MESON Chess Problem Database

Problem Display
PID: 4788 (7b/p1B2Q2/Pp5n/3p1p2/1Kpkp3/6N1/2PP4/5b2 w - - 0 1)

Williams, Philip Hamilton

Illustrated Sporting and Dramatic News, 1891

7b/p1B2Q2/Pp5n/3p1p2/1Kpkp3/6N1/2PP4/5b2

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Sxe2#
    • 1...Bg2
      • 2.Se2#
    • 1...Bd3
      • 2.c3#
    • 1...Bh3
      • 2.Se2#
    • 1...Bf6
      • 2.Qxf6#
    • 1...Bg7
      • 2.Qxg7#
    • 1...Sg4
      • 2.Sxf5#
    • 1...Sxf7
      • 2.Sxf5#
    • 1...Sg8
      • 2.Sxf5#
  • Tries
    • 1.Qf8?
      • threat
        • 2.Qxh8#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Sg4
        • 2.Sxf5#
      • 1...Sf7
        • 2.Sxf5#
      • 1...Sg8
        • 2.Sxf5#
      • 1...Be5!
  • Keys
    • 1.Bf4!
      • 1...Sxf7
        • 2.Sxf5#
      • 1...Be2
        • 2.Sxe2#
      • 1...Bg2
        • 2.Se2#
      • 1...Bd3
        • 2.c3#
      • 1...Bh3
        • 2.Se2#
      • 1...Be5
        • 2.Be3#
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Sg4
        • 2.Sxf5#
      • 1...Sg8
        • 2.Sxf5#
      • 1...c3
        • 2.dxc3#
      • 1...e3
        • 2.dxe3#
      • 1...b5
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(C),XB(a)
    • B(a);N_GUARD::S(C)
    • B(a);SBLOCK::P(A)
    • B(j);N_GUARD::QAB(G),XB(j)
    • S(h);N_GUARD::S(C),XP(f)
    • S(h);N_GUARD,XQ(G)::S(C),XP(f)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB(G),XB(j)
      • Vars
        • B(j);N_GUARD::QAB(G),XB(j)
        • S(h);N_GUARD::S(C),XP(f)
      • Refutation
        • B(j);
  • Actual
    • B(F);
    • Vars
      • S(h);N_GUARD,XQ(G)::S(C),XP(f)
      • B(a);N_GUARD::S(C),XB(a)
      • B(a);N_GUARD::S(C)
      • B(a);SBLOCK::P(A)
      • B(j);SBLOCK::B(F)
      • B(j);N_GUARD::QAB(G),XB(j)
      • S(h);N_GUARD::S(C),XP(f)
      • P(b);OGATE::P(B),XP(b)
      • P(d);OGATE::P(B),XP(d)
      • P(g);OGATEB::QAB(G),XP(i)
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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).