MESON Chess Problem Database

Problem Display
PID: 64698 (r3Nb2/P3PP2/BPkPK3/8/N7/8/8/8 w - - 0 1)

Pape, Edouard

Good Companions (January), 1922

r3Nb2/P3PP2/BPkPK3/8/N7/8/8/8

#2

9 + 3

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.axb8S#
    • 1...Rd8
      • 2.exd8S#
    • 1...Rxe8
      • 2.fxe8Q#
      • 2.fxe8B#
  • Keys
    • 1.b7!
      • threat
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Rxa7
        • 2.b8S#
      • 1...Rxe8
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Bxe7
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Rb8
        • 2.axb8S#
      • 1...Rc8
        • 2.bxc8Q#
        • 2.bxc8R#
      • 1...Rd8
        • 2.exd8S#
      • 1...Bh6
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Bg7
        • 2.bxa8Q#
        • 2.bxa8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::PXR(b)=S
    • R(b);OGATE,P_PINP(G),XS(I)::PXR(b)=Q
  • Actual
    • P(C);
    • Threat
      • PXR(b)=Q
    • Vars
      • R(b);N_GUARD,XP(F)::P=S
      • R(b);OGATE,P_PINP(G),XS(I)::PXR(b)=Q
      • B(c);XP(G)::PXR(b)=Q
      • R(b);OGATE::PXR(b)=S
      • R(b);OGATE::PXR(b)=Q
      • B(c);::PXR(b)=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).