MESON Chess Problem Database

Problem Display
PID: 262347 (8/2K1k2N/8/6PQ/4P3/8/8/8 w - - 0 1)

Oudot, Jean

Europe Echecs, 1967

8/2K1k2N/8/6PQ/4P3/8/8/8

#2

5 + 1

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qe8#
  • Tries
    • 1.Kc6?
      • 1...Ke6
        • 2.Qe8#
      • 1...Kd8!
    • 1.Sf6?
      • threat
        • 2.Qe8#
      • 1...Ke6
        • 2.Qe8#
      • 1...Kf8!
    • 1.Qg4?
      • threat
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#
        • 2.Qd7#
      • 1...Kf7!
    • 1.Qh3?
      • threat
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#
        • 2.Qd7#
      • 1...Kf7!
    • 1.Qh6?
      • 1...Ke8
        • 2.Qf8#
        • 2.Qe6#
      • 1...Kf7!
    • 1.g6?
      • threat
        • 2.Qe5#
      • 1...Ke8
        • 2.Qe5#
      • 1...Ke6!
  • Keys
    • 1.Qf3!
      • 1...Ke6
        • 2.Qf6#
      • 1...Ke8
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(B);
      • Threat
        • QAR2(C)
      • Vars
        • K(a);P-FLIGHT::QAR(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAR1(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).