MESON Chess Problem Database

Problem Display
PID: 1961 (3n4/1p5K/1Q3B2/3kNP1B/1R4p1/n3pPp1/2pq2r1/1b1r4 w - - 0 1)

Cook, Eugene Beauharnais

Sunday Delta, 1859

3n4/1p5K/1Q3B2/3kNP1B/1R4p1/n3pPp1/2pq2r1/1b1r4

#2

8 + 12

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rb5#
    • 1...Sb5
      • 2.Rxb5#
    • 1...Sf7
      • 2.Bxf7#
    • 1...gxf3
      • 2.Bxf3#
  • Tries
    • 1.Bf7+?
      • 1...Se6
        • 2.Bxe6#
      • 1...Sxf7!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qd6#
      • 1...Qxb4
        • 2.Sxe3#
      • 1...Sxc4
        • 2.Rb5#
      • 1...gxf3
        • 2.Bxf3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sc6
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R(B)
    • S(f);N_GUARD::R(B),XS(f)
    • S(l);N_GUARD::B(E),XS(l)
    • P(i);OGATE,XP(A)::B(E),XP(i)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • S(l);N_GUARD,P_SPINS(l)::B(E),XS(l)
      • Refutation
        • S(l);XB(E)
  • Actual
    • S(C);
    • Threat
      • QAR1(F)
    • Vars
      • Q(d);N_GUARD,XR(B)::S(C),XP(g)
      • S(f);N_GUARD,SBLOCK,XS(C)::R(B)
      • P(i);OGATE,XP(A)::B(E),XP(i)
      • S(f);N_GUARD::QAR2(F),XS(f)
      • S(l);N_GUARD::B(E)
      • S(l);N_GUARD::B(E),XS(l)
HTML5 logo

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).