MESON Chess Problem Database

Problem Display
PID: 2264 (4n3/7N/6pr/6pk/3Q1p1r/7P/4N3/4K3 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

4n3/7N/6pr/6pk/3Q1p1r/7P/4N3/4K3

#2

5 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sc7
      • 2.Sf6#
    • 1...Sg7
      • 2.Sf6#
    • 1...f3
      • 2.Sg3#
    • 1...g4
      • 2.Sxf4#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qxg5#
      • 1...Rg4
        • 2.Qxg4#
      • 1...g4
        • 2.Sxf4#
      • 1...Rxh7!
  • Keys
    • 1.Qd7!
      • 1...Rxh3
        • 2.Qxh3#
      • 1...Rxh7
        • 2.Qxh7#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Sd6
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sc7
        • 2.Sf6#
      • 1...Sg7
        • 2.Sf6#
      • 1...f3
        • 2.Sg3#
      • 1...g4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::S(E)
    • S(g);N_GUARD::S(E),XS(g)
    • P(a);N_GUARD::S(B)
    • P(c);N_GUARD,S_CUTR(b)::S(B),XP(a)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAR1(D),XP(c)
      • Vars
        • R(b);N_GUARD::QAB1(D),XR(b)
        • P(c);N_GUARD,S_CUTR(b)::S(B),XP(a)
      • Refutation
        • R(f);XS(E)
  • Actual
    • Q(D);
    • Vars
      • R(b);OGATE,XP(C)::QAR2(D),XR(b)
      • R(f);OGATE,XS(E)::QAR2(D),XR(f)
      • R(b);N_GUARD::QAB1(D),XR(b)
      • S(g);N_GUARD::S(E)
      • S(g);N_GUARD::S(E),XS(g)
      • P(a);N_GUARD::S(B)
      • P(c);N_GUARD,S_CUTR(b)::S(B),XP(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).