MESON Chess Problem Database

Problem Display
PID: 265023 (rk1b4/NP2p3/1R2K3/2R5/8/8/8/8 w - - 0 1)

Usmanto, Fatchul

Die Schwalbe, 1971

rk1b4/NP2p3/1R2K3/2R5/8/8/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa7
      • 2.Rc8#
    • 1...Bc7
      • 2.Sc6#
  • Keys
    • 1.Rc7!
      • 1...Kxa7
        • 2.b8Q#
      • 1...Kxc7
        • 2.bxa8S#
      • 1...Rxa7
        • 2.Rc8#
      • 1...Bxc7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK,XS(D)::R1(A)
    • B(d);SBLOCK::S(D)
  • Actual
    • R(A);
    • Vars
      • K(c);OGATE,S_FLIGHT,XS(D)::P=Q
      • K(c);N_GUARD,S_FLIGHT,XR(A)::PXR(b)=S
      • R(b);SBLOCK,XS(D)::R1(A)
      • B(d);SBLOCK,XR(A)::S(D)
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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).