MESON Chess Problem Database

Problem Display
PID: 144468 (1B2R3/1p4pK/1r4p1/2R3p1/2n5/q5p1/bbr4k/4NQ2 w - - 0 1)

Triggs, D

Chess, 1954

1B2R3/1p4pK/1r4p1/2R3p1/2n5/q5p1/bbr4k/4NQ2

#2

6 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Sf3#
    • 1...Qxc5
      • 2.Sf3#
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qa4
      • 2.Sf3#
    • 1...Qa5
      • 2.Sf3#
    • 1...Qa6
      • 2.Sf3#
    • 1...Qa7
      • 2.Sf3#
    • 1...Qa8
      • 2.Sf3#
    • 1...Rc1
      • 2.Re2#
      • 2.Qg2#
    • 1...Re2
      • 2.Rxe2#
    • 1...Rg2
      • 2.Qxg2#
    • 1...Rc3
      • 2.Re2#
      • 2.Qg2#
    • 1...Bb3
      • 2.Sf3#
    • 1...Bc3
      • 2.Sf3#
    • 1...Sd2
      • 2.Re2#
      • 2.Qg2#
    • 1...Se3
      • 2.Sf3#
    • 1...Sa5
      • 2.Rxc2#
  • Keys
    • 1.Rh8!
      • threat
        • 2.Kg8#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Sd2
        • 2.Qg2#
      • 1...Se3
        • 2.Sf3#
      • 1...Sa5
        • 2.Rxc2#
      • 1...Se5
        • 2.Kxg7#
      • 1...Sd6
        • 2.Kxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(e);N_GUARD::S(A)
    • Q(e);N_GUARD,XR(C)::S(A)
    • Q(e);N_GUARD::S(A),XQ(e)
    • Q(e);N_GUARD,SBLOCK::S(A)
    • R(c);N_GUARD::R(F),XR(c)
    • R(c);N_GUARD::QAR1(B),XR(c)
    • B(a);S_CUTQ(e)::S(A)
    • B(b);S_CUTQ(e)::S(A)
    • S(g);S_CUTQ(e)::S(A)
    • S(g);OGATE::R(C),XR(c)
  • Actual
    • R(F);
    • Threat
      • R(F)+K(D)
    • Vars
      • Q(e);N_GUARD::S(A),XQ(e)
      • S(g);S_CUTR(c)::QAR1(B)
      • S(g);S_CUTQ(e)::S(A)
      • S(g);OGATE::R(C),XR(c)
      • S(g);N_SPINP(f)::R(F)+K(D),XP(l)
      • S(g);N_SPINP(f)::R(F)+K(D),XP(j)
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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).