Problem Display
PID: 86930 (8/2p1p3/2NPK1Pp/R5pk/8/4pNR1/2B4P/2r5 w - - 0 1)

Kapustin, Fedor Mikhailovich

Tkachenko, Sergiy Ivanovich

US Problem Bulletin, 1990

8/2p1p3/2NPK1Pp/R5pk/8/4pNR1/2B4P/2r5

#2

9 + 7


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Kf5?
      • threat
        • 2.Rh3#
      • 1...g4
        • 2.Ke6#
      • 1...e6+!
    • 1.Sfe5?
      • threat
        • 2.Rh3#
      • 1...g4
        • 2.Sf3#
      • 1...Kh4!
    • 1.Bf5?
      • threat
        • 2.Rh3#
      • 1...g4
        • 2.Bc2#
      • 1...Rc4!
    • 1.Ra4?
      • threat
        • 2.Rh3#
      • 1...g4
        • 2.Ra5#
      • 1...Rxc2!
  • Keys
    • 1.Sce5!
      • threat
        • 2.Rh3#
      • 1...g4
        • 2.Sc6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);N_PINP(c),S_FLIGHT
      • Threat
        • R(D)
      • Vars
        • P(c);::R(E)+K(H)
      • Refutation
        • P(g);CHECK
    • Try
      • S(C);N_PINP(c)
      • Threat
        • R(D)
      • Vars
        • P(c);::R(E)+S(C)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(A);N_PINP(c)
      • Threat
        • R(D)
      • Vars
        • P(c);OGATEB::R(E)+B(A)
      • Refutation
        • R(a);
    • Try
      • R(E);N_PINP(c)
      • Threat
        • R(D)
      • Vars
        • P(c);OGATEB::R(E)
      • Refutation
        • R(a);XB(A)
  • Actual
    • S(F);N_PINP(c)
    • Threat
      • R(D)
    • Vars
      • P(c);::R(E)+S(F)


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).