MESON Chess Problem Database

Problem Display
PID: 252647 (8/4Q3/8/3P4/6k1/6NN/8/5K2 w - - 0 1)

Romanov, V

Zadachi i Etyudi, 2005

8/4Q3/8/3P4/6k1/6NN/8/5K2

#2

5 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sh1?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxh3!
    • 1.Sh5?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qe6#
      • 1...Kxh5
        • 2.Qg5#
      • 1...Kxh3!
    • 1.Qh4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kxh4!
    • 1.Qg5+?
      • 1...Kf3
        • 2.Sg1#
        • 2.Qf4#
      • 1...Kxh3!
  • Keys
    • 1.Sf5!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxh3
        • 2.Qh4#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
        • K(a);N_GUARD,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • S(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(E)
        • K(a);N_GUARD,S_FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • S(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT,XS(C)::QAR1(E)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(a);N_GUARD,S_FLIGHT::QAR1(E)
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).