MESON Chess Problem Database

Problem Display
PID: 237662 (8/p1n1B1N1/B1p1n1p1/1ppkpp2/3p4/3P2Q1/2NKP3/8 w - - 0 1)

Neyndorff, Luke

Variantim, 2019

8/p1n1B1N1/B1p1n1p1/1ppkpp2/3p4/3P2Q1/2NKP3/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Bc4#
    • 1...c4
      • 2.Sb4#
    • 1...e4
      • 2.Qd6#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sf6#
      • 1...Sf4
        • 2.Sxc7#
      • 1...Sg5
        • 2.Sxc7#
      • 1...Sg7
        • 2.Sxc7#
      • 1...Sd8
        • 2.Sxc7#
      • 1...Sf8
        • 2.Sxc7#
      • 1...Sxe8!
  • Keys
    • 1.Qxg6!
      • 1...Sxg7
        • 2.Qd6#
      • 1...Sxa6
        • 2.Qxe6#
      • 1...e4
        • 2.Qxf5#
      • 1...Sf4
        • 2.Qd6#
      • 1...Sg5
        • 2.Qd6#
      • 1...Sd8
        • 2.Qd6#
      • 1...Sf8
        • 2.Qd6#
      • 1...Sa8
        • 2.Qxe6#
      • 1...Se8
        • 2.Qxe6#
      • 1...b4
        • 2.Bc4#
      • 1...c4
        • 2.Sb4#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::B(F)
    • P(c);N_GUARD::S(A)
    • P(e);OGATE::QAR1(E)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(h);N_GUARD::S(H),XS(k)
      • Refutation
        • S(k);XS(H)
  • Actual
    • Q(E);XP(i)
    • Vars
      • S(h);OGATE,XS(H)::QAR1(E)
      • S(k);N_GUARD,XB(F)::QAB1(E),XS(h)
      • P(e);OGATEB::QAR2(E),XP(f)
      • S(h);OGATE::QAR1(E)
      • S(k);N_GUARD::QAB1(E),XS(h)
      • P(b);OGATE::B(F)
      • P(c);N_GUARD::S(A)
      • P(f);OGATE::QAB1(E)
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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).