Problem Display
PID: 225129 (8/q1p5/1n4Rp/2BPk3/1P1p1R2/rb2P2K/2pp1pPQ/6b1 w - - 0 1)

Stoyanov, Kiril N

Suomen Shakki, 1957

8/q1p5/1n4Rp/2BPk3/1P1p1R2/rb2P2K/2pp1pPQ/6b1

#2

9 + 12


15148 Sadier Collection 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Rxd4#
    • 1...Bxd5
      • 2.Bxd4#
    • 1...Sxd5
      • 2.exd4#
    • 1...h5
      • 2.Rg5#
  • Tries
    • 1.Rfg4+?
      • 1...Kxd5
        • 2.Rxd4#
      • 1...Kf5
        • 2.Qf4#
        • 2.e4#
      • 1...Bxh2!
  • Keys
    • 1.Rgf6!
      • threat
        • 2.R6f5#
      • 1...Kxd5
        • 2.Rxd4#
      • 1...Bxd5
        • 2.Bxd4#
      • 1...Sxd5
        • 2.exd4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(h);P-FLIGHT,XP(H)::R1(F),XP(g)
    • B(f);P_PINP(C),SBLOCK,XP(H)::B(G),XP(g)
    • S(i);SBLOCK,XP(H)::P(C),XP(g)
    • P(j);N_GUARD::R(I)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(h);P-FLIGHT,XP(H)::R1(F),XP(g)
      • Refutation
        • B(a);XQ(B)
  • Actual
    • R(I);
    • Threat
      • R1(I)
    • Vars
      • K(h);P-FLIGHT,XP(H)::R1(F),XP(g)
      • B(f);P_PINP(C),SBLOCK,XP(H)::B(G),XP(g)
      • S(i);SBLOCK,XP(H)::P(C),XP(g)


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).