MESON Chess Problem Database

Problem Display
PID: 57324 (4q1bQ/4rN2/2pP4/R4Pp1/2Bpk2b/3N3R/K4prp/2B2n2 w - - 0 1)

Sparke, Arthur M

Comm., Brisbane Courier, 1918-1919

4q1bQ/4rN2/2pP4/R4Pp1/2Bpk2b/3N3R/K4prp/2B2n2

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3
      • 2.Sxg5#
  • Tries
    • 1.Sxf2+?
      • 1...Bxf2
        • 2.Bd3#
      • 1...Rxf2+!
    • 1.Qxh4+?
      • 1...Rg4
        • 2.Sxf2#
        • 2.Sxg5#
        • 2.Qxg4#
      • 1...g4
        • 2.Sg5#
      • 1...gxh4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qf3#
      • 1...Rg3
        • 2.Sxf2#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Bg3
        • 2.Sxg5#
      • 1...Sd2
        • 2.Qe2#
      • 1...Sg3
        • 2.Qg4#
      • 1...g4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD,S_CUTR(c)::S(I),XP(h)
  • Tries
    • Try
      • S(C);CHECK,P_SPINS(C),XP(b)
      • Vars
        • B(g);XS(C)::B(E)
      • Refutation
        • R(c);CHECK,XS(C)
    • Try
      • Q(J);CHECK,XB(g)
      • Vars
        • P(h);P_SPINP(h)::S(I)
      • Refutation
        • P(h);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • R(c);N_GUARD,S_CUTB(g)::S(C),XP(b)
      • R(c);N_GUARD::QAR2(J),XR(c)
      • B(g);N_GUARD,S_CUTR(c)::S(I),XP(h)
      • S(a);N_GUARD::QAR2(J)
      • S(a);S_CUTR(c)::QAR2(J)
      • P(h);::S(C)
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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).