MESON Chess Problem Database

Problem Display
PID: 228285 (4k1rb/4P2r/p5np/PbB1pQ1B/2n1N3/8/7K/1R6 w - - 0 1)

Rudolph, William E

Tidskrift for Schack, 1911

4k1rb/4P2r/p5np/PbB1pQ1B/2n1N3/8/7K/1R6

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qc8#
    • 1...Rf8
      • 2.exf8Q#
      • 2.exf8R#
    • 1...Ba4
      • 2.Rb8#
    • 1...Bc6
      • 2.Rb8#
    • 1...Bg7
      • 2.Bxg6#
  • Tries
    • 1.Bxg6+?
      • 1...Rf7
        • 2.Bxf7#
        • 2.Qc8#
      • 1...Rxg6!
  • Keys
    • 1.Qe6!
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Sxa5
        • 2.Sd6#
      • 1...Rf7
        • 2.Qc8#
      • 1...Rhg7
        • 2.Sf6#
      • 1...Rgg7
        • 2.Sf6#
      • 1...Rf8
        • 2.exf8Q#
        • 2.exf8R#
      • 1...Ba4
        • 2.Rb8#
      • 1...Bc6
        • 2.Rb8#
      • 1...Bd7
        • 2.Qxg8#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Bg7
        • 2.Bxg6#
      • 1...Sb2
        • 2.Sd6#
      • 1...Sd2
        • 2.Sd6#
      • 1...Sa3
        • 2.Sd6#
      • 1...Se3
        • 2.Sd6#
      • 1...Sb6
        • 2.Sd6#
      • 1...Sd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(g);N_SPINS(e),SBLOCK::QAR2(F)
    • R(i);OGATE::PXR(i)=Q
    • B(b);OGATE::R(A)
    • B(j);S_CUTR(g),S_CUTR(i)::B(G),XS(e)
  • Tries
    • Try
      • B(G);CHECK,XS(e)
      • Refutation
        • R(i);XB(G)
  • Actual
    • Q(F);
    • Vars
      • R(g);OGATE,P_SPINR(g),XP(H)::QAR1(F),XR(g)
      • S(a);N_GUARD,XP(D)::S(C)
      • R(g);N_SPINS(e),SBLOCK::QAR2(F)
      • R(g);S_CUTB(j)::S(C)
      • R(i);S_CUTB(j)::S(C)
      • R(i);OGATE::PXR(i)=Q
      • B(b);OGATE::R(A)
      • B(b);SBLOCK::QAR2(F),XR(i)
      • B(j);N_GUARD::S(C),XB(j)
      • B(j);S_CUTR(g),S_CUTR(i)::B(G),XS(e)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
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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).