MESON Chess Problem Database

Problem Display
PID: 175800 (3rkr1b/3p1pR1/4NP2/1n6/8/8/1K4Q1/8 w - - 0 1)

Seymour, Robert Hoe

Philadelphia Times, 1898

3rkr1b/3p1pR1/4NP2/1n6/8/8/1K4Q1/8

#2

5 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxa8#
    • 1...Rg8
      • 2.Rxg8#
    • 1...Bxg7
      • 2.Sxg7#
    • 1...Sa3
      • 2.Sc7#
    • 1...Sc3
      • 2.Sc7#
    • 1...Sd4
      • 2.Sc7#
    • 1...Sd6
      • 2.Sc7#
    • 1...Sa7
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...fxe6
      • 2.Re7#
  • Keys
    • 1.Qb7!
      • 1...Bxg7
        • 2.Sxg7#
      • 1...dxe6
        • 2.Qe7#
      • 1...fxe6
        • 2.Re7#
      • 1...Ra8
        • 2.Qxa8#
      • 1...Rb8
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxc8#
      • 1...Rg8
        • 2.Rxg8#
      • 1...Sa3
        • 2.Sc7#
      • 1...Sc3
        • 2.Sc7#
      • 1...Sd4
        • 2.Sc7#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sa7
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);OGATEB::QAR(B),XR(d)
    • R(f);OGATEB::R(E),XR(f)
    • B(g);P_PINP(D),XR(E)::S(C),XB(g)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • P(c);OGATE,XS(C)::R1(E)
  • Actual
    • Q(B);
    • Vars
      • B(g);P_PINP(D),XR(E)::S(C),XB(g)
      • P(b);OGATE,XS(C)::QAR1(B)
      • P(c);OGATE,XS(C)::R1(E)
      • R(d);OGATEB::QAR(B),XR(d)
      • R(d);OGATEB::QAR2(B),XR(d)
      • R(f);OGATEB::R(E),XR(f)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
      • P(b);OGATE::QAR1(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).