MESON Chess Problem Database

Problem Display
PID: 133928 (8/5p1Q/5prp/6k1/8/4NK2/3N4/1B2B3 w - - 0 1)

Taraba, Jozef

Europe Echecs, 1974

8/5p1Q/5prp/6k1/8/4NK2/3N4/1B2B3

#2

6 + 5

14580 Chess Compositions (Taraba) 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg7
      • 2.Qf5#
    • 1...Rg8
      • 2.Qf5#
    • 1...h5
      • 2.Se4#
  • Tries
    • 1.Sf5?
      • 1...Rg7
        • 2.Qxh6#
      • 1...Rg8
        • 2.Qxh6#
      • 1...h5
        • 2.Bh4#
      • 1...Kh5!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Qxg6#
      • 1...Kh5
        • 2.Qxg6#
      • 1...f5
        • 2.Qxf5#
      • 1...Rg7
        • 2.Se4#
      • 1...Rg8
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE::QAR1(F)
    • P(d);::S(C)
  • Tries
    • Try
      • S(D);
      • Vars
        • R(c);N_GUARD::QAB1(F),XP(d)
        • P(d);::B(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(d)
  • Actual
    • Q(F);XP(e)
    • Threat
      • QAR1(F),XR(c)
    • Vars
      • K(a);P-FLIGHT,P_SPINR(c)::QAB1(F),XR(c)
      • P(b);OGATE::QAR1(F),XP(b)
      • R(c);::S(C)
HTML5 logo

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).