MESON Chess Problem Database

Problem Display
PID: 208197 (3Q1B2/p5p1/P1b3pq/1p2p3/1Nk1N3/2P5/2K5/2n5 w - - 0 1)

Huggins, Colonel AZ

New York Clipper, 1875

3Q1B2/p5p1/P1b3pq/1p2p3/1Nk1N3/2P5/2K5/2n5

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2+
      • 2.Sxd2#
    • 1...Qh1
      • 2.Sd2#
    • 1...Qh3
      • 2.Sd2#
    • 1...Qh4
      • 2.Sd2#
    • 1...Qh5
      • 2.Sd2#
    • 1...Qh7
      • 2.Sd2#
    • 1...Qh8
      • 2.Sd2#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be8
      • 2.Qd5#
    • 1...Sa2
      • 2.Qd3#
    • 1...Se2
      • 2.Qd3#
    • 1...Sb3
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...g5
      • 2.Sd2#
  • Keys
    • 1.Qh4!
      • threat
        • 2.Sd2#
      • 1...Qd2+
        • 2.Sxd2#
      • 1...Bxe4+
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(g);CHECK,N_GUARD::S(D),XQ(g)
    • Q(g);N_GUARD::S(D)
    • B(e);N_GUARD::QAB1(F),XB(e)
    • B(e);N_GUARD::QAB1(F)
    • S(a);N_GUARD::QAB1(F)
    • S(a);N_GUARD::QAB1(F),XS(a)
    • P(f);S_CUTQ(g)::S(D)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(D),DCHECK
    • Vars
      • Q(g);CHECK::QAR(F)+S(D),DCHECK,XQ(g)
      • B(e);CHECK,OGATE,P_SPINB(e),XS(D)::QAR2(F),XB(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).