MESON Chess Problem Database

Problem Display
PID: 219078 (K4B2/5B2/1pN5/pk6/1N6/8/P7/7Q w - - 0 1)

Nix, John Gilbert

Baltimore American and Commercial Advertiser, 1882

K4B2/5B2/1pN5/pk6/1N6/8/P7/7Q

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Qd5#
      • 2.Qf1#
      • 2.Qh5#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Sd4#
        • 2.Sa7#
        • 2.Qd5#
        • 2.Qf1#
        • 2.Qh5#
        • 2.a4#
      • 1...a4
        • 2.Qd5#
        • 2.Qf1#
        • 2.Qh5#
      • 1...axb4!
    • 1.Qd1?
      • threat
        • 2.Sd4#
        • 2.Sa7#
        • 2.a4#
      • 1...a4
        • 2.Qe2#
        • 2.Qh5#
        • 2.Qf1#
        • 2.Qd3#
        • 2.Qd5#
      • 1...axb4!
  • Keys
    • 1.Sd5!
      • 1...Ka4
        • 2.Sc3#
      • 1...Kc4
        • 2.Qf1#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Be8#
      • 1...a4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(6)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • P(a);XS(C)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::QAB(A)
      • K(b);OGATEB,S_FLIGHT,XS(D)::B(E)
      • P(a);SBLOCK::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).