MESON Chess Problem Database

Problem Display
PID: 199978 (kr6/rpp5/8/2Q5/4B3/P4K2/1R6/8 w - - 0 1)

Daubler, Heinz

Der neue Tag (Weiden)/Amberger Zeitung, 2001

(First published on Sat Jun 9 2001)

kr6/rpp5/8/2Q5/4B3/P4K2/1R6/8

#2

5 + 5

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa3+
      • 2.Qxa3#
    • 1...Ra5
      • 2.Qxa5#
    • 1...Rf8+
      • 2.Qxf8#
  • Keys
    • 1.Rxb7!
      • threat
        • 2.Rxa7#
        • 2.Qxa7#
      • 1...Rxa3+
        • 2.Qxa3#
      • 1...Rf8+
        • 2.Qxf8#
      • 1...Raxb7
        • 2.Qa5#
      • 1...Rbxb7
        • 2.Qf8#
      • 1...Ra4
        • 2.Ra7#
      • 1...Ra5
        • 2.Ra7#
        • 2.Qxa5#
      • 1...Ra6
        • 2.Ra7#
      • 1...Rc8
        • 2.Qxa7#
      • 1...Rd8
        • 2.Qxa7#
      • 1...Re8
        • 2.Qxa7#
      • 1...Rg8
        • 2.Qxa7#
      • 1...Rh8
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • R(a);CHECK,OGATE,XP(B)::QAR(E),XR(a)
    • R(a);OGATEB::QAR(E),XR(a)
    • R(e);CHECK,OGATEB::QAR(E),XR(e)
  • Actual
    • R(A);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • R(a);CHECK,OGATE,XP(B)::QAR(E),XR(a)
      • R(e);CHECK,OGATEB::QAR(E),XR(e)
      • R(a);OGATEB,P_SPINR(a),XR(A)::QAR(E)
      • R(e);OGATEB,P_SPINR(e),XR(A)::QAR(E)
      • R(a);::B(D)+R(A),DCHECK
      • R(e);::QAR1(E),XR(a)
      • R(e);SBLOCK::QAR1(E),XR(a)
HTML5 logo

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).