MESON Chess Problem Database

Problem Display
PID: 71453 (3Q4/3p4/3r1n2/1p1k4/3N4/3K4/8/2RNR3 w - - 0 1)

Dalla Rosa, Pedro

Faria, Oswaldo

Gaspar, Byron

Il Due Mosse, 1960

3Q4/3p4/3r1n2/1p1k4/3N4/3K4/8/2RNR3

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sh5
      • 2.Qg5#
    • 1...Se8
      • 2.Qg5#
    • 1...Sg8
      • 2.Qg5#
    • 1...b4
      • 2.Qa5#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Sc3#
        • 2.Rc5#
        • 2.Qc5#
      • 1...Rc6
        • 2.Se3#
        • 2.Re5#
        • 2.Qe5#
      • 1...b4
        • 2.Rc5#
        • 2.Qa5#
        • 2.Qc4#
        • 2.Qc5#
      • 1...Se4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Se3#
        • 2.Re5#
        • 2.Qe5#
      • 1...Re6
        • 2.Sc3#
        • 2.Rc5#
        • 2.Qc5#
      • 1...Se4
        • 2.Se3#
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(d);OGATE::QAR(F)
    • P(a);OGATEB::QAR(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Refutation
        • S(d);
  • Actual
    • Q(F);
    • Threat
      • DUALS(3)
    • Vars
      • S(d);N_GUARD::QAB1(F)
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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).