MESON Chess Problem Database

Problem Display
PID: 208201 (B5Q1/1RK5/7B/N1p5/4k3/8/8/8 w - - 0 1)

Hawkins, Xenophon

Dubuque Chess Journal, 1875

B5Q1/1RK5/7B/N1p5/4k3/8/8/8

#2

6 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc4#
    • 1...Kf3
      • 2.Rb2#
  • Tries
    • 1.Rb6+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf5
        • 2.Qe6#
        • 2.Qg5#
      • 1...Kd4!
  • Keys
    • 1.Kd6!
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kf3
        • 2.Rb2#
      • 1...Kd4
        • 2.Qc4#
      • 1...Kf5
        • 2.Rf7#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(F)
    • K(a);S_FLIGHT::B(E)+R(C)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • QAB1(F)
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::B(E)+R(C)
      • K(a);P-FLIGHT::QAR1(F)
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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).