MESON Chess Problem Database

Problem Display
PID: 9400 (2r5/4PK2/1p1kBp2/1PR5/P7/Qn2P3/8/8 w - - 0 1)

van Dijk, Johannes

HM., La Strategie, 1902

2r5/4PK2/1p1kBp2/1PR5/P7/Qn2P3/8/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.e8S#
    • 1...Rc7
      • 2.Rd5#
    • 1...Rd8
      • 2.exd8Q#
      • 2.exd8R#
    • 1...Rf8+
      • 2.exf8Q#
      • 2.exf8B#
  • Keys
    • 1.Qb2!
      • 1...Rf8+
        • 2.exf8Q#
        • 2.exf8B#
      • 1...Kxc5
        • 2.Qa3#
      • 1...Rxc5
        • 2.e8S#
      • 1...Sxc5
        • 2.Qh2#
      • 1...bxc5
        • 2.Qh2#
      • 1...Rc6
        • 2.Rxc6#
      • 1...Rc7
        • 2.Rd5#
      • 1...Ra8
        • 2.Rc6#
      • 1...Rb8
        • 2.Rc6#
      • 1...Rd8
        • 2.Rc6#
      • 1...Re8
        • 2.Rc6#
      • 1...Rg8
        • 2.Rc6#
      • 1...Rh8
        • 2.Rc6#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa5
        • 2.Qd4#
      • 1...f5
        • 2.Qe5#

This is a version of 121276

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
    • R(e);N_GUARD::P=S
    • R(e);P_PINP(G),SBLOCK::QAB(A)+R(E),DCHECK
    • R(e);OGATE::PXR(e)=Q
    • R(e);CHECK,OGATE::PXR(e)=Q
  • Actual
    • Q(A);
    • Vars
      • R(e);CHECK,OGATE::PXR(e)=Q
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • R(e);N_GUARD,SBLOCK,XR(E)::P=S
      • S(a);SBLOCK,XR(E)::QAB(A)
      • P(b);SBLOCK,XR(E)::QAB(A)
      • R(e);N_GUARD::R1(E),XR(e)
      • R(e);P_PINP(G),SBLOCK::R1(E)
      • R(e);N_GUARD::R1(E)
      • S(a);N_GUARD::QAR2(A)
      • S(a);N_GUARD::QAR2(A),XS(a)
      • P(d);N_GUARD::QAB1(A)
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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).