MESON Chess Problem Database

Problem Display
PID: 2269 (n1b5/1q6/2NpP3/3k4/4R3/Q4Pp1/1n4K1/8 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

n1b5/1q6/2NpP3/3k4/4R3/Q4Pp1/1n4K1/8

#2

6 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Qa6
      • 2.Se7#
    • 1...Qb3
      • 2.Se7#
    • 1...Qb5
      • 2.Se7#
    • 1...Qb6
      • 2.Se7#
    • 1...Qe7
      • 2.Sxe7#
    • 1...Qb8
      • 2.Se7#
    • 1...Bd7
      • 2.Se7#
    • 1...Sc7
      • 2.Se7#
  • Tries
    • 1.Qa5+?
      • 1...Qb5
        • 2.Qxb5#
      • 1...Kxc6!
  • Keys
    • 1.Qc3!
      • 1...Qxc6
        • 2.Qd4#
      • 1...Bxe6
        • 2.Rd4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Qa6
        • 2.Sb4#
        • 2.Se7#
      • 1...Qb3
        • 2.Se7#
      • 1...Qb4
        • 2.Sxb4#
        • 2.Se7#
      • 1...Qb5
        • 2.Se7#
      • 1...Qb6
        • 2.Se7#
      • 1...Qa7
        • 2.Sb4#
      • 1...Qc7
        • 2.Sb4#
      • 1...Qd7
        • 2.Sb4#
      • 1...Qe7
        • 2.Sb4#
        • 2.Sxe7#
      • 1...Qf7
        • 2.Sb4#
      • 1...Qg7
        • 2.Sb4#
      • 1...Qh7
        • 2.Sb4#
      • 1...Qb8
        • 2.Se7#
      • 1...Bd7
        • 2.Se7#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sb6
        • 2.Sb4#
      • 1...Sc7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_GUARD::S(E)
    • Q(e);N_GUARD::S(E),XQ(e)
    • B(g);S_CUTQ(e)::S(E)
    • S(f);S_CUTQ(e)::S(E)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAR2(B),XQ(e)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
  • Actual
    • Q(B);
    • Vars
      • Q(e);SBLOCK,XS(E)::QAR1(B)
      • B(g);SBLOCK,XP(F)::R1(D)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • Q(e);N_GUARD::S(E)
      • B(g);S_CUTQ(e)::S(E)
      • S(a);N_GUARD::QAB1(B)
      • S(f);S_CUTQ(e)::S(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).