MESON Chess Problem Database

Problem Display
PID: 4836 (2b5/2p1p3/2pk1p1Q/2N2PP1/3PK3/n3N3/8/8 w - - 0 1)

Williams, Philip Hamilton

Hereford Times, 1892

2b5/2p1p3/2pk1p1Q/2N2PP1/3PK3/n3N3/8/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5+
      • 2.Sxf5#
    • 1...Be6
      • 2.Qh2#
    • 1...Bd7
      • 2.Sb7#
    • 1...Sb1
      • 2.Sc4#
    • 1...Sc2
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
    • 1...Sb5
      • 2.Sc4#
    • 1...e5
      • 2.Qf8#
    • 1...e6
      • 2.Qf8#
  • Tries
    • 1.Qxf6+?
      • 1...Be6
        • 2.Qe5#
        • 2.Qxe6#
      • 1...e6
        • 2.Qf8#
      • 1...exf6!
  • Keys
    • 1.Qh8!
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...fxg5
        • 2.Qe5#
      • 1...e5
        • 2.Qf8#
      • 1...e6
        • 2.Qf8#
      • 1...Ba6
        • 2.Qd8#
      • 1...Be6
        • 2.Qh2#
      • 1...Bb7
        • 2.Qd8#
      • 1...Bd7
        • 2.Sb7#
      • 1...Sb1
        • 2.Sc4#
      • 1...Sc2
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sb5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,XP(E)::S(A),XB(g)
    • B(g);N_SPINP(d),S_CUTP(f)::QAB(G)
    • B(g);N_GUARD,SBLOCK::S(D)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • P(f);OGATEB::QAB(G)
    • P(f);N_SPINP(d),OGATEB::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • P(f);OGATEB,P_SPINP(f)::QAB(G)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • Q(G);N_PINP(d)
    • Vars
      • B(g);CHECK,XP(E)::S(A),XB(g)
      • P(d);OGATE,XP(F)::QAB1(G)
      • P(f);OGATEB::QAB(G)
      • B(g);N_GUARD::QAR2(G)
      • B(g);S_CUTP(f)::QAB(G)
      • B(g);N_GUARD,SBLOCK::S(D)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(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).