MESON Chess Problem Database

Problem Display
PID: 118315 (5R2/5NN1/3K3b/4p3/3pk3/R4rB1/8/6nQ w - - 0 1)

Pradignat, Emile Leonard

Montreal Gazette, 1896

5R2/5NN1/3K3b/4p3/3pk3/R4rB1/8/6nQ

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qh7#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Bxg7
      • 2.Sg5#
    • 1...Se2
      • 2.Qxf3#
    • 1...Sh3
      • 2.Qxf3#
  • Tries
    • 1.Sxh6?
      • 1...Se2
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qxf3#
      • 1...d3!
    • 1.Qh4+?
      • 1...Bf4
        • 2.Sg5#
        • 2.Qh7#
      • 1...Rf4!
  • Keys
    • 1.Bf4!
      • 1...Kxf4
        • 2.Qh4#
      • 1...Bxf4
        • 2.Qh7#
      • 1...Bxg7
        • 2.Sg5#
      • 1...exf4
        • 2.Re8#
      • 1...d3
        • 2.Ra4#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Se2
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);OGATE::QAB(A)
    • B(f);N_GUARD::S(E),XB(f)
    • B(f);N_GUARD,XS(F)::S(E)
    • S(a);N_GUARD::QAB1(A),XR(b)
  • Tries
    • Try
      • S(E);XB(f)
      • Vars
        • S(a);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,N_PINR(b)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • B(C);
    • Vars
      • K(d);N_SPINR(b),OGATEB,P-FLIGHT,XB(C)::QAR2(A)
      • B(f);OGATE,SBLOCK,XB(C)::QAB(A)
      • B(f);N_GUARD,XS(F)::S(E)
      • P(e);OGATEB,SBLOCK,XB(C)::R(G)
      • P(c);OGATEB,SBLOCK::R(B)
      • B(f);N_GUARD::S(E),XB(f)
      • S(a);N_GUARD::QAB1(A),XR(b)
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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).