MESON Chess Problem Database

Problem Display
PID: 205631 (2R5/3p4/pQ1pp2q/K2kb2R/4n2r/1p1p1r2/8/3N3B w - - 0 1)

Klebes, Stefan

Badische Neueste Nachrichten, 1987

2R5/3p4/pQ1pp2q/K2kb2R/4n2r/1p1p1r2/8/3N3B

#2

6 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Sc3#
    • 1...Rf2
      • 2.Sc3#
    • 1...Re3
      • 2.Sc3#
    • 1...Rg3
      • 2.Sc3#
    • 1...Rfh3
      • 2.Sc3#
    • 1...Rff4
      • 2.Sc3#
      • 2.Se3#
    • 1...Rf6
      • 2.Sc3#
    • 1...Rf7
      • 2.Sc3#
    • 1...Rf8
      • 2.Sc3#
    • 1...Sd2
      • 2.Sc3#
    • 1...Sf2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sf6
      • 2.Sc3#
  • Tries
    • 1.Qc6+?
      • 1...Kd4
        • 2.Qc4#
      • 1...dxc6!
  • Keys
    • 1.Qxb3+!
      • 1...Kd4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • R(c);P_SPINS(d)::S(A)
    • S(d);N_GUARD,P_SPINR(c)::S(A)
    • S(d);N_GUARD,P_SPINR(c)::S(A),XS(d)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(f);N_SPINB(g),P-FLIGHT::QAR1(E)
      • Refutation
        • P(l);XQ(E)
  • Actual
    • Q(E);CHECK,XP(a)
    • Vars
      • K(f);N_SPINB(g),P-FLIGHT::QAR1(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).