MESON Chess Problem Database

Problem Display
PID: 76411 (5rNN/4p3/1B3p2/1R3Pkp/7p/4P2P/3Qn2K/8 w - - 0 1)

Cafferata, Louis William

The Tablet, 1928

5rNN/4p3/1B3p2/1R3Pkp/7p/4P2P/3Qn2K/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Sxf7#
    • 1...Ra8
      • 2.Sf7#
    • 1...Rb8
      • 2.Sf7#
    • 1...Rc8
      • 2.Sf7#
    • 1...Rd8
      • 2.Sf7#
    • 1...Re8
      • 2.Sf7#
    • 1...Rxg8
      • 2.Sf7#
    • 1...Sc1
      • 2.Qg2#
      • 2.e4#
    • 1...Sg1
      • 2.Qg2#
      • 2.e4#
    • 1...Sc3
      • 2.Qg2#
      • 2.e4#
    • 1...Sg3
      • 2.e4#
    • 1...Sd4
      • 2.Qg2#
      • 2.exd4#
      • 2.e4#
    • 1...Sf4
      • 2.exf4#
  • Tries
    • 1.Qxe2?
      • threat
        • 2.Qg2#
      • 1...Rxg8
        • 2.Sf7#
      • 1...e5!
  • Keys
    • 1.Bd8!
      • 1...Rxd8
        • 2.Sf7#
      • 1...Rxg8
        • 2.Sf7#
      • 1...e5
        • 2.fxe5 ep#
      • 1...e6
        • 2.fxe6#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Re8
        • 2.Sf7#
      • 1...Sc1
        • 2.Qg2#
        • 2.e4#
      • 1...Sg1
        • 2.Qg2#
        • 2.e4#
      • 1...Sc3
        • 2.Qg2#
        • 2.e4#
      • 1...Sg3
        • 2.e4#
      • 1...Sd4
        • 2.Qg2#
        • 2.exd4#
        • 2.e4#
      • 1...Sf4
        • 2.exf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD::S(I),XR(g)
    • R(g);N_GUARD::S(I)
    • R(g);N_GUARD,XS(H)::S(I)
    • S(a);N_GUARD::QAB(A)+P(C)
    • S(a);OGATE::P(C),XS(a)
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • QAR(A)
      • Vars
        • R(g);N_GUARD,XS(H)::S(I)
      • Refutation
        • P(f);
  • Actual
    • B(G);
    • Vars
      • R(g);N_GUARD,XB(G)::S(I)
      • R(g);N_GUARD,XS(H)::S(I)
      • P(f);OGATE,P_SPINP(e)::R(E)+P(F),XP(f),EP
      • P(f);OGATE,P_SPINP(e)::R(E)+P(F),XP(f)
      • R(g);N_GUARD::S(I),XR(g)
      • R(g);N_GUARD::S(I)
      • S(a);N_GUARD::QAB(A)+P(C)
      • S(a);OGATE::P(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).