MESON Chess Problem Database

Problem Display
PID: 65212 (6b1/1K1k2Br/6B1/4Q3/8/8/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2006

6b1/1K1k2Br/6B1/4Q3/8/8/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qd6#
      • 2.Qc7#
      • 2.Qe8#
    • 1...Be6
      • 2.Qc7#
  • Tries
    • 1.Bf7?
      • threat
        • 2.Qc7#
      • 1...Kd8
        • 2.Qd6#
        • 2.Qc7#
        • 2.Qe8#
      • 1...Bxf7!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Be8#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rf7
        • 2.Bf5#
      • 1...Be6
        • 2.Qc7#
      • 1...Bf7
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::QAR1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Refutation
        • B(c);XB(B)
  • Actual
    • B(D);
    • Threat
      • B(B)
    • Vars
      • B(c);CHECK,N_GUARD::QAR2(A),XB(c)
      • R(b);N_GUARD::QAR1(A),XR(b)
      • R(b);S_CUTB(c)::B(B)
      • B(c);SBLOCK::QAR1(A)
      • B(c);S_CUTR(b)::QAR1(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).