MESON Chess Problem Database

Problem Display
PID: 185911 (2Q5/8/2pK1p2/3n4/2pk1B2/3N2r1/1P3P1b/3R4 w - - 0 1)

Broadribb, W

Chess, 1957

2Q5/8/2pK1p2/3n4/2pk1B2/3N2r1/1P3P1b/3R4

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.Sc5#
    • 1...Rg4
      • 2.Sc5#
    • 1...Rg5
      • 2.Sc5#
    • 1...Rg6
      • 2.Sc5#
    • 1...Rg7
      • 2.Sc5#
    • 1...Rg8
      • 2.Sc5#
  • Keys
    • 1.Qg4!
      • threat
        • 2.Be3#
        • 2.Be5#
      • 1...Ke4
        • 2.Sc5#
      • 1...Rxd3
        • 2.Be5#
      • 1...Rxg4
        • 2.Sc5#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Rg1
        • 2.Be5#
      • 1...Rg2
        • 2.Sc5#
        • 2.Be5#
      • 1...Re3
        • 2.Be5#
      • 1...Rf3
        • 2.Be5#
      • 1...Rh3
        • 2.Be5#
      • 1...Se3
        • 2.Bxe3#
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD,P_PINB(E)::R(A)+S(D)
  • Actual
    • Q(G);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P-FLIGHT::S(D)
      • R(b);P_PINB(E),P_SPINR(b),XS(D)::QAR(G)+B(E),DCHECK
      • R(b);N_GUARD,P_PINB(E),XQ(G)::R(A)+S(D)
      • S(e);OGATE,P_SPINS(e),XB(E)::QAR2(G),XS(e)
      • R(b);P_PINB(E)::QAR(G)+B(E),DCHECK
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).