MESON Chess Problem Database

Problem Display
PID: 67270 (7R/4K3/4B3/4k1p1/3pn3/4PP2/3p4/3Q4 w - - 0 1)

van Espen, Eddy

Het Belgisch Schaakbord (L'Echiquier Belge), 2006

7R/4K3/4B3/4k1p1/3pn3/4PP2/3p4/3Q4

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.f4#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qxe4#
      • 1...Sf2
        • 2.Qf5#
        • 2.Qc5#
        • 2.Qc7#
      • 1...Sc3
        • 2.Qf5#
      • 1...Sg3
        • 2.Qc5#
        • 2.Qc7#
      • 1...Sc5
        • 2.Qf5#
        • 2.Qxc5#
      • 1...Sd6
        • 2.Qc5#
      • 1...Sf6
        • 2.Qf5#
        • 2.Qc7#
      • 1...d3!
    • 1.Qb3?
      • threat
        • 2.Qd5#
      • 1...Sc3
        • 2.Qb8#
      • 1...Sf6
        • 2.Qb8#
      • 1...dxe3!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Rxe4#
      • 1...gxh4
        • 2.f4#
      • 1...Sf2
        • 2.exd4#
      • 1...Sc3
        • 2.exd4#
      • 1...Sg3
        • 2.exd4#
      • 1...Sc5
        • 2.exd4#
      • 1...Sd6
        • 2.exd4#
      • 1...Sf6
        • 2.exd4#
      • 1...g4
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::P(C)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XS(c)
      • Vars
        • S(c);OGATE::QAR1(A)
        • S(c);N_GUARD::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(c);N_GUARD::QAB(A)
      • Refutation
        • P(b);XP(B)
  • Actual
    • R(F);
    • Threat
      • R1(F),XS(c)
    • Vars
      • P(e);N_GUARD,XR(F)::P(C)
      • S(c);::P(B),XP(b)
      • P(e);N_GUARD::P(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).