MESON Chess Problem Database

Problem Display
PID: 51466 (8/5Q2/8/3R3p/2n4B/6K1/4p2N/4kqbR w - - 0 1)

Rice, John Michael

The Guardian, 1961

8/5Q2/8/3R3p/2n4B/6K1/4p2N/4kqbR

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2+
      • 2.Kxg2#
    • 1...Qh3+
      • 2.Kxh3#
    • 1...Qf2+
      • 2.Qxf2#
    • 1...Qf3+
      • 2.Kxf3#
    • 1...Qf4+
      • 2.Kxf4#
    • 1...Bf2+
      • 2.Qxf2#
    • 1...Bxh2+
      • 2.Kxh2#
    • 1...Be3
      • 2.Sf3#
    • 1...Bc5
      • 2.Sf3#
    • 1...Bb6
      • 2.Sf3#
    • 1...Ba7
      • 2.Sf3#
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qc1#
      • 1...Qg2+
        • 2.Kxg2#
      • 1...Qh3+
        • 2.Kxh3#
      • 1...Qf2+
        • 2.Qxf2#
      • 1...Qf3+
        • 2.Kxf3#
      • 1...Qxf4+
        • 2.Kxf4#
      • 1...Bf2+
        • 2.Qxf2#
      • 1...Bxh2+
        • 2.Kxh2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Be3
        • 2.Sf3#
      • 1...Sb2
        • 2.Qd2#
        • 2.Qb4#
      • 1...Se3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);CHECK,P_SPINB(c)::B(D)+K(C),XQ(b)
    • Q(b);CHECK,N_GUARD,P_SPINB(c)::QAB1(F),XQ(b)
    • B(c);CHECK,N_GUARD,P_SPINQ(b)::QAB1(F),XB(c)
    • B(c);CHECK,P_SPINQ(b),XS(B)::B(D)+K(C),XB(c)
    • B(c);P_SPINQ(b)::S(B)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • Q(b);CHECK,P_SPINB(c)::B(D)+K(C),XQ(b)
      • Q(b);CHECK,N_GUARD,P_SPINB(c)::QAB1(F),XQ(b)
      • Q(b);CHECK,P_SPINB(c),XQ(F)::B(D)+K(C),XQ(b)
      • B(c);CHECK,N_GUARD,P_SPINQ(b)::QAB1(F),XB(c)
      • B(c);CHECK,P_SPINQ(b),XS(B)::B(D)+K(C),XB(c)
      • S(e);N_GUARD::QAB1(F),XS(e)
      • B(c);P_SPINQ(b)::S(B)
      • S(e);OGATE::QAB(F)
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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).