MESON Chess Problem Database

Problem Display
PID: 197764 (2Br4/1p6/2n1N2Q/R2n1P1R/2pNkP2/4r1p1/2P1PbK1/2B5 w - - 0 1)

Shire, David J

The Problemist, 1981

2Br4/1p6/2n1N2Q/R2n1P1R/2pNkP2/4r1p1/2P1PbK1/2B5

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.exf3#
    • 1...Sxf4+
      • 2.Qxf4#
    • 1...Sxd4
      • 2.Sc5#
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sd2#
        • 2.Sc5#
      • 1...Sxf4+
        • 2.Qxf4#
      • 1...Rxe2
        • 2.Seg5#
      • 1...Rxf3
        • 2.exf3#
      • 1...Ra3
        • 2.Seg5#
      • 1...Rb3
        • 2.Seg5#
      • 1...Rc3
        • 2.Seg5#
      • 1...Rd3
        • 2.Seg5#
      • 1...Be1
        • 2.Sc5#
      • 1...Sc3
        • 2.Sfg5#
      • 1...Sdb4
        • 2.Sfg5#
      • 1...Sb6
        • 2.Sfg5#
      • 1...Sf6
        • 2.Sfg5#
      • 1...Sc7
        • 2.Sfg5#
      • 1...Sde7
        • 2.Sfg5#
      • 1...c3
        • 2.Sc5#
      • 1...b6
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::P(C),XR(b)
    • S(f);CHECK,OGATE,XP(F)::QAR1(K),XS(f)
    • S(g);SBLOCK,XS(E)::S(J)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • S(f);CHECK,OGATE,XP(F)::QAR1(K),XS(f)
      • R(b);XP(C)::S(J)
      • R(b);OGATE,XS(E)::P(C),XR(b)
      • R(b);::S(J)
      • B(a);::S(J)
      • S(f);::S(E)
      • P(d);::S(J)
      • P(h);::S(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).