Problem Display
PID: 158773 (R7/3Q3N/4r1Pk/6R1/4p3/5B2/bb6/7K w - - 0 1)

Charlick, Arthur Robert Baker

British Chess Magazine 13. Ty., 1906-1907

R7/3Q3N/4r1Pk/6R1/4p3/5B2/bb6/7K

#2

7 + 5


SOLUTION


  • SOUND
  • Sets
    • 1...Rxg6
      • 2.Rh5#
  • Tries
    • 1.Rg8?
      • threat
        • 2.Rh5#
      • 1...Re5
        • 2.Qh3#
        • 2.Qg7#
      • 1...Bg7
        • 2.Qxg7#
      • 1...exf3!
    • 1.Qf7?
      • threat
        • 2.Rh5#
      • 1...Re5
        • 2.Qf8#
      • 1...exf3!
  • Keys
    • 1.g7!
      • threat
        • 2.g8S#
      • 1...Kxh7
        • 2.Rh8#
      • 1...Bxg7
        • 2.Qxg7#
      • 1...Re5
        • 2.Qh3#
      • 1...Ra6
        • 2.Qh3#
      • 1...Rb6
        • 2.Qh3#
      • 1...Rc6
        • 2.Qh3#
      • 1...Rd6
        • 2.Qh3#
      • 1...Rf6
        • 2.Qh3#
      • 1...Rg6
        • 2.Rh5#
      • 1...Re7
        • 2.Qh3#
      • 1...Re8
        • 2.Qh3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XP(D)::R1(C)
  • Tries
    • Try
      • R(G);
      • Threat
        • R1(C)
      • Vars
        • B(b);N_GUARD::QAB1(E),XB(b)
      • Refutation
        • P(c);XB(B)
    • Try
      • Q(E);
      • Threat
        • R1(C)
      • Vars
        • R(d);S_CUTB(b)::QAB(E)
      • Refutation
        • P(c);XB(B)
  • Actual
    • P(D);
    • Threat
      • P=S
    • Vars
      • K(e);OGATEB,P-FLIGHT,XS(F)::R1(G)
      • B(b);OGATE,XP(D)::QAB1(E),XB(b)
      • R(d);OGATE::QAR(E)
      • R(d);SBLOCK::R1(C)


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).