MESON Chess Problem Database

Problem Display
PID: 57142 (3r4/3p4/1p6/4N2Q/1B1krb1n/1B1qp1N1/4P3/5bK1 w - - 0 1)

Borders, Reginald W

Comm., Brisbane Courier, 1917

3r4/3p4/1p6/4N2Q/1B1krb1n/1B1qp1N1/4P3/5bK1

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sf5
      • 2.Sf3#
    • 1...Sg6
      • 2.Sf3#
    • 1...d5
      • 2.Sc6#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Sf5+?
      • 1...Sxf5
        • 2.Sf3#
      • 1...Kxe5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qd6#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Qg7#
      • 1...Qxb3
        • 2.Qxe4#
      • 1...Rxe5
        • 2.Qxd3#
      • 1...Bxe5
        • 2.Qxb6#
      • 1...Sxg6
        • 2.Sf3#
      • 1...Qc4
        • 2.Qxe4#
      • 1...Qb5
        • 2.Qxe4#
      • 1...Sf5
        • 2.Sf3#
      • 1...d5
        • 2.Sc6#
      • 1...d6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(g);N_GUARD::S(F)
    • S(g);CHECK,N_GUARD::S(F),XS(g)
    • P(i);N_GUARD::S(F)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(g);XS(D)::S(F)
      • Refutation
        • K(d);S_FLIGHT,XS(F)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G)
    • Vars
      • S(g);CHECK,N_GUARD::S(F),XS(g)
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB(G)
      • Q(b);N_GUARD,XB(C)::QAR1(G),XR(e)
      • R(e);OGATE,SBLOCK,XS(F)::QAR1(G),XQ(b)
      • B(f);SBLOCK,XS(F)::QAB(G),XP(h)
      • S(g);N_GUARD,XQ(G)::S(F)
      • Q(b);N_GUARD::QAR1(G),XR(e)
      • S(g);N_GUARD::S(F)
      • P(i);N_GUARD::S(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).