Problem Display
PID: 55677 (3nKB2/r1p5/4kb2/1p2N1P1/2P2PP1/1n2N3/1p6/4R3 w - - 0 1)

Mansfield, Comins

1st HM., Schach-Echo, 1977

3nKB2/r1p5/4kb2/1p2N1P1/2P2PP1/1n2N3/1p6/4R3

#2

9 + 8


4054 Complete Mansfield/III 1999

SOLUTION


  • SOUND
  • Sets
    • 1...Bxe5
      • 2.f5#
  • Tries
    • 1.Sc2?
      • threat
        • 2.f5#
      • 1...Bxg5
        • 2.Sd7#
      • 1...Be7
        • 2.Sf7#
      • 1...Sd4
        • 2.Sxd4#
      • 1...bxc4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.f5#
      • 1...Bxg5
        • 2.Sd5#
      • 1...Be7
        • 2.Sf5#
      • 1...Sd4
        • 2.Sc5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK,XS(F)::P(D)
  • Tries
    • Try
      • S(B);
      • Threat
        • P(D)
      • Vars
        • B(e);N_GUARD,XP(G)::R(A)+S(F)
        • B(e);N_GUARD::R(A)+S(F)
        • S(b);N_GUARD::S(B),XS(b)
      • Refutation
        • P(c);XP(C)
  • Actual
    • S(F);
    • Threat
      • P(D)
    • Vars
      • B(e);N_GUARD,XP(G)::R(A)+S(B)
      • B(e);N_GUARD::R(A)+S(B)
      • S(b);N_GUARD::S(F)


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).