Problem Display
PID: 251260 (3b4/pnp5/krN3K1/pnR5/1R1p4/p1pN4/8/7B w - - 0 1)

Segers, Marcel

British Chess Magazine, 1933

3b4/pnp5/krN3K1/pnR5/1R1p4/p1pN4/8/7B

#2

6 + 11


SOLUTION


  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Rxc6#
    • 1...Bf6
      • 2.Sb8#
    • 1...S5d6
      • 2.Sb8#
    • 1...Sxc5
      • 2.Sxc5#
    • 1...axb4
      • 2.Sxb4#
  • Keys
    • 1.Ra4!
      • threat
        • 2.Sb4#
      • 1...Rxc6+
        • 2.Rxc6#
      • 1...Sxc5
        • 2.Sxc5#
      • 1...S7d6
        • 2.Scb4#
      • 1...S5d6
        • 2.Sb8#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(g);CHECK,OGATE,XS(E)::R(D),XR(g)
    • B(k);N_PINS(E)::S(E)
    • S(e);N_PINS(E)::S(E)
    • S(i);XR(D)::S(B),XS(i)
    • P(d);XR(C)::S(B),XP(d)
  • Actual
    • R(C);P_PINP(d)
    • Threat
      • S(B)
    • Vars
      • R(g);CHECK,OGATE,XS(E)::R(D),XR(g)
      • S(i);XR(D)::S(B),XS(i)
      • S(i);N_PINS(E)::S(E)
      • S(e);N_PINS(E)::S(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).