Problem Display
PID: 190202 (5B1n/3R3B/1p4r1/bP2p3/qN1Nk1Pp/1P3R1n/p3pp2/K2b3Q w - - 0 1)

Fink, Adolf Jay

Pittsburgh Gazette-Times, 1913

5B1n/3R3B/1p4r1/bP2p3/qN1Nk1Pp/1P3R1n/p3pp2/K2b3Q

#2

11 + 13


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Sets
    • 1...Sf7
      • 2.Bxg6#
    • 1...exd4
      • 2.Re7#
  • Tries
    • 1.Sxe2?
      • threat
        • 2.Sc3#
        • 2.Rc3#
        • 2.Rfd3#
        • 2.Rg3#
        • 2.Rxh3#
      • 1...Qxb3
        • 2.Rxb3#
        • 2.Rc3#
        • 2.Rfd3#
      • 1...Qxb4
        • 2.Rc3#
        • 2.Rfd3#
        • 2.Rg3#
        • 2.Rxh3#
      • 1...Bxb4
        • 2.Rc3#
        • 2.Rfd3#
        • 2.Rg3#
        • 2.Rxh3#
      • 1...f1Q
        • 2.Sc3#
      • 1...f1B
        • 2.Sc3#
      • 1...f1R
        • 2.Sc3#
      • 1...Sg1
        • 2.Sc3#
      • 1...Sf4
        • 2.Sc3#
      • 1...Sg5
        • 2.Sc3#
      • 1...Bxe2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Qxd4+
        • 2.Rc3#
      • 1...Bc3+
        • 2.Sxc3#
      • 1...Kxd4
        • 2.Sf6#
      • 1...exd4
        • 2.Re3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(m);N_GUARD::B(J),XR(l)
    • P(j);OGATEB,SBLOCK,XS(F)::R(I)
  • Tries
    • Try
      • S(F);XP(c)
      • Threat
        • DUALS(5)
      • Vars
        • P(d);::S(F)
        • S(e);::S(F)
      • Refutation
        • B(a);XS(F)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • Q(f);CHECK,SBLOCK,XS(F)::QAB(B)+R(D)
      • B(i);CHECK,N_GUARD::S(E),XB(i)
      • K(g);N_SPINR(l),P-FLIGHT,XS(F)::R(I)+S(E)
      • P(j);SBLOCK,XS(F)::QAB(B)+R(D),DCHECK


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).