MESON Chess Problem Database

Problem Display
PID: 82321 (6b1/1Q2p3/3b2p1/1N2k1K1/R1nNP3/8/4p1B1/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Het Belgisch Schaakbord (L'Echiquier Belge), 1989

6b1/1Q2p3/3b2p1/1N2k1K1/R1nNP3/8/4p1B1/8

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be6
      • 2.Sf3#
      • 2.Sc6#
    • 1...Bh7
      • 2.Qd5#
    • 1...e6
      • 2.Sf3#
      • 2.Sc6#
      • 2.Qg7#
  • Tries
    • 1.Bh3?
      • threat
        • 2.Sf3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd2
        • 2.Sc6#
      • 1...e1S!
    • 1.Qd7?
      • threat
        • 2.Sc6#
      • 1...Sa5
        • 2.Sf3#
      • 1...Bd5!
    • 1.Qxe7+?
      • 1...Be6
        • 2.Sc6#
        • 2.Qf6#
        • 2.Qxe6#
        • 2.Qg7#
      • 1...Bxe7+!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Sc6#
      • 1...Bd5
        • 2.Qh8#
      • 1...Sa5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::QAR1(G),XB(g)
    • B(g);N_GUARD::QAR1(G)
  • Tries
    • Try
      • B(A);
      • Threat
        • S(C)
      • Vars
        • B(g);N_GUARD::QAR1(G),XB(g)
        • S(b);::S(C)
      • Refutation
        • P(a);
    • Try
      • Q(G);
      • Threat
        • S(C)
      • Vars
        • S(b);::S(C)
      • Refutation
        • B(g);
    • Try
      • Q(G);CHECK,XP(f)
      • Refutation
        • B(d);CHECK,XQ(G)
  • Actual
    • Q(G);
    • Threat
      • S(C)
    • Vars
      • B(g);OGATE::QAB(G)
      • S(b);::S(C)
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).