MESON Chess Problem Database

Problem Display
PID: 47137 (1nN2N2/4p3/5kPP/3b1Pn1/4pQK1/8/8/8 w - - 0 1)

Nanning, Frederik Willem

Source?, 0000

1nN2N2/4p3/5kPP/3b1Pn1/4pQK1/8/8/8

#2

7 + 6

20 De Problemist 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.fxe6#
    • 1...Sf3
      • 2.Sh7#
    • 1...Sh3
      • 2.Sh7#
    • 1...Se6
      • 2.Sh7#
      • 2.fxe6#
    • 1...Sf7
      • 2.Sh7#
    • 1...Sh7
      • 2.Sxh7#
    • 1...Sa6
      • 2.Sd7#
    • 1...Sc6
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
    • 1...e5
      • 2.Qxg5#
      • 2.fxe5 ep#
    • 1...e6
      • 2.fxe6#
  • Tries
    • 1.Qxb8?
      • threat
        • 2.Sd7#
      • 1...Be6
        • 2.Qb2#
      • 1...Bc6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxe7#
      • 1...Be6
        • 2.Qc3#
      • 1...Se6
        • 2.Sh7#
      • 1...Sc6
        • 2.Sd7#
      • 1...Sd7
        • 2.Sxd7#
      • 1...e5
        • 2.Qd8#
        • 2.Qe7#
        • 2.Qg7#
      • 1...e6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(b);OGATE,P_PINP(C)::QAR(A)+P(C),XB(b)
    • S(c);N_GUARD::S(G)
    • S(c);N_GUARD::S(G),XS(c)
    • S(f);N_GUARD::S(G)
    • S(f);N_GUARD::S(G),XS(f)
    • P(e);OGATE::QAR(A)+P(C),XP(e)
  • Tries
    • Try
      • Q(A);XS(f)
      • Threat
        • S(G)
      • Vars
        • B(b);P_PINP(C),S_CUTP(e)::QAB(A)
      • Refutation
        • B(b);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(e)
    • Vars
      • B(b);P_PINP(C),S_CUTP(e)::QAB(A)
      • S(c);N_GUARD::S(G)
      • S(f);N_GUARD::S(G)
      • S(f);N_GUARD::S(G),XS(f)
      • P(e);OGATE::QAB1(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).