Problem Display
PID: 225945 (2N5/B2r4/R7/3kp1nb/1Pp5/5P2/2p2N2/2K3R1 w - - 0 1)

Legge, Robin H

The Field, 1896

(First published on Sat Feb 29 1896)

2N5/B2r4/R7/3kp1nb/1Pp5/5P2/2p2N2/2K3R1

#2

8 + 7


15239 Valois Notebooks 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Rd6
      • 2.Rxd6#
    • 1...Rxa7
      • 2.Rd6#
    • 1...Rb7
      • 2.Rd6#
    • 1...Rc7
      • 2.Rd6#
    • 1...Re7
      • 2.Sxe7#
      • 2.Rd6#
    • 1...Rf7
      • 2.Rd6#
    • 1...Rg7
      • 2.Rd6#
    • 1...Rh7
      • 2.Rd6#
    • 1...Rd8
      • 2.Se7#
    • 1...Se4
      • 2.fxe4#
    • 1...e4
      • 2.Rxg5#
  • Keys
    • 1.Sd1!
      • threat
        • 2.Sc3#
        • 2.Se3#
      • 1...cxd1Q+
        • 2.Rxd1#
      • 1...cxd1R+
        • 2.Rxd1#
      • 1...Rxa7
        • 2.Rd6#
      • 1...Bxf3
        • 2.Sc3#
      • 1...Sxf3
        • 2.Sc3#
      • 1...cxd1S
        • 2.Rxd1#
      • 1...cxd1B
        • 2.Rxd1#
      • 1...Rd6
        • 2.Rxd6#
      • 1...c3
        • 2.Se3#
      • 1...e4
        • 2.Rxg5#
      • 1...Se4
        • 2.Se3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD::R1(F),XR(g)
    • R(g);N_GUARD,XB(G)::R1(F)
    • R(g);N_GUARD::R1(F)
    • R(g);N_GUARD::S(H)
    • S(e);OGATE::P(D),XS(e)
    • P(d);OGATEB::R(B),XS(e)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK,OGATE,XS(C)::R(B),XQ(a)
      • P(a);CHECK,OGATE,XS(C)::R(B),XR(a)
      • R(g);N_GUARD,XB(G)::R1(F)
      • B(f);XP(D)::S(C)
      • S(e);XP(D)::S(C)
      • P(a);OGATE,XS(C)::R(B),XS(a)
      • P(a);OGATE,XS(C)::R(B),XB(a)
      • R(g);N_GUARD::R1(F),XR(g)
      • P(b);::S(C)
      • P(d);OGATEB::R(B),XS(e)
      • S(e);::S(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).