MESON Chess Problem Database

Problem Display
PID: 2782 (8/2N1p3/2nN2Q1/4k1P1/8/4K2b/8/5q2 w - - 0 1)

Wescott, JH

Source?, 0000

8/2N1p3/2nN2Q1/4k1P1/8/4K2b/8/5q2

#2

5 + 5

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qb5
      • 2.Sf7#
    • 1...Qa6
      • 2.Sf7#
    • 1...Qa1
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qb1
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qd1
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qh1
      • 2.Sc4#
      • 2.Sf7#
    • 1...Qf5
      • 2.Sc4#
    • 1...Qf6
      • 2.Sc4#
    • 1...Qf7
      • 2.Sxf7#
    • 1...Qf8
      • 2.Sc4#
    • 1...Bg2
      • 2.Qe6#
    • 1...Bf5
      • 2.Sf7#
    • 1...Be6
      • 2.Qxe6#
    • 1...exd6
      • 2.Qe4#
  • Keys
    • 1.Qf5+!
      • 1...Kxd6
        • 2.Se8#
      • 1...Qxf5
        • 2.Sc4#
      • 1...Bxf5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(C),XQ(a)
    • Q(a);N_GUARD::S(C)
    • B(b);N_GUARD::QAR1(D)
    • B(b);S_CUTQ(a)::S(C)
    • B(b);N_GUARD::QAR1(D),XB(b)
    • P(e);SBLOCK,XS(C)::QAR1(D)
  • Actual
    • Q(D);CHECK
    • Vars
      • K(c);S_FLIGHT,XS(C)::S(E)
      • Q(a);SBLOCK,XQ(D)::S(C)
      • B(b);SBLOCK,XQ(D)::S(C)
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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).