MESON Chess Problem Database

Problem Display
PID: 234628 (6b1/8/r7/8/3B4/6Q1/8/1k1Kn3 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2004

6b1/8/r7/8/3B4/6Q1/8/1k1Kn3

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Qb3#
    • 1...Bb3+
      • 2.Qxb3#
    • 1...Bh7
      • 2.Qb3#
  • Tries
    • 1.Qb8+?
      • 1...Ka2
        • 2.Qb2#
      • 1...Bb3+
        • 2.Qxb3#
      • 1...Rb6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qb2#
      • 1...Bb3+
        • 2.Qxb3#
      • 1...Ka2
        • 2.Qb2#
      • 1...Ra2
        • 2.Qc1#
      • 1...Rb6
        • 2.Qa1#
      • 1...Sd3
        • 2.Qc2#

There are these versions: 234679

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(c);S_CUTB(d)::QAR2(B)
    • B(d);CHECK,N_GUARD::QAR2(B),XB(d)
    • B(d);N_GUARD::QAR2(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • B(d);CHECK,N_GUARD,P_SPINB(d)::QAR2(B),XB(d)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • B(d);CHECK,N_GUARD::QAR2(B),XB(d)
      • K(a);S_FLIGHT::QAR1(B)
      • R(c);SBLOCK::QAR1(B)
      • R(c);N_GUARD::QAR1(B)
      • S(b);N_GUARD::QAB1(B)
HTML5 logo

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).