MESON Chess Problem Database

Problem Display
PID: 129790 (2k4r/b2pQ3/1Rp5/3N4/3p3B/8/8/K2n4 w - - 0 1)

Feigl, Maximilian

Deutsche Schachzeitung, 1901

2k4r/b2pQ3/1Rp5/3N4/3p3B/8/8/K2n4

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh4
      • 2.Qf8#
      • 2.Qe8#
    • 1...Rh5
      • 2.Qd8#
      • 2.Qf8#
      • 2.Qe8#
    • 1...Rh6
      • 2.Qd8#
      • 2.Qf8#
      • 2.Qe8#
    • 1...Rh7
      • 2.Qd8#
      • 2.Qf8#
      • 2.Qe8#
    • 1...Rd8
      • 2.Qxd8#
    • 1...Re8
      • 2.Qxe8#
    • 1...Rf8
      • 2.Qxf8#
    • 1...cxd5
      • 2.Qc5#
    • 1...c5
      • 2.Qxc5#
    • 1...d6
      • 2.Qe6#
      • 2.Qb7#
      • 2.Qc7#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qc7#
      • 1...cxd5
        • 2.Qc5#
      • 1...Bb8
        • 2.Rxb8#
        • 2.Qxb8#
      • 1...Bxb6!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qa6#
      • 1...Rxh4
        • 2.Qf8#
      • 1...Bxb6
        • 2.Qa8#
      • 1...cxd5
        • 2.Qc5#
      • 1...d6
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::QAR1(E),XR(g)
    • R(g);N_GUARD::QAR2(E),XR(g)
    • R(g);N_GUARD::QAR(E),XR(g)
    • P(c);OGATEB,XS(C)::QAR(E)
    • P(c);OGATEB::QAR(E),XP(c)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • P(c);OGATEB,XS(C)::QAR(E)
      • Refutation
        • B(d);XR(D)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • R(g);N_GUARD,XB(B)::QAR(E)
      • B(d);OGATE,XR(D)::QAR2(E)
      • P(c);OGATEB,XS(C)::QAR(E)
      • P(e);OGATEB::QAB(E)
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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).