MESON Chess Problem Database

Problem Display
PID: 157507 (Q7/8/K7/8/1B1k2N1/8/4B3/8 w - - 0 1)

Butler, Henry William

Elmira Telegram, 0000

Q7/8/K7/8/1B1k2N1/8/4B3/8

#2

5 + 1

5454 Near Snap 2016
15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kd3
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5!
    • 1.Qc8?
      • threat
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...Ke4!
    • 1.Qh8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5!
  • Keys
    • 1.Bd1!
      • 1...Kd3
        • 2.Qd5#
      • 1...Kc4
        • 2.Qe4#

This anticipates 11856(1972), 153252(1984), 77482(1992), 232960(1994), 219476(1995), 104614(2001), 245496(2001)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
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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).