MESON Chess Problem Database

Problem Display
PID: 244847 (N5Nb/8/1Qnrn3/1p1k4/1Pr2P2/R4P2/4P2K/8 w - - 0 1)

Gold, Samuel

Wiener Hausfrauen-Zeitung, 1891

N5Nb/8/1Qnrn3/1p1k4/1Pr2P2/R4P2/4P2K/8

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.e4#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Sxb4
      • 2.Se7#
    • 1...Scd4
      • 2.Se7#
      • 2.e4#
    • 1...Sa5
      • 2.Se7#
    • 1...Se5
      • 2.Se7#
    • 1...Sa7
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...Sb8
      • 2.Se7#
    • 1...Scd8
      • 2.Se7#
    • 1...Sed4
      • 2.Sc7#
    • 1...Sg5
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sg7
      • 2.Sc7#
    • 1...Sed8
      • 2.Sc7#
    • 1...Sf8
      • 2.Sc7#
  • Tries
    • 1.Rd3+?
      • 1...Bd4
        • 2.Sf6#
        • 2.e4#
      • 1...Scd4
        • 2.Se7#
        • 2.e4#
      • 1...Sed4
        • 2.Sc7#
      • 1...Rd4!
  • Keys
    • 1.Qd4+!
      • 1...Kxd4
        • 2.Rd3#
      • 1...Rxd4
        • 2.Sb6#
      • 1...Bxd4
        • 2.e4#
      • 1...Scxd4
        • 2.Se7#
      • 1...Sexd4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • B(g);S_CUTR(a)::P(A)
    • B(g);N_GUARD::S(I),XB(g)
    • S(d);N_GUARD,XP(E)::S(I)
    • S(d);N_GUARD::S(I)
    • S(d);N_GUARD::S(I),XS(d)
    • S(f);N_GUARD::S(H)
    • S(f);N_GUARD::S(H),XS(f)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(f);P_SPINS(f)::S(H)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • Q(G);CHECK
    • Vars
      • K(c);P-FLIGHT,XQ(G)::R1(C)
      • R(a);SBLOCK,XQ(G)::S(H)
      • B(g);SBLOCK,XQ(G)::P(A)
      • S(d);SBLOCK,XQ(G)::S(I)
      • S(f);SBLOCK,XQ(G)::S(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).