MESON Chess Problem Database

Problem Display
PID: 214477 (8/8/8/8/Bn4N1/P1kPP1p1/3RKn2/q3b1Q1 w - - 0 1)

Gibson, Henry

Australasian (The), 1877

8/8/8/8/Bn4N1/P1kPP1p1/3RKn2/q3b1Q1

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Qxa1#
    • 1...Sa2
      • 2.Rc2#
    • 1...Sc2
      • 2.Rxc2#
    • 1...Sxd3
      • 2.Rc2#
    • 1...Sd5
      • 2.Rc2#
    • 1...Sa6
      • 2.Rc2#
    • 1...Sc6
      • 2.Rc2#
  • Keys
    • 1.Sxf2!
      • threat
        • 2.Se4#
      • 1...Qd1+
        • 2.Sxd1#
      • 1...Bxd2
        • 2.Qxa1#
      • 1...Bxf2
        • 2.Qxa1#
      • 1...Sxd3
        • 2.Rc2#
      • 1...gxf2
        • 2.Qg7#
      • 1...Sc2
        • 2.Rxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(b);OGATE,XR(B)::QAB(A),XQ(a)
    • S(f);N_GUARD::R1(B)
    • S(f);N_GUARD::R1(B),XS(f)
    • S(f);N_GUARD,XP(E)::R1(B)
  • Actual
    • S(H);XS(c)
    • Threat
      • S(H)
    • Vars
      • Q(a);CHECK,N_GUARD::S(H),XQ(a)
      • B(b);OGATE,XR(B)::QAB(A),XQ(a)
      • B(b);OGATE,XS(H)::QAB(A),XQ(a)
      • S(f);N_GUARD,XP(E)::R1(B)
      • P(e);OGATE,XS(H)::QAB(A)
      • S(f);N_GUARD::R1(B),XS(f)
HTML5 logo

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).