MESON Chess Problem Database

Problem Display
PID: 152046 (b4r2/4q2n/2p2N2/4k3/3RN3/3p4/Q6n/b2K1RB1 w - - 0 1)

Rice, William Bayard

Good Companions (February), 1915

b4r2/4q2n/2p2N2/4k3/3RN3/3p4/Q6n/b2K1RB1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sd7#
    • 1...Qb4
      • 2.Sd7#
    • 1...Qc5
      • 2.Sd7#
    • 1...Qe6
      • 2.Qxh2#
    • 1...Qd7
      • 2.Sxd7#
    • 1...Bxd4
      • 2.Bxh2#
    • 1...Sg4
      • 2.Sxg4#
  • Tries
    • 1.Rd5+?
      • 1...Ke6
        • 2.Ra5#
        • 2.Rb5#
        • 2.Rc5#
        • 2.Rdf5#
        • 2.Rg5#
        • 2.Rh5#
      • 1...cxd5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rf5#
      • 1...Qxd6
        • 2.Re4#
      • 1...Qxf6
        • 2.Re1#
      • 1...Rxf6
        • 2.Re1#
      • 1...Bxd4
        • 2.Bxh2#
      • 1...Sxf1
        • 2.Sg4#
      • 1...Sf3
        • 2.Sg4#
      • 1...Qe6
        • 2.Qxh2#
      • 1...Qd7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(f);N_GUARD::S(G)
    • Q(f);SBLOCK::QAB(D),XS(b)
    • Q(f);N_GUARD::S(G),XQ(f)
    • B(a);SBLOCK,XR(E)::B(C),XS(b)
    • S(b);N_GUARD::S(G),XS(b)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • P(e);XR(E)
  • Actual
    • S(F);
    • Threat
      • R1(B)
    • Vars
      • Q(f);SBLOCK,XS(F)::R1(E)
      • Q(f);SBLOCK,XS(G)::R(B)
      • R(i);SBLOCK,XS(G)::R(B)
      • B(a);SBLOCK,XR(E)::B(C),XS(b)
      • S(b);N_GUARD,XR(B)::S(G)
      • S(b);N_GUARD::S(G)
      • Q(f);SBLOCK::QAB(D),XS(b)
      • Q(f);N_GUARD::S(G),XQ(f)
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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).