Problem Display
PID: 101290 (1nR3B1/1R6/3k4/8/K4P2/p1b2N2/5r1B/8 w - - 0 1)

Weiss, Berthold

3rd HM., Good Companions (February Meredith Ty.), 1917

1nR3B1/1R6/3k4/8/K4P2/p1b2N2/5r1B/8

#2

7 + 5


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Be5
      • 2.fxe5#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sb5#
        • 2.Sf5#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sd7
        • 2.Sf5#
      • 1...Rb2
        • 2.Sf5#
      • 1...Bxd4!
    • 1.f5+?
      • 1...Be5
        • 2.Bxe5#
      • 1...Rxh2!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sc4#
      • 1...Bxe5
        • 2.fxe5#
      • 1...Sc6
        • 2.Rxc6#
      • 1...Sd7
        • 2.Rxd7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);OGATE::P(D),XB(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);OGATE,P_PINS(B),P_SPINR(a),XP(D)::B(A),XR(a)
        • S(e);N_GUARD::R1(F),XS(e)
        • S(e);::S(B)
        • R(a);::S(B)
      • Refutation
        • B(c);XS(B)
    • Try
      • P(D);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::B(A),XB(c)
      • Refutation
        • R(a);XB(A)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(c);OGATE,XS(B)::P(D),XB(c)
      • S(e);N_GUARD::R1(F),XS(e)
      • S(e);N_GUARD::R1(E),XS(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).