MESON Chess Problem Database

Problem Display
PID: 19092 (5B2/qp5p/6N1/1p1p2P1/pr1k1p2/3Pp1r1/1P5Q/KN1R3b w - - 0 1)

Hirst, CA

Hampshire Post, 1912

5B2/qp5p/6N1/1p1p2P1/pr1k1p2/3Pp1r1/1P5Q/KN1R3b

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Bg7#
    • 1...Rg2
      • 2.Qxf4#
    • 1...Rxb2
      • 2.Qxb2#
    • 1...hxg6
      • 2.Qh8#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Bg7#
        • 2.Qc3#
      • 1...Rxg5
        • 2.Qc3#
      • 1...Qc5
        • 2.Bxc5#
        • 2.Bg7#
        • 2.Qxc5#
      • 1...Qb6
        • 2.Qc3#
      • 1...Qb8
        • 2.Bc5#
        • 2.Qc3#
        • 2.Qc5#
      • 1...Qa6
        • 2.Bc5#
        • 2.Qc3#
        • 2.Qc5#
      • 1...Rb3
        • 2.Bg7#
      • 1...Rc4
        • 2.dxc4#
      • 1...b6
        • 2.Qc3#
      • 1...e2!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sc2#
      • 1...Rxb2
        • 2.Qxb2#
      • 1...hxg6
        • 2.Qh8#
      • 1...Qc5
        • 2.Bg7#
      • 1...Rg2
        • 2.Qxf4#
      • 1...Rc4
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(j);SBLOCK::B(I)
    • R(c);OGATE::QAR2(E),XP(g)
    • R(e);OGATE,XP(D)::QAB(E),XR(e)
    • P(l);OGATE,XS(H)::QAB(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(G)::QAB1(E)
        • Q(j);::QAB1(E)
        • R(e);::B(I)
        • R(e);OGATE::R(C)+P(F),XR(e)
        • P(k);::QAB1(E)
      • Refutation
        • P(b);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • R(e);OGATE,XP(D)::QAB(E),XR(e)
      • P(l);OGATE,XS(H)::QAB(E)
      • Q(j);SBLOCK::B(I)
      • R(c);OGATE::QAR2(E),XP(g)
      • R(e);N_GUARD::S(B),XP(h)
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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).