MESON Chess Problem Database

Problem Display
PID: 193641 (1B6/1n4R1/1p3N2/1Bk2r2/P4p2/3p4/1KNP3p/3Q3n w - - 0 1)

Janet, Frank

2nd HM., Pittsburgh Gazette-Times, 1915

1B6/1n4R1/1p3N2/1Bk2r2/P4p2/3p4/1KNP3p/3Q3n

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Se4#
    • 1...Rg5
      • 2.Rxg5#
    • 1...Rh5
      • 2.Qxh5#
    • 1...Sd6
      • 2.Rc7#
  • Tries
    • 1.Bd6+?
      • 1...Sxd6
        • 2.Rc7#
      • 1...Kxd6!
    • 1.Qf3?
      • threat
        • 2.Sd7#
        • 2.Qc6#
      • 1...dxc2
        • 2.Qc3#
      • 1...Rd5
        • 2.Se4#
        • 2.Qxd5#
      • 1...Sa5
        • 2.Sd7#
      • 1...Sd8
        • 2.Sd7#
      • 1...Rxf6!
  • Keys
    • 1.Qe2!
      • 1...Rxf6
        • 2.Qe5#
      • 1...dxc2
        • 2.Qc4#
      • 1...dxe2
        • 2.d4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rd5
        • 2.Se4#
      • 1...Rg5
        • 2.Rxg5#
      • 1...Rh5
        • 2.Qxh5#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Sa5
        • 2.Qe7#
      • 1...Sd6
        • 2.Rc7#
      • 1...Sd8
        • 2.Qe7#
      • 1...f3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::S(G)
    • R(f);OGATEB::R(H),XR(f)
    • R(f);OGATEB::QAR(A),XR(f)
    • S(h);SBLOCK::R(H)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(h);SBLOCK,XB(I)::R(H)
      • Refutation
        • K(e);S_FLIGHT,XB(I)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATE,XS(C)::QAR2(A)
        • S(h);::S(G)
      • Refutation
        • R(f);XS(G)
  • Actual
    • Q(A);
    • Vars
      • R(f);N_GUARD,XS(G)::QAR2(A)
      • P(c);OGATE,XS(C)::QAR1(A)
      • P(c);OGATE,XQ(A)::P(D)
      • R(f);N_GUARD::QAR2(A),XR(f)
      • R(f);SBLOCK::S(G)
      • R(f);OGATEB::R(H),XR(f)
      • R(f);OGATEB::QAR(A),XR(f)
      • S(a);N_GUARD::QAB(A),XS(a)
      • S(a);N_GUARD::QAB(A)
      • S(h);N_GUARD::QAB(A)
      • S(h);SBLOCK::R(H)
      • P(d);N_GUARD::QAB(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).