MESON Chess Problem Database

Problem Display
PID: 129787 (3Nk3/3pPp2/5P2/4b3/q3Q3/pp3p2/8/7K w - - 0 1)

Sindler, Ivan

Straz lidu, 1951

3Nk3/3pPp2/5P2/4b3/q3Q3/pp3p2/8/7K

#2

5 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qxa4#
    • 1...d6
      • 2.Qxa4#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qxf7#
      • 1...d5
        • 2.Qxa4#
      • 1...d6
        • 2.Qxa4#
      • 1...Qxc4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg7#
      • 1...Bxf6
        • 2.Sc7#
      • 1...dxe6
        • 2.Qxa4#
      • 1...fxe6
        • 2.Qg6#
      • 1...d5
        • 2.Qxa4#
      • 1...d6
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATEB::QAB(B),XQ(d)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(g)
      • Vars
        • P(f);OGATEB::QAB(B),XQ(d)
      • Refutation
        • Q(d);XQ(B)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • B(e);N_GUARD,XP(C)::S(E)
      • P(f);OGATEB,XS(E)::QAB(B),XQ(d)
      • P(g);OGATEB,XS(E)::QAB(B)
      • P(f);OGATEB::QAB(B),XQ(d)
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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).