MESON Chess Problem Database

Problem Display
PID: 208865 (1n1N1nr1/1K4bQ/3B4/3p4/2pkp3/3p4/3P4/R7 w - - 0 1)

Wheeler, Charles Henry

Detroit Free Press, 1876

1n1N1nr1/1K4bQ/3B4/3p4/2pkp3/3p4/3P4/R7

#2

6 + 9

4817 English Mechanic and World of Science 1893
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rh8
      • 2.Qxg7#
    • 1...Sa6
      • 2.Sc6#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sbd7
      • 2.Sc6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sg6
      • 2.Se6#
    • 1...Sfd7
      • 2.Se6#
    • 1...Sxh7
      • 2.Se6#
    • 1...c3
      • 2.Ra4#
    • 1...e3
      • 2.Qh4#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qe3#
      • 1...c3
        • 2.Ra4#
      • 1...e3
        • 2.Qg4#
        • 2.Qxe3#
        • 2.Qh4#
      • 1...Bh6!
    • 1.Qh6?
      • threat
        • 2.Qe3#
      • 1...c3
        • 2.Ra4#
      • 1...e3
        • 2.Qxe3#
        • 2.Qf4#
        • 2.Qh4#
      • 1...Bxh6!
  • Keys
    • 1.Ka8!
      • 1...Sxh7
        • 2.Se6#
      • 1...c3
        • 2.Ra4#
      • 1...Be5
        • 2.Qa7#
      • 1...Rh8
        • 2.Qxg7#
      • 1...Bf6
        • 2.Qa7#
      • 1...Bh6
        • 2.Qa7#
      • 1...Bh8
        • 2.Qa7#
      • 1...Sa6
        • 2.Sc6#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sbd7
        • 2.Sc6#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sg6
        • 2.Se6#
      • 1...Sfd7
        • 2.Se6#
      • 1...e3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(i);N_GUARD::QAB(E),XB(f)
    • S(g);N_GUARD::S(F)
    • S(g);N_GUARD::S(F),XS(g)
    • S(h);N_GUARD::S(F),XS(h)
    • S(h);N_GUARD::S(F)
    • S(h);N_GUARD,XQ(E)::S(F)
    • P(b);OGATEB::R(A)
    • P(d);OGATEB::QAR(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • P(b);OGATEB::R(A)
      • Refutation
        • B(f);
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • P(b);OGATEB::R(A)
      • Refutation
        • B(f);XQ(E)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • S(h);N_GUARD,XQ(E)::S(F)
      • P(b);OGATEB::R(A)
      • B(f);OGATE::QAB(E)
      • R(i);N_GUARD::QAB(E),XB(f)
      • S(g);N_GUARD::S(F)
      • S(g);N_GUARD::S(F),XS(g)
      • S(h);N_GUARD::S(F),XS(h)
      • S(h);N_GUARD::S(F)
      • P(d);OGATEB::QAR(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).