MESON Chess Problem Database

Problem Display
PID: 24605 (2b5/B3pN2/5pB1/8/4pk2/4N2n/1Q4K1/8 w - - 0 1)

Nanning, Frederik Willem

2nd HM., The Australian, 1928

2b5/B3pN2/5pB1/8/4pk2/4N2n/1Q4K1/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Sd5#
    • 1...Be6
      • 2.Qb8#
    • 1...Sf2
      • 2.Qxf2#
    • 1...f5
      • 2.Qe5#
    • 1...e6
      • 2.Qxf6#
  • Tries
    • 1.Qxf6+?
      • 1...Bf5
        • 2.Qe5#
        • 2.Qxf5#
      • 1...exf6!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Sd5#
      • 1...Be6
        • 2.Bb8#
      • 1...Bb7
        • 2.Qg4#
      • 1...e6
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(f);SBLOCK::S(C)
    • B(f);S_CUTP(e)::QAB(A)
    • S(a);N_GUARD::QAR2(A),XS(a)
    • P(d);N_GUARD::QAB1(A)
    • P(e);N_GUARD,S_CUTB(f)::QAR2(A),XP(d)
  • Tries
    • Try
      • Q(A);CHECK,XP(d)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • B(f);S_CUTP(e)::B(E)
      • B(f);N_GUARD::QAR1(A)
      • P(e);S_CUTB(f)::QAR1(A)
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).