MESON Chess Problem Database

Problem Display
PID: 142589 (3nQ3/5p2/Nb1p1K2/2pk4/1B3R2/2rp4/6b1/8 w - - 0 1)

Bouchez, Laurent

Phenix, 1990

3nQ3/5p2/Nb1p1K2/2pk4/1B3R2/2rp4/6b1/8

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qe4#
    • 1...Bh3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Sxc7#
    • 1...Sc6
      • 2.Qxf7#
    • 1...Se6
      • 2.Qa8#
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Rd4#
      • 1...Rxc5
        • 2.Sb4#
      • 1...Bxc5
        • 2.Sc7#
      • 1...dxc5
        • 2.Qd7#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rc4
        • 2.Rf5#
      • 1...Sc6
        • 2.Qxf7#
      • 1...Se6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::QAB1(E)
    • B(a);N_GUARD::QAB1(E),XB(a)
    • B(f);N_GUARD::S(C)
    • B(f);N_GUARD::S(C),XB(f)
    • S(i);N_GUARD,SBLOCK::QAB(E),XP(h)
    • S(i);OGATE::QAB(E)
  • Actual
    • B(A);XP(d)
    • Threat
      • R1(B)
    • Vars
      • R(b);SBLOCK,XB(A)::S(C)
      • B(f);N_GUARD,SBLOCK,XB(A)::S(C)
      • P(g);OGATEB,XB(A)::QAR2(E)
      • B(a);N_GUARD::QAB1(E),XB(a)
      • R(b);SBLOCK::R(B)
      • S(i);N_GUARD,SBLOCK::QAB(E),XP(h)
      • S(i);OGATE::QAB(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).