MESON Chess Problem Database

Problem Display
PID: 122243 (1n2Q1bK/8/N1R5/q2kP3/4p3/8/2n5/B7 w - - 0 1)

Wheeler, Charles Henry

Checkmate, 1901

1n2Q1bK/8/N1R5/q2kP3/4p3/8/2n5/B7

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sc7#
      • 2.Rc5#
    • 1...Qd2
      • 2.Sc7#
      • 2.Rc5#
    • 1...Qb4
      • 2.Sc7#
    • 1...Qc7
      • 2.Sxc7#
    • 1...Qd8
      • 2.Rc5#
    • 1...Qa2
      • 2.Sc7#
      • 2.Rc5#
    • 1...Qa3
      • 2.Sc7#
    • 1...Qa4
      • 2.Sc7#
      • 2.Rc5#
    • 1...Qb5
      • 2.Sc7#
    • 1...Qc5
      • 2.Rxc5#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
    • 1...Sxa6
      • 2.Qd7#
    • 1...Sxc6
      • 2.Qxg8#
    • 1...Sd7
      • 2.Qxd7#
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qd6#
      • 1...Sxc6
        • 2.Qxg8#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Qb4
        • 2.Sc7#
      • 1...Qc7
        • 2.Sxc7#
      • 1...Qd8
        • 2.Rc5#
      • 1...Qa3
        • 2.Sc7#
      • 1...e3
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::S(C)
    • Q(c);N_GUARD::S(C),XQ(c)
    • Q(c);N_GUARD::R1(D)
    • Q(c);N_GUARD::R1(D),XQ(c)
    • B(f);N_GUARD::QAB1(E),XB(f)
    • B(f);N_GUARD::QAB1(E)
    • S(e);N_GUARD,XS(C)::QAR2(E)
    • S(e);SBLOCK,XR(D)::QAB(E),XB(f)
    • S(e);N_GUARD::QAR2(E),XS(e)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • S(e);SBLOCK,XR(D)::QAB(E),XB(f)
      • Q(c);N_GUARD::R1(D),XQ(c)
      • B(f);N_GUARD::QAB1(E),XB(f)
      • Q(c);N_GUARD::S(C)
      • Q(c);N_GUARD::S(C),XQ(c)
      • Q(c);N_GUARD::R1(D)
      • P(b);OGATEB::QAB(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).