MESON Chess Problem Database

Problem Display
PID: 262363 (8/8/3K1p2/5P2/2B1k3/8/5Q2/8 w - - 0 1)

Oneguine, E

Europe Echecs, 1985

8/8/3K1p2/5P2/2B1k3/8/5Q2/8

#2

4 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qf1?
      • 1...Kd4
        • 2.Qd3#
      • 1...Ke3!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxf3!
  • Keys
    • 1.Qg3!
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxf5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • K(a);N_GUARD,S_FLIGHT,XP(C)::B(B)
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).