MESON Chess Problem Database

Problem Display
PID: 151189 (8/4N2b/1B6/3p1p1K/Q3Nk2/1n6/4P3/8 w - - 0 1)

Challenger, Alfred Clement

Hampstead and Highgate Express, 1896

(First published on Sat Oct 17 1896)

8/4N2b/1B6/3p1p1K/Q3Nk2/1n6/4P3/8

#2

6 + 5

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6+
      • 2.Sxg6#
    • 1...Bg8
      • 2.Sg6#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Sxd5#
        • 2.Bc7#
      • 1...Bg6+
        • 2.Sxg6#
      • 1...dxe4
        • 2.Bc7#
        • 2.Qd6#
      • 1...fxe4
        • 2.Bc7#
      • 1...Bg8
        • 2.Sg6#
        • 2.Bc7#
      • 1...Sxd4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sxd5#
      • 1...Bg6+
        • 2.Sxg6#
      • 1...Kxe4
        • 2.Sg6#
      • 1...Ke5
        • 2.Sg6#
      • 1...dxe4
        • 2.Qb8#
      • 1...fxe4
        • 2.Qb8#
      • 1...d4
        • 2.Sd5#
      • 1...Bg8
        • 2.Sg6#

There are these versions: 4994

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(e);CHECK,N_GUARD::S(F),XB(e)
    • B(e);N_GUARD::S(F)
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);CHECK,N_GUARD::S(F),XB(e)
        • P(d);P_SPINP(d),XS(C)::B(E)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • S(F),XP(c)
    • Vars
      • B(e);CHECK,N_GUARD::S(F),XB(e)
      • K(b);P-FLIGHT,XS(C)::QAR(B)+S(F)
      • K(b);S_FLIGHT::QAR(B)+S(F),DCHECK
      • P(c);SBLOCK,XS(C)::QAB(B)
      • P(d);SBLOCK,XS(C)::QAB(B)
      • P(c);::S(F)
      • B(e);N_GUARD::S(F)
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).