MESON Chess Problem Database

Problem Display
PID: 4565 (4nb2/2p1p1p1/2B3P1/4kN1P/1P1N4/8/1B1Q3K/8 w - - 0 1)

Laws, Benjamin Glover

1st Prize, Ayr Argus & Express, 1880

4nb2/2p1p1p1/2B3P1/4kN1P/1P1N4/8/1B1Q3K/8

#2

9 + 6

5808 Preston Guardian 1880
5689 The Chess Monthly (Hoffer) 1880
3316 Chess Problem Text Book 1887
499 Chess Problems (Rayner) 1890
15 British Chess Magazine 1911
3571 An English Bohemian 1933
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2+?
      • 1...Ke6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Se2+?
      • 1...Ke6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Sb3+?
      • 1...Ke6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Sf3+?
      • 1...Ke6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Sb5+?
      • 1...Ke6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Se6+?
      • 1...Kxe6
        • 2.Bd7#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kxf5!
    • 1.Sh6?
      • 1...Kd6
        • 2.Sf7#
      • 1...Kf6
        • 2.Sg4#
        • 2.Qf4#
      • 1...Sd6
        • 2.Sg4#
      • 1...Sf6
        • 2.Sf7#
      • 1...e6
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sdf5#
      • 1...gxh6!
    • 1.Qe1+?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kf6!
    • 1.Qf4+?
      • 1...Kf6
        • 2.Se3#
        • 2.Sg3#
        • 2.Sh4#
        • 2.Sd6#
        • 2.Sh6#
      • 1...Kxf4!
    • 1.Qg5?
      • 1...Sf6
        • 2.Qg3#
      • 1...e6
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
      • 1...Sd6!
    • 1.Qe2+?
      • 1...Kf4
        • 2.Bc1#
      • 1...Kf6!
  • Keys
    • 1.Se3!
      • 1...Kf4
        • 2.Se6#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Sg4#
      • 1...Sd6
        • 2.Sg4#
      • 1...Sf6
        • 2.Sc4#
      • 1...e6
        • 2.Se2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(F)
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::S(F)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(d);XS(F)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • S(e);SBLOCK::QAB(B)
      • Refutation
        • S(e);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT::S(F)
      • S(e);SBLOCK::S(F)
      • P(c);SBLOCK::B(A)+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).