MESON Chess Problem Database

Problem Display
PID: 182515 (4Nk1q/R1p1RP1p/7N/8/5Q2/6BK/8/8 w - - 0 1)

Greenwood, William M

British Chess Magazine, 1912

4Nk1q/R1p1RP1p/7N/8/5Q2/6BK/8/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe7
      • 2.Qd6#
    • 1...Qg8
      • 2.fxg8S#
  • Keys
    • 1.Sg7!
      • 1...Kxe7
        • 2.Qd6#
      • 1...Kxg7
        • 2.f8S#
      • 1...Qxg7
        • 2.Re8#
      • 1...Qg8
        • 2.fxg8S#
      • 1...c5
        • 2.Se6#
      • 1...c6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P_SPINP(a),S_FLIGHT,XR(F)::QAB1(C)
    • Q(d);OGATE::PXQ(d)=S
  • Actual
    • S(H);
    • Vars
      • K(c);OGATEB,P_SPINP(a),S_FLIGHT,XR(F)::QAB1(C)
      • K(c);OGATE,S_FLIGHT,XS(H)::P=S
      • Q(d);SBLOCK,XS(H)::R1(F)
      • Q(d);OGATE::PXQ(d)=S
      • P(a);::S(H)
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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).