Problem Display
PID: 280672 (8/3B4/Q7/3k4/8/1P6/3B2K1/8 w - - 0 1)

Knight, JT

Bolton Football Field, 1892

(First published on Sat Oct 29 1892)

8/3B4/Q7/3k4/8/1P6/3B2K1/8

#2

5 + 1


15239 Valois Notebooks 2025

SOLUTION


  • SOUND
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qc6#
      • 1...Kc5
        • 2.Qc6#
      • 1...Ke4!
    • 1.Be3?
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Ke4!
  • Keys
    • 1.Bf4!
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4
        • 2.Qc4#
      • 1...Kc5
        • 2.Qd6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAB1(D)
    • Vars
      • K(a);P-FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::QAR2(D)
      • K(a);N_GUARD,P-FLIGHT::QAB1(D)


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).