MESON Chess Problem Database

Problem Display
PID: 141262 (1KR2N2/5p2/2Np1B2/3k1n2/5r2/8/8/4QB2 w - - 0 1)

Brooke, HL

BCPS, 1919

1KR2N2/5p2/2Np1B2/3k1n2/5r2/8/8/4QB2

#2

7 + 5

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qa5#
    • 1...Rxf1
      • 2.Sb4#
    • 1...Rf2
      • 2.Sb4#
    • 1...Rf3
      • 2.Sb4#
    • 1...Rb4+
      • 2.Sxb4#
    • 1...Re4
      • 2.Qa5#
    • 1...Sg3
      • 2.Se7#
    • 1...Sd4
      • 2.Sb4#
      • 2.Se7#
    • 1...Sh4
      • 2.Se7#
    • 1...Sh6
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...Sg7
      • 2.Se7#
  • Tries
    • 1.Qe6+?
      • 1...Kc5
        • 2.Sd7#
      • 1...fxe6!
  • Keys
    • 1.Qb1!
      • 1...Rb4+
        • 2.Sxb4#
      • 1...Kc5
        • 2.Se7#
        • 2.Qb5#
      • 1...Rxf1
        • 2.Sb4#
      • 1...Ra4
        • 2.Qxf5#
      • 1...Rf2
        • 2.Sb4#
      • 1...Rf3
        • 2.Sb4#
      • 1...Rc4
        • 2.Qxf5#
      • 1...Rd4
        • 2.Qxf5#
      • 1...Re4
        • 2.Qb5#
      • 1...Rg4
        • 2.Qxf5#
      • 1...Rh4
        • 2.Qxf5#
      • 1...Se3
        • 2.Se7#
      • 1...Sg3
        • 2.Se7#
      • 1...Sd4
        • 2.Sb4#
        • 2.Se7#
      • 1...Sh4
        • 2.Se7#
      • 1...Sh6
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...Sg7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
    • R(a);N_GUARD,XB(B)::S(C)
    • R(a);N_GUARD::S(C)
    • R(a);CHECK,N_GUARD::S(C),XR(a)
    • R(a);SBLOCK::QAR(A)
    • S(c);N_GUARD::S(C)
    • S(c);N_GUARD::S(C),XS(c)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(G)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • R(a);CHECK,N_GUARD::S(C),XR(a)
      • R(a);N_GUARD,XB(B)::S(C)
      • R(a);N_GUARD::QAR2(A),XS(c)
      • R(a);N_GUARD::S(C)
      • R(a);SBLOCK::QAR2(A)
      • S(c);N_GUARD::S(C)
      • S(c);N_GUARD::S(C),XS(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).