MESON Chess Problem Database

Problem Display
PID: 5108 (8/N1Bp4/8/4Rp2/2nk4/n2N4/2Q3p1/5bK1 w - - 0 1)

Williams, Philip Hamilton

Birmingham Post, 1900

8/N1Bp4/8/4Rp2/2nk4/n2N4/2Q3p1/5bK1

#2

6 + 7

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Sb5#
    • 1...Sb5
      • 2.Sxb5#
    • 1...Sb2
      • 2.Bb6#
    • 1...Sd2
      • 2.Bb6#
    • 1...Se3
      • 2.Bb6#
    • 1...Sa5
      • 2.Bb6#
    • 1...Sb6
      • 2.Bxb6#
    • 1...Sd6
      • 2.Bb6#
    • 1...d5
      • 2.Sc6#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Sb3#
      • 1...Sxc2
        • 2.Sb5#
      • 1...Sd6
        • 2.Qc5#
      • 1...d6
        • 2.Sc6#
      • 1...Sd2
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sxe5!
  • Keys
    • 1.Sf4!
      • 1...Sxc2
        • 2.Sb5#
      • 1...Sxe5
        • 2.Bb6#
      • 1...Sd6
        • 2.Qc5#
      • 1...d5
        • 2.Se6#
      • 1...d6
        • 2.Sc6#
      • 1...Be2
        • 2.Sxe2#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sb1
        • 2.Sb5#
      • 1...Sb5
        • 2.Sxb5#
      • 1...Sb2
        • 2.Qc5#
      • 1...Sd2
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sb6
        • 2.Qc5#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(E)
    • S(c);N_GUARD::S(E),XS(c)
    • S(d);N_GUARD::B(F)
    • S(d);N_GUARD::B(F),XS(d)
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(c);N_GUARD,XQ(B)::S(E)
        • S(d);OGATE::QAB1(B)
        • P(g);N_GUARD::S(E)
      • Refutation
        • S(d);XR(D)
  • Actual
    • S(C);
    • Vars
      • S(c);N_GUARD,XQ(B)::S(E)
      • S(d);N_GUARD,SBLOCK,XR(D)::B(F)
      • S(d);OGATE::QAB1(B)
      • P(g);N_GUARD::S(C)
      • P(g);N_GUARD::S(E)
      • B(a);N_GUARD::S(C),XB(a)
      • B(a);N_GUARD::QAR1(B),XB(a)
      • S(c);N_GUARD::S(E)
      • S(c);N_GUARD::S(E),XS(c)
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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).