MESON Chess Problem Database

Problem Display
PID: 272864 (8/5B1N/1N6/4pk1P/KQ4p1/2P1r1P1/3n4/8 w - - 0 1)

Winter, Rudolf

Die Schwalbe, 1932

8/5B1N/1N6/4pk1P/KQ4p1/2P1r1P1/3n4/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qa5#
      • 2.Qc5#
      • 2.Qb5#
  • Tries
    • 1.Sc8?
      • threat
        • 2.Sd6#
        • 2.Se7#
      • 1...e4
        • 2.Qa5#
        • 2.Qc5#
        • 2.Qb5#
      • 1...Rd3
        • 2.Se7#
      • 1...Se4
        • 2.Se7#
      • 1...Sc4!
    • 1.Qc4?
      • threat
        • 2.Be6#
        • 2.Bg6#
      • 1...e4
        • 2.Qb5#
        • 2.Qd5#
        • 2.Qe6#
        • 2.Qc5#
      • 1...Sxc4!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Bd5#
      • 1...Re4+
        • 2.Bc4#
      • 1...Ke4
        • 2.Bg6#
      • 1...Se4
        • 2.Qc8#
      • 1...e4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::S(F)
        • S(a);::S(F)
      • Refutation
        • S(a);
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)+B(G)
    • Vars
      • R(b);CHECK,SBLOCK::QAR(D)+B(G)
      • K(e);N_GUARD,S_FLIGHT::B(G)
      • S(a);SBLOCK::QAB(D)
      • P(d);OGATEB,SBLOCK::QAR(D)
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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).