MESON Chess Problem Database

Problem Display
PID: 77875 (1R4rb/4P1B1/K2N1q2/1Bp5/1N3Q2/1PkP1R2/Pp6/nn6 w - - 0 1)

Buchner, Rudolf

Die Schwalbe, 1935

1R4rb/4P1B1/K2N1q2/1Bp5/1N3Q2/1PkP1R2/Pp6/nn6

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sd5#
  • Tries
    • 1.Rf2?
      • threat
        • 2.Sd5#
        • 2.Qc4#
      • 1...cxb4
        • 2.Qc4#
        • 2.Qxf6#
      • 1...Qd4
        • 2.Sd5#
      • 1...c4
        • 2.Qxc4#
      • 1...Sa3
        • 2.Sd5#
      • 1...Sd2!
  • Keys
    • 1.Be8!
      • threat
        • 2.d4#
      • 1...cxb4
        • 2.Rc8#
      • 1...Qd4
        • 2.Se4#
      • 1...Qe5
        • 2.Sb5#
      • 1...Sc2
        • 2.Sd5#
      • 1...Sd2
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::S(E)
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_PINS(I)::S(E)
        • P(e);::QAR1(F),XP(e)
        • S(b);::S(E)
      • Refutation
        • S(b);
  • Actual
    • B(G);
    • Threat
      • R(D)+P(C)
    • Vars
      • P(e);OGATEB,XS(E)::R(L)
      • Q(f);N_PINS(I)::S(I)
      • S(a);SBLOCK::S(E)
      • S(b);SBLOCK::QAB(F),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).