MESON Chess Problem Database

Problem Display
PID: 174994 (r2k2Nn/3Pp2R/1P6/3Q4/1r3p2/qp2B2K/R7/8 w - - 0 1)

Williams, Philip Hamilton

San Francisco Chronicle, 1901

r2k2Nn/3Pp2R/1P6/3Q4/1r3p2/qp2B2K/R7/8

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Rxa8#
    • 1...Rxb6
      • 2.Bxb6#
    • 1...e6
      • 2.Qg5#
  • Tries
    • 1.Rxe7?
      • threat
        • 2.Re8#
      • 1...Rxb6
        • 2.Bxb6#
      • 1...Re4!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Rxh8#
      • 1...Rxb6
        • 2.Bxb6#
      • 1...Qb2
        • 2.Rxa8#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...e5
        • 2.Qg8#
      • 1...e6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);OGATE::R(A),XR(f)
    • R(c);OGATE,XP(E)::B(B),XR(c)
    • P(e);OGATEB::QAB(D)
  • Tries
    • Try
      • R(G);XP(e)
      • Threat
        • R1(G)
      • Vars
        • R(c);OGATE,XP(E)::B(B),XR(c)
      • Refutation
        • R(c);
  • Actual
    • S(H);
    • Threat
      • R(G),XS(h)
    • Vars
      • R(c);OGATE,XP(E)::B(B),XR(c)
      • Q(a);OGATE::R(A),XR(f)
      • S(h);N_GUARD::S(H)
      • S(h);N_GUARD::S(H),XS(h)
      • P(e);::QAR(D)
      • P(e);OGATEB::QAB(D)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).