MESON Chess Problem Database

Problem Display
PID: 270585 (2Q5/3p1r2/1PNp4/1nPk2N1/3P4/1P3p2/n4B2/4K3 w - - 0 1)

Westbury, Eric Ernest

Reading Observer, 1900

2Q5/3p1r2/1PNp4/1nPk2N1/3P4/1P3p2/n4B2/4K3

#2

9 + 7

17417 Westbury Scrapbooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Se7#
    • 1...Rf5
      • 2.Se7#
    • 1...Rf6
      • 2.Se7#
    • 1...Re7+
      • 2.Sxe7#
    • 1...Rf8
      • 2.Se7#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sac3
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...dxc6
      • 2.Qe6#
  • Keys
    • 1.Qf8!
      • 1...Re7+
        • 2.Sxe7#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Rxf8
        • 2.Se7#
      • 1...Sxd4
        • 2.Qxd6#
      • 1...dxc5
        • 2.Qxc5#
      • 1...dxc6
        • 2.Qxf7#
      • 1...Rf4
        • 2.Se7#
      • 1...Rf5
        • 2.Se7#
      • 1...Rf6
        • 2.Se7#
      • 1...Rg7
        • 2.Qxf3#
      • 1...Rh7
        • 2.Qxf3#
      • 1...Sc1
        • 2.Sb4#
      • 1...Sac3
        • 2.Sb4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sa3
        • 2.Qxd6#
      • 1...Sbc3
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD::S(H)
    • R(g);CHECK,N_GUARD::S(H),XR(g)
    • S(a);N_GUARD::S(H)
    • S(a);N_GUARD::S(H),XS(a)
    • P(f);OGATE,SBLOCK,XS(H)::QAB1(I)
  • Actual
    • Q(I);
    • Vars
      • R(g);CHECK,N_GUARD::S(H),XR(g)
      • K(d);OGATEB,S_FLIGHT,XS(H)::QAB(I)
      • R(g);N_GUARD,XQ(I)::S(H)
      • S(c);N_GUARD,XP(D)::QAR1(I),XP(e)
      • P(e);OGATE,XP(E)::QAR1(I),XP(e)
      • P(f);SBLOCK,XS(H)::QAB(I),XR(g)
      • R(g);N_GUARD::S(H)
      • R(g);OGATE::QAB(I),XP(b)
      • S(a);N_GUARD::S(H)
      • S(a);N_GUARD::S(H),XS(a)
      • S(c);N_GUARD::QAR1(I),XP(e)
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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).