MESON Chess Problem Database

Problem Display
PID: 229179 (8/3p4/5N2/1b1Q1pp1/p4b1B/2K1kr1B/6nR/5n2 w - - 0 1)

Constable, BC

Brisbane Courier, 1926

8/3p4/5N2/1b1Q1pp1/p4b1B/2K1kr1B/6nR/5n2

#2

6 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be5+
      • 2.Qxe5#
    • 1...Be2
      • 2.Qd4#
      • 2.Qc5#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bc6
      • 2.Qd3#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sxh2
      • 2.Qd2#
    • 1...Sg3
      • 2.Qd2#
    • 1...Se1
      • 2.Qd4#
      • 2.Qc5#
    • 1...Sxh4
      • 2.Qd4#
      • 2.Qc5#
  • Tries
    • 1.Qe6+?
      • 1...Be5+
        • 2.Qxe5#
      • 1...dxe6!
  • Keys
    • 1.Bg4!
      • threat
        • 2.Qxf3#
      • 1...Ke2+
        • 2.Qxf3#
      • 1...Be5+
        • 2.Qxe5#
      • 1...Sxh2
        • 2.Qd2#
      • 1...Sxh4
        • 2.Qd4#
        • 2.Qc5#
      • 1...fxg4
        • 2.Qe4#
      • 1...Rf2
        • 2.Qd4#
        • 2.Qc5#
      • 1...Rg3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Rh3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Be2
        • 2.Qd4#
        • 2.Qc5#
      • 1...Bc6
        • 2.Qd3#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Se1
        • 2.Qd4#
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(f);CHECK,N_GUARD::QAR2(E),XB(f)
    • B(g);N_GUARD::QAR1(E),XB(g)
    • B(g);N_GUARD::QAR1(E)
    • S(a);N_GUARD::QAB1(E),XS(a)
    • S(a);N_GUARD,XR(A)::QAB1(E)
    • S(a);N_GUARD::QAB1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(f);CHECK,N_GUARD,P_SPINB(f)::QAR2(E),XB(f)
      • Refutation
        • P(j);XQ(E)
  • Actual
    • B(C);
    • Threat
      • QAR1(E),XR(d)
    • Vars
      • K(c);CHECK,P-FLIGHT,P_SPINR(d),P_SPINS(b)::QAB1(E),XR(d)
      • B(f);CHECK,N_GUARD::QAR2(E),XB(f)
      • S(a);N_GUARD,XR(A)::QAB1(E)
      • P(h);N_GUARD,XB(C)::QAR1(E)
      • B(g);N_GUARD::QAR1(E)
      • S(a);N_GUARD::QAB1(E),XS(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).