Problem Display
PID: 35638 (8/6p1/p5B1/3R1pBK/p7/3p4/p7/rk1NN3 w - - 0 1)

Gorbatenko, Yuri Grigorevich

Source?, 1994

8/6p1/p5B1/3R1pBK/p7/3p4/p7/rk1NN3

#2

6 + 8


3705 Album Russia (1992-1994) 2000

SOLUTION


  • SOUND
  • Sets
    • 1...a5
      • 2.Rb5#
  • Tries
    • 1.Bd2?
      • 1...f4
        • 2.Bxd3#
      • 1...a5
        • 2.Rb5#
      • 1...a3!
    • 1.Rxd3?
      • 1...f4
        • 2.Rc3#
      • 1...a3
        • 2.Rb3#
      • 1...a5!
    • 1.Rxf5?
      • 1...d2
        • 2.Rc5#
      • 1...a5
        • 2.Rb5#
      • 1...a3!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rc1#
      • 1...d2
        • 2.Bxf5#
      • 1...f4
        • 2.Bxd3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD::R(C)
  • Tries
    • Try
      • B(D);
      • Vars
        • P(f);OGATE,P_SPINP(d)::B(F),XP(d)
        • P(g);N_GUARD::R(C)
      • Refutation
        • P(e);
    • Try
      • R(C);XP(d)
      • Vars
        • P(f);OGATEB::B(F)+R(C)
        • P(e);N_GUARD::R(C)
      • Refutation
        • P(g);
    • Try
      • R(C);XP(f)
      • Vars
        • P(d);OGATEB::B(F)+R(C)
        • P(g);N_GUARD::R(C)
      • Refutation
        • P(e);
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • P(d);OGATEB,P_SPINP(f)::B(F),XP(f)
      • P(f);OGATE,P_SPINP(d)::B(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).