Problem Display
PID: 160421 (Q7/1pp5/1pNb3R/1k6/p2BK3/3P4/p7/2R2B2 w - - 0 1)

Shire, David J

British Chess Magazine, 2008

Q7/1pp5/1pNb3R/1k6/p2BK3/3P4/p7/2R2B2

#2

8 + 7


SOLUTION


  • SOUND
  • Tries
    • 1.Rc5+?
      • 1...bxc5
        • 2.Qxb7#
      • 1...Bxc5!
    • 1.Rh5+?
      • 1...Be5
        • 2.Rxe5#
      • 1...Bc5!
  • Keys
    • 1.Bxb6!
      • threat
        • 2.Qa5#
      • 1...Kxb6
        • 2.Qa5#
      • 1...cxb6
        • 2.d4#
      • 1...Bb4
        • 2.Sd4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(d);S_CUTB(e),XR(A)::QAR2(H),XP(f)
      • Refutation
        • B(e);XR(A)
    • Try
      • R(G);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::R(G),XB(e)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • B(D);XP(d)
    • Threat
      • QAR1(H)
    • Vars
      • K(c);P-FLIGHT,XB(D)::QAB1(H)
      • P(g);SBLOCK,XB(D)::B(B)+P(C)
      • B(e);SBLOCK::S(F)


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).