Problem Display
PID: 158112 (3K4/3B4/R1pkp2R/3p4/3p4/8/2N1N3/3Q4 w - - 0 1)

Antonov, Yuri Mikhailovich

Buletin Problemistic, 1978

3K4/3B4/R1pkp2R/3p4/3p4/8/2N1N3/3Q4

#2

7 + 5


15148 Sadier Collection 2016

SOLUTION


  • SOUND
  • Tries
    • 1.Scxd4?
      • 1...Ke5
        • 2.Rxe6#
      • 1...Kc5!
    • 1.Sexd4?
      • 1...Kc5
        • 2.Rxc6#
      • 1...Ke5!
    • 1.Qd2?
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke5
        • 2.Qf4#
      • 1...d3!
  • Keys
    • 1.Qd3!
      • 1...Kc5
        • 2.Rxc6#
      • 1...Ke5
        • 2.Rxe6#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);XP(a)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::R1(E),XP(e)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT
    • Try
      • S(C);XP(a)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::R1(D),XP(c)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAB1(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT::R1(D),XP(c)
      • K(d);N_SPINP(c),S_FLIGHT::R1(E),XP(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).