MESON Chess Problem Database

Problem Display
PID: 120014 (3k4/2pPp3/p7/4N3/8/2K5/2Q5/8 w - - 0 1)

Rosol, Karel

Svobodne Slovo, 1954

3k4/2pPp3/p7/4N3/8/2K5/2Q5/8

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qg8#
        • 2.Qb8#
      • 1...c5
        • 2.Qb6#
        • 2.Qb8#
      • 1...c6
        • 2.Qb6#
        • 2.Qb8#
      • 1...e6!
    • 1.Qg6?
      • threat
        • 2.Qe8#
        • 2.Qg8#
      • 1...c5
        • 2.Qb6#
      • 1...e6
        • 2.Qe8#
        • 2.Qg5#
        • 2.Qf6#
      • 1...c6!
    • 1.Qa2?
      • threat
        • 2.Qg8#
      • 1...c5
        • 2.Qa5#
      • 1...c6
        • 2.Qa5#
      • 1...e6!
    • 1.Qf2?
      • threat
        • 2.Qf8#
      • 1...c6
        • 2.Qb6#
      • 1...c5!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sf7#
      • 1...c5
        • 2.Qa5#
      • 1...c6
        • 2.Qa5#
      • 1...e6
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(b);OGATEB::QAB(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • P(b);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
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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).