MESON Chess Problem Database

Problem Display
PID: 260083 (n3R1K1/8/3k4/3p4/8/2Q4B/8/8 w - - 0 1)

Zimmer, Eligiusz

Schweizerische Schachzeitung, 2005

n3R1K1/8/3k4/3p4/8/2Q4B/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Rxa8?
      • 1...Ke7
        • 2.Qe5#
      • 1...d4!
    • 1.Qb4+?
      • 1...Kc7
        • 2.Rc8#
      • 1...Kc6!
  • Keys
    • 1.Rc8!
      • threat
        • 2.Qf6#
      • 1...Ke7
        • 2.Qe5#
      • 1...d4
        • 2.Qc5#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);XS(c)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAR2(A)
      • P(a);::QAB1(A)
      • S(c);N_GUARD::QAB1(A),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).