MESON Chess Problem Database

Problem Display
PID: 193699 (8/2N5/8/8/kP6/2r5/NKP5/2Q5 w - - 0 1)

Wurzburg, Otto

Pittsburgh Gazette-Times, 1915

8/2N5/8/8/kP6/2r5/NKP5/2Q5

#2

6 + 2

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2+
      • 2.Qxc2#
    • 1...Rb3+
      • 2.cxb3#
  • Keys
    • 1.Qd1!
      • 1...Rxc2+
        • 2.Qxc2#
      • 1...Rb3+
        • 2.cxb3#
      • 1...Rxc7
        • 2.c4#
      • 1...Rc5
        • 2.c3#
        • 2.c4#
      • 1...Ra3
        • 2.Qd7#
      • 1...Rd3
        • 2.cxd3#
      • 1...Re3
        • 2.Qd7#
        • 2.c3#
      • 1...Rf3
        • 2.Qd7#
        • 2.c3#
      • 1...Rg3
        • 2.Qd7#
        • 2.c3#
      • 1...Rh3
        • 2.Qd7#
        • 2.c3#
      • 1...Rc4
        • 2.c3#
      • 1...Rc6
        • 2.c3#
        • 2.c4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,XP(D)::QAB(A),XR(a)
    • R(a);CHECK,OGATE::P(D),XR(a)
  • Actual
    • Q(A);
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAB(A),XR(a)
      • R(a);CHECK,OGATE::P(D),XR(a)
      • R(a);OGATE,XS(F)::QAB(A)+P(D)
      • R(a);N_GUARD::QAB(A)
      • R(a);OGATE::QAB(A)+P(D),XR(a)
      • R(a);OGATE::QAB(A)+P(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).