MESON Chess Problem Database

Problem Display
PID: 265078 (2N4Q/3kn3/8/B5N1/K7/8/8/8 w - - 0 1)

Zimmer, Eligiusz

Schweizerische Schachzeitung, 2013

2N4Q/3kn3/8/B5N1/K7/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Qd8#
      • 1...Kxe7
        • 2.Qd8#
      • 1...Kd6!
    • 1.Qf6?
      • 1...Ke8
        • 2.Qxe7#
      • 1...Sxc8
        • 2.Qe6#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sf5
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Sg6
        • 2.Qe6#
      • 1...Sg8
        • 2.Qe6#
      • 1...Kxc8!
  • Keys
    • 1.Qe5!
      • 1...Kc6
        • 2.Qb5#
      • 1...Kxc8
        • 2.Qc7#
      • 1...Ke8
        • 2.Qxe7#
      • 1...Sxc8
        • 2.Qe6#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sf5
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Sg6
        • 2.Qe6#
      • 1...Sg8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XS(b)
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(E),XS(b)
        • S(b);SBLOCK,XS(D)::QAB1(E)
        • S(b);::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • Q(E);
    • Vars
      • K(a);N_GUARD,S_CUTS(b),S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT,XS(D)::QAR1(E)
      • K(a);N_GUARD,P_SPINS(b),S_FLIGHT::QAR1(E),XS(b)
      • S(b);SBLOCK,XS(D)::QAB1(E)
      • S(b);::QAB1(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).