MESON Chess Problem Database

Problem Display
PID: 226612 (1B6/1K5p/1pR2n1r/3k1p1B/1PNqR3/N2p2nb/1p2ppPb/8 w - - 0 1)

Smith, James Alfred John

British Chess Magazine, 1931

1B6/1K5p/1pR2n1r/3k1p1B/1PNqR3/N2p2nb/1p2ppPb/8

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Bf3#
    • 1...Qxe4
      • 2.Rd6#
    • 1...Sgxe4
      • 2.Bf7#
    • 1...fxe4
      • 2.Rd6#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Rxd4#
      • 1...Kxe4
        • 2.Bf3#
      • 1...Qxc4
        • 2.Re5#
      • 1...Qxe4
        • 2.Sxb6#
      • 1...Sgxe4
        • 2.Bf7#
      • 1...Sfxe4
        • 2.Sc7#
      • 1...fxe4
        • 2.Sc7#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Qe3
        • 2.Sc3#
      • 1...Qc5
        • 2.Sc3#
      • 1...Qe5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(i);OGATEB,S_FLIGHT,XR(E)::B(F)
    • Q(h);SBLOCK,XR(E)::R1(G)
    • S(f);SBLOCK,XR(E)::B(F)
    • P(j);SBLOCK,XR(E)::R1(G)
  • Actual
    • S(B);
    • Threat
      • R1(E),XQ(h)
    • Vars
      • K(i);OGATEB,S_FLIGHT,XR(E)::B(F)
      • Q(h);N_GUARD,XS(D)::R1(E)
      • Q(h);N_GUARD,SBLOCK,XR(E)::S(D),XP(k)
      • S(f);SBLOCK,XR(E)::B(F)
      • S(l);SBLOCK,XR(E)::S(B)
      • P(j);SBLOCK,XR(E)::S(B)
      • Q(h);N_GUARD::S(B),XQ(h)
      • Q(h);N_GUARD::S(B)
      • Q(h);N_GUARD::R1(E),XQ(h)
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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).