MESON Chess Problem Database

Problem Display
PID: 159605 (8/1N1R2K1/8/bp4P1/npk1pp2/1r6/PrPP3Q/7b w - - 0 1)

Anonymous

BCPJ (May), 1919

8/1N1R2K1/8/bp4P1/npk1pp2/1r6/PrPP3Q/7b

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sxa5#
  • Keys
    • 1.Qxf4!
      • threat
        • 2.Qf7#
      • 1...Rd3
        • 2.cxd3#
      • 1...Rf3
        • 2.Qxe4#
      • 1...Sc3
        • 2.d3#
      • 1...Sc5
        • 2.Sxa5#
      • 1...Sb6
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::S(F),XB(i)
  • Actual
    • Q(D);P_PINP(g),XP(h)
    • Threat
      • QAB(D)
    • Vars
      • R(c);OGATE::P(B),XR(c)
      • R(c);S_CUTB(a)::QAR2(D),XP(g)
      • S(d);SBLOCK,S_CUTR(c)::P(C)
      • S(d);SBLOCK::S(F),XB(i)
      • S(d);N_GUARD,S_CUTB(i)::QAR(D)
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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).