MESON Chess Problem Database

Problem Display
PID: 197748 (5Q2/7b/7N/3Rp3/4k2r/1B5p/K2pr2b/3N1nnq w - - 0 1)

Sparke, Arthur M

British Chess Magazine, 1918

5Q2/7b/7N/3Rp3/4k2r/1B5p/K2pr2b/3N1nnq

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Qb4#
    • 1...Re3
      • 2.Sf2#
    • 1...Bf5
      • 2.Qxf5#
    • 1...Bg8
      • 2.Qf5#
    • 1...Se3
      • 2.Sc3#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Bc2#
      • 1...Rf4
        • 2.Qa8#
      • 1...Bf4
        • 2.Qa8#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Re3
        • 2.Sf2#
      • 1...Bg8
        • 2.Qf5#
      • 1...Se3
        • 2.Sc3#
      • 1...Qf3!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Bc2#
      • 1...Rf4
        • 2.Qa8#
      • 1...Bf4
        • 2.Qa8#
      • 1...Bf5
        • 2.Qxf5#
      • 1...Qf3
        • 2.Qb4#
      • 1...Re3
        • 2.Sf2#
      • 1...Bg8
        • 2.Qf5#
      • 1...Se3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(c);SBLOCK::QAR(F)
    • R(e);N_GUARD,SBLOCK::S(A)
    • B(k);N_GUARD::QAB1(F),XB(k)
    • B(k);N_GUARD::QAB1(F)
    • S(a);SBLOCK::S(A)
  • Tries
    • Try
      • R(D);
      • Threat
        • B(C)
      • Vars
        • R(i);SBLOCK::QAB(F)
        • B(f);SBLOCK::QAB(F)
        • B(k);N_GUARD::QAB1(F),XB(k)
        • R(e);N_GUARD,SBLOCK::S(A)
        • B(k);N_GUARD,P_PINB(C)::QAB1(F)
        • S(a);SBLOCK::S(A)
      • Refutation
        • Q(c);
  • Actual
    • R(D);
    • Threat
      • B(C)
    • Vars
      • R(i);SBLOCK::QAB(F)
      • B(f);SBLOCK::QAB(F)
      • B(k);N_GUARD::QAB1(F),XB(k)
      • Q(c);SBLOCK::QAR(F)
      • R(e);N_GUARD,SBLOCK::S(A)
      • B(k);N_GUARD,P_PINB(C)::QAB1(F)
      • S(a);SBLOCK::S(A)
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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).