Problem Display
PID: 64637 (3rQKB1/5P2/2RB4/3k1P2/8/1P1n1N2/8/8 w - - 0 1)

Bottacchi, Antonio

2nd Prize, Good Companions (March Meredith Ty.), 1920

3rQKB1/5P2/2RB4/3k1P2/8/1P1n1N2/8/8

#2

9 + 3


3132 The Good Companion Two-Mover 1922

SOLUTION


  • SOUND
  • Sets
    • 1...Rxe8+
      • 2.fxe8Q#
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rd4#
      • 1...Rxe8+
        • 2.fxe8S#
      • 1...Kxd6
        • 2.Qxd8#
      • 1...Rxd6
        • 2.Qe4#
      • 1...Rd7
        • 2.Qe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE,XQ(G)::PXR(c)=Q
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • R(c);CHECK,OGATE,XQ(G)::PXR(c)=S
      • K(b);P-FLIGHT,XB(E)::QAR2(G),XR(c)
      • R(c);N_PINQ(G),SBLOCK,XB(E)::QAB1(G)
      • R(c);N_PINQ(G)::QAB1(G)


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).