MESON Chess Problem Database

Problem Display
PID: 195069 (2B5/1Q4P1/4N1n1/3N1k2/3P2n1/2B5/1b4P1/6K1 w - - 0 1)

McIlvane, John A

Pittsburgh Gazette-Times, 1918

2B5/1Q4P1/4N1n1/3N1k2/3P2n1/2B5/1b4P1/6K1

#2

9 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sc5#
    • 1...Ba1
      • 2.Qb1#
    • 1...Bc1
      • 2.Qb1#
    • 1...Ba3
      • 2.Qb1#
    • 1...Bxc3
      • 2.Qb1#
    • 1...Sf6
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kf6
        • 2.g8S#
      • 1...Sxe3!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Sc5#
        • 2.Qf3#
      • 1...Sf6!
  • Keys
    • 1.g8S!
      • 1...Ke4
        • 2.Sc5#
      • 1...Bxc3
        • 2.Qb1#
      • 1...Sf2
        • 2.Se3#
      • 1...Sh2
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...S4e5
        • 2.Se3#
      • 1...Sf6
        • 2.Se3#
      • 1...Sh6
        • 2.Se3#
      • 1...Sf4
        • 2.Sde7#
      • 1...Sh4
        • 2.Sde7#
      • 1...S6e5
        • 2.Sde7#
      • 1...Se7
        • 2.Sdxe7#
      • 1...Sf8
        • 2.Sde7#
      • 1...Sh8
        • 2.Sde7#
      • 1...Ba1
        • 2.Qb1#
      • 1...Bc1
        • 2.Qb1#
      • 1...Ba3
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(F)
    • B(a);OGATE::QAB(G)
    • B(a);OGATE,XB(C)::QAB(G)
    • S(b);N_GUARD,SBLOCK::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::P=S
      • Refutation
        • S(b);XS(E)
    • Try
      • Q(G);CHECK
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • P(H);
    • Vars
      • K(c);S_FLIGHT::S(F)
      • B(a);OGATE,XB(C)::QAB(G)
      • S(b);N_GUARD::S(E)
      • S(b);N_GUARD::S(E),XS(b)
      • S(d);N_GUARD::S(E)
      • S(d);N_GUARD::S(E),XS(d)
      • B(a);OGATE::QAB(G)
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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).