MESON Chess Problem Database

Problem Display
PID: 57211 (4n1bb/n1p1p3/2Bk1P1p/2R1R1N1/4p2q/B5rp/p5P1/K7 w - - 0 1)

Thomson, Robert Gavin

9th Highly Comm., Brisbane Courier, 1918

4n1bb/n1p1p3/2Bk1P1p/2R1R1N1/4p2q/B5rp/p5P1/K7

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Sxe4#
    • 1...Bd5
      • 2.Rexd5#
    • 1...Be6
      • 2.Rxe6#
    • 1...Bf7
      • 2.Sxf7#
    • 1...Bh7
      • 2.Sf7#
      • 2.Red5#
      • 2.Re6#
    • 1...Sxc6
      • 2.Rcd5#
  • Keys
    • 1.f7!
      • threat
        • 2.fxe8S#
      • 1...Bxe5+
        • 2.Rc3#
      • 1...Bxf7
        • 2.Sxf7#
      • 1...Sxc6
        • 2.Rd5#
      • 1...e6
        • 2.f8Q#
        • 2.f8B#
      • 1...Qh5
        • 2.Sxe4#
      • 1...Sf6
        • 2.Re6#
      • 1...Sg7
        • 2.Red5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_GUARD::S(F),XP(d)
    • B(l);N_GUARD::R1(E),XB(l)
    • B(l);N_GUARD::S(F),XB(l)
    • S(h);SBLOCK,XB(G)::B(C)+R(D),DCHECK
  • Actual
    • P(H);P_SPINR(E)
    • Threat
      • PXS(k)=S
    • Vars
      • B(m);CHECK,SBLOCK,XR(E)::B(C)+R(D)
      • B(l);XP(H)::S(F),XB(l)
      • S(h);SBLOCK,XB(G)::B(C)+R(D),DCHECK
      • P(j);::P=Q
      • Q(e);N_GUARD::S(F),XP(d)
      • S(k);N_PINR(E)::R1(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).