MESON Chess Problem Database

Problem Display
PID: 185751 (1N2BB2/2pb4/1p6/1kq5/1P1P2Qp/1P5K/N4R2/8 w - - 0 1)

Nanning, Frederik Willem

Tijdschrift vd KNSB, 1935

1N2BB2/2pb4/1p6/1kq5/1P1P2Qp/1P5K/N4R2/8

#2

10 + 6

136 Problem Observer 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3+
      • 2.Sxc3#
    • 1...Qd5
      • 2.Sc3#
    • 1...Qe5
      • 2.Sc3#
    • 1...Qf5
      • 2.Sc3#
    • 1...Qg5
      • 2.Sc3#
    • 1...Qh5
      • 2.Sc3#
  • Tries
    • 1.Bxd7+?
      • 1...Qc6
        • 2.Sc3#
        • 2.Bxc6#
        • 2.Rf5#
        • 2.Qe2#
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qg5#
      • 1...c6!
    • 1.Qxd7+?
      • 1...Qc6
        • 2.Sc3#
        • 2.Rf5#
        • 2.Qf5#
        • 2.Qxc6#
        • 2.Qd5#
      • 1...c6!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qe2#
      • 1...Qxf5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(c);CHECK,N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD::S(A)
  • Tries
    • Try
      • B(I);CHECK,N_SPINQ(G),XB(f)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(G);CHECK,N_SPINQ(G),XB(f)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • R(B);N_SPINQ(G),P_PINQ(c)
    • Threat
      • QAB(G)
    • Vars
      • Q(c);N_SPINQ(c),P_PINQ(G),XR(B)::S(A)
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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).