Problem Display
PID: 21867 (8/5p2/2p2Rp1/4R1P1/1N1kp3/1p2N3/1PpP4/2K5 w - - 0 1)

Warton, Joseph John

Warton, Thomas Joseph

Manchester Weekly Times, 1921

8/5p2/2p2Rp1/4R1P1/1N1kp3/1p2N3/1PpP4/2K5

#2

8 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Sxc6#
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Re7?
      • 1...c5
        • 2.Rd6#
      • 1...Kc5!
    • 1.Re8?
      • 1...c5
        • 2.Rd6#
      • 1...Kc5!
    • 1.Rxf7?
      • 1...c5
        • 2.Rd5#
      • 1...Kxe5!
  • Keys
    • 1.d3!
      • 1...Kxe3
        • 2.Rxe4#
      • 1...Kxe5
        • 2.Sxc6#
      • 1...exd3
        • 2.Sxc6#
      • 1...c5
        • 2.Rxe4#

FEATURES


  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XR(F)::S(E),XP(e)
    • P(e);N_GUARD::R1(F)
  • Tries
    • Try
      • R(F);
      • Vars
        • P(e);SBLOCK::R(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • P(e);SBLOCK::R(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);XP(g)
      • Vars
        • P(e);N_GUARD::R1(F)
      • Refutation
        • K(c);S_FLIGHT,XR(F)
  • Actual
    • P(C);
    • Vars
      • K(c);P_SPINP(d),S_FLIGHT,XS(D)::R1(F),XP(d)
      • K(c);S_FLIGHT,XR(F)::S(E),XP(e)
      • P(d);SBLOCK,XP(C)::S(E),XP(e)
      • P(e);SBLOCK::R1(F),XP(d)


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).