MESON Chess Problem Database

Problem Display
PID: 2887 (8/8/2n1n1p1/1N1k1Np1/b5p1/BP3PP1/2P1P3/3K4 w - - 0 1)

Keeble, John Frederick

Source?, 1902

8/8/2n1n1p1/1N1k1Np1/b5p1/BP3PP1/2P1P3/3K4

#2

9 + 7

2794 Terms & Themes of Chess Problems 1907
14665 Knights and Bishops 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Se7#
  • Keys
    • 1.Bd6!
      • threat
        • 2.Sc3#
        • 2.Se3#
        • 2.c4#
        • 2.e4#
      • 1...Bxb3
        • 2.Se3#
      • 1...Bxb5
        • 2.e4#
      • 1...gxf3
        • 2.Sc3#
      • 1...gxf5
        • 2.c4#
      • 1...Sb4
        • 2.Se7#
      • 1...Scd4
        • 2.Se7#
      • 1...Sa5
        • 2.Se7#
      • 1...Se5
        • 2.Se7#
      • 1...Sa7
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...Sb8
        • 2.Se7#
      • 1...Scd8
        • 2.Se7#
      • 1...Sed4
        • 2.Sc7#
      • 1...Sf4
        • 2.Sc7#
      • 1...Sc5
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sc7#
      • 1...Sed8
        • 2.Sc7#
      • 1...Sf8
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 18
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD,SBLOCK::S(I)
  • Actual
    • B(D);
    • Threat
      • DUALS(4)
    • Vars
      • B(a);P_PINP(B),XP(E)::S(I)
      • B(a);XS(H)::P(C)
      • P(b);XP(F)::S(H)
      • P(g);XS(I)::P(B)
      • S(e);N_GUARD::S(I)
      • S(e);N_GUARD::S(I),XS(e)
      • S(f);N_GUARD::S(H)
      • S(f);N_GUARD::S(H),XS(f)
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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).