MESON Chess Problem Database

Problem Display
PID: 175023 (2K5/5Q2/8/4N3/3k4/6N1/8/4B3 w - - 0 1)

Nourse, CA

Checkmate, 1901

2K5/5Q2/8/4N3/3k4/6N1/8/4B3

#2

5 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
  • Tries
    • 1.Kd7?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxe5
        • 2.Bc3#
      • 1...Kc5!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Sf1#
        • 2.Sf5#
        • 2.Qe4#
      • 1...Kxe5!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Qe4#
        • 2.Qd2#
      • 1...Kxd5!
  • Keys
    • 1.Kc7!
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxe5
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(D)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT,XS(C)::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • K(E);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT,XS(C)::B(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).