/B7/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Rd4#
      • 2.Rf6#
  • Tries
    • 1.Rd4+?
      • 1...Kf6
        • 2.Rd6#
      • 1...Kxd4!
    • 1.Re4+?
      • 1...Kf6
        • 2.Re6#
      • 1...Kxe4!
    • 1.Rc6?
      • threat
        • 2.Ra4#
        • 2.Rb4#
        • 2.Re6#
      • 1...Rb4
        • 2.Rxb4#
        • 2.Re6#
      • 1...Rd5
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rfc4#
      • 1...Rb6
        • 2.Ra4#
        • 2.Rb4#
      • 1...Rb3!
  • Keys
    • 1.Rfc4+!
      • 1...Kd5
        • 2.Rb4#
      • 1...Ke6
        • 2.R4c6#
      • 1...Kf6
        • 2.R4c6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::R(C)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::R1(C)
      • Refutation
        • K(b);P-FLIGHT,XR(C)
    • Try
      • R(E);
      • Threat
        • DUALS(3)
      • Refutation
        • R(a);
  • Actual
    • R(C);CHECK
    • Vars
      • K(b);P-FLIGHT::B(A)+R(C)
      • K(b);P-FLIGHT::B(A)+R(C),DCHECK
      • K(b);S_FLIGHT::R(C)
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).