MESON Chess Problem Database

Problem Display
PID: 57141 (4K3/4P3/1p3N1P/1P2k1p1/3N1qR1/Q3pRp1/4P1P1/1B6 w - - 0 1)

Clark, WA

5th HM., Brisbane Courier, 1917

4K3/4P3/1p3N1P/1P2k1p1/3N1qR1/Q3pRp1/4P1P1/1B6

#2

12 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qd6#
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qf5
      • 2.Rxf5#
  • Tries
    • 1.Sc6+?
      • 1...Kxf6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Sd7+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kd5!
    • 1.Qc5+?
      • 1...Kxf6
        • 2.Qd6#
        • 2.Qxg5#
      • 1...bxc5!
  • Keys
    • 1.Ba2!
      • 1...Kxd4
        • 2.Qxe3#
      • 1...Kxf6
        • 2.Qd6#
      • 1...Qxf3
        • 2.Sd7#
      • 1...Qxd4
        • 2.Rxg5#
      • 1...Qxg4
        • 2.Sc6#
      • 1...Qxf6
        • 2.Rxe3#
      • 1...Qe4
        • 2.Rxe4#
      • 1...Qf5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINQ(c),S_FLIGHT,XS(I)::QAR2(D)
    • Q(c);OGATE::R1(G),XQ(c)
    • Q(c);OGATE::R1(E),XQ(c)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P_SPINQ(c),S_FLIGHT,XS(I)::QAR2(D)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(d);P_SPINQ(c),S_FLIGHT,XS(F)::QAR1(D)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • P(f);XQ(D)
  • Actual
    • B(A);
    • Vars
      • K(d);P_SPINQ(c),S_FLIGHT,XS(F)::QAB1(D),XP(a)
      • K(d);P_SPINQ(c),S_FLIGHT,XS(I)::QAR2(D)
      • Q(c);XR(E)::S(I)
      • Q(c);N_GUARD,SBLOCK,XS(F)::R(G),XP(e)
      • Q(c);XR(G)::S(F)
      • Q(c);N_GUARD,SBLOCK,XS(I)::R(E),XP(a)
      • Q(c);OGATE::R1(G),XQ(c)
      • Q(c);OGATE::R1(E),XQ(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).