Problem Display
PID: 6994 (6B1/B1pp4/R2R3N/3Pk3/5p2/1K1P4/6N1/8 w - - 0 1)

Roscher, Willy

Magyar Sakkvilag Fleck TT, 1935-1936

6B1/B1pp4/R2R3N/3Pk3/5p2/1K1P4/6N1/8

#2

9 + 4


SOLUTION


  • SOUND
  • Tries
    • 1.Re6+?
      • 1...Kxd5
        • 2.Sxf4#
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re4#
        • 2.Re7#
        • 2.Re8#
      • 1...dxe6!
    • 1.Rf6?
      • threat
        • 2.Sg4#
        • 2.Rf5#
      • 1...c6
        • 2.Sg4#
      • 1...c5!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Sf3#
        • 2.Sg6#
        • 2.Sg4#
        • 2.Sf7#
      • 1...cxd6
        • 2.Sg4#
      • 1...f3
        • 2.Sg6#
      • 1...c5
        • 2.Sf3#
      • 1...c6
        • 2.Sf7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • P(d);XR(F)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::S(G)
      • Refutation
        • P(c);
  • Actual
    • S(A);
    • Threat
      • DUALS(4)
    • Vars
      • P(c);XR(F)::S(G)
      • P(a);::S(A)
      • P(c);::S(A)
      • P(c);::S(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).