MESON Chess Problem Database

Problem Display
PID: 68929 (2b1K1n1/1p1p4/1n2kp2/8/3Q4/4N3/p7/B7 w - - 0 1)

Fontaine, Leon

Het Belgisch Schaakbord (L'Echiquier Belge), 1956

2b1K1n1/1p1p4/1n2kp2/8/3Q4/4N3/p7/B7

#2

4 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sa8
      • 2.Qd5#
    • 1...Sh6
      • 2.Qxf6#
    • 1...Se7
      • 2.Qxf6#
    • 1...f5
      • 2.Qe5#
    • 1...d5
      • 2.Qxb6#
    • 1...d6
      • 2.Qe4#
  • Keys
    • 1.Qc5!
      • 1...Sa4
        • 2.Qd5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qd5#
      • 1...Sh6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#
      • 1...f5
        • 2.Qe5#
      • 1...d5
        • 2.Qxb6#
      • 1...d6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • S(h);N_GUARD::QAR1(C),XP(d)
    • P(d);N_GUARD::QAR1(C)
    • P(f);N_GUARD::QAR(C),XS(b)
    • P(f);SBLOCK::QAR2(C)
  • Actual
    • Q(C);
    • Vars
      • S(b);N_GUARD::QAB1(C)
      • S(b);N_GUARD::QAB1(C),XS(b)
      • S(h);N_GUARD::QAR1(C)
      • S(h);N_GUARD::QAR1(C),XS(h)
      • P(d);N_GUARD::QAR1(C)
      • P(f);N_GUARD::QAR(C),XS(b)
      • P(f);SBLOCK::QAB1(C)
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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).