MESON Chess Problem Database

Problem Display
PID: 195134 (nb1N4/3p4/n1B5/2k1P3/8/1QB4p/8/2K2b2 w - - 0 1)

MacBride, Robert C

Brisbane Courier, 1918

nb1N4/3p4/n1B5/2k1P3/8/1QB4p/8/2K2b2

#2

6 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Qb5#
    • 1...Bb5
      • 2.Qxb5#
    • 1...Sb4
      • 2.Qxb4#
    • 1...S6c7
      • 2.Qb4#
    • 1...dxc6
      • 2.Se6#
      • 2.Sb7#
  • Keys
    • 1.Ba5!
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qc3#
      • 1...dxc6
        • 2.Se6#
      • 1...Bg2
        • 2.Qc3#
      • 1...Bc4
        • 2.Qe3#
      • 1...Sb4
        • 2.Qxb4#
      • 1...S6c7
        • 2.Qb4#
      • 1...Sb6
        • 2.Bxb6#
      • 1...S8c7
        • 2.Bb6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR1(B)
    • B(a);N_GUARD::QAR1(B),XB(a)
    • S(d);N_GUARD::QAB1(B),XS(d)
    • S(d);N_GUARD::QAB1(B)
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • P(e);N_GUARD,SBLOCK,XB(E)::S(F)
      • B(a);N_GUARD::QAR2(B)
      • B(a);SBLOCK::QAB(B)
      • S(d);N_GUARD::QAB1(B),XS(d)
      • S(d);N_GUARD::QAB1(B)
      • S(f);N_GUARD::B(C),XS(f)
      • S(f);N_GUARD::B(C)
      • P(e);::QAR1(B),XP(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).