MESON Chess Problem Database

Problem Display
PID: 68794 (1n1k2K1/3B1pn1/p1PP1b2/6Nb/2QN4/1R6/1r3qr1/8 w - - 0 1)

de Smet, O

Het Belgisch Schaakbord (L'Echiquier Belge), 1956

1n1k2K1/3B1pn1/p1PP1b2/6Nb/2QN4/1R6/1r3qr1/8

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Rxb8#
    • 1...Rc2
      • 2.Rxb8#
    • 1...Rd2
      • 2.Rxb8#
    • 1...Re2
      • 2.Rxb8#
    • 1...Bd1
      • 2.Sxf7#
    • 1...Be2
      • 2.Sxf7#
    • 1...Bf3
      • 2.Sxf7#
    • 1...Bg4
      • 2.Sxf7#
  • Keys
    • 1.Qxf7!
      • threat
        • 2.c7#
      • 1...Bxf7+
        • 2.Sxf7#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Sxd7
        • 2.Qxd7#
      • 1...Qc2
        • 2.Qxf6#
      • 1...Rc2
        • 2.Rxb8#
      • 1...Be7
        • 2.Qxe7#
      • 1...Se6
        • 2.Sxe6#
      • 1...Se8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::R(A),XS(i)
    • B(d);N_GUARD::S(D),XP(g)
  • Actual
    • Q(B);XP(g)
    • Threat
      • P(E)
    • Vars
      • B(d);CHECK,XQ(B)::S(D),XB(d)
      • S(i);XP(E)::S(C),XS(i)
      • S(i);OGATE,XB(G)::QAR1(B),XS(i)
      • Q(b);N_GUARD::QAB(B),XB(f)
      • R(a);N_GUARD::R(A),XS(i)
      • B(f);N_GUARD::QAB1(B),XB(f)
      • S(h);N_GUARD,P_PINS(D)::S(C),XS(h)
      • S(h);N_GUARD,P_PINS(D)::S(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).