MESON Chess Problem Database

Problem Display
PID: 9477 (8/p5p1/k7/rq1Q2K1/N7/5P2/6R1/5B2 w - - 0 1)

von Holzhausen, Walther Freiherr

Deutsches Wochenschach, 1904

8/p5p1/k7/rq1Q2K1/N7/5P2/6R1/5B2

#2

6 + 5

1842 The White King 1914
3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa4
      • 2.Qxb5#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Qc6#
      • 1...Rxa4
        • 2.Qxb5#
      • 1...Qd3+!
  • Keys
    • 1.Kh5!
      • threat
        • 2.Rg6#
      • 1...g6+
        • 2.Rxg6#
      • 1...Rxa4
        • 2.Qxb5#
      • 1...g5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,XS(D)::QAB1(E),XQ(b)
  • Tries
    • Try
      • K(F);N_SPINQ(E),P-FLIGHT
      • Threat
        • QAR2(E)
      • Vars
        • R(a);N_GUARD,XS(D)::QAB1(E),XQ(b)
      • Refutation
        • Q(b);CHECK
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • R(B)
    • Vars
      • P(e);CHECK::R(B),XP(e)
      • R(a);N_GUARD,XS(D)::QAB1(E),XQ(b)
      • P(e);N_PINQ(E)::QAR2(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).