Problem Display
PID: 50660 (1r4R1/2p1pP2/1n1Nk1Pn/1P2B3/p2PK3/8/8/8 w - - 0 1)

Morris, Eben

Chess Amateur (The), 1907

1r4R1/2p1pP2/1n1Nk1Pn/1P2B3/p2PK3/8/8/8

#2

8 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...Rb7
      • 2.f8S#
    • 1...Sd7
      • 2.d5#
    • 1...Sc8
      • 2.f8S#
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sc5#
      • 1...Kd7
        • 2.Sc5#
      • 1...Rxb7
        • 2.f8S#
      • 1...Sd7
        • 2.d5#
      • 1...c5
        • 2.Sxc5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD::P=S
    • S(b);N_GUARD,SBLOCK::P(A)
    • S(b);S_CUTR(g)::P=S
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(c);S_FLIGHT::S(E)
      • R(g);N_GUARD,XS(E)::P=S
      • S(b);N_GUARD,SBLOCK::P(A)
      • P(e);::S(E),XP(e)


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).