MESON Chess Problem Database

Problem Display
PID: 235061 (NRN5/p6p/2kBP3/5p2/K1Bp3q/1pPR4/8/n2r2bb w - - 0 1)

Shanshin, Valery Yurevich

Hlas l'udu, 1988

NRN5/p6p/2kBP3/5p2/K1Bp3q/1pPR4/8/n2r2bb

#2

9 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Bb5#
    • 1...a5
      • 2.Rb6#
    • 1...a6
      • 2.Rb6#
  • Tries
    • 1.Sab6?
      • threat
        • 2.Bb5#
      • 1...dxc3
        • 2.Sxa7#
      • 1...axb6
        • 2.Rxb6#
      • 1...a6!
    • 1.Sc7?
      • threat
        • 2.Bb5#
      • 1...a6
        • 2.Rb6#
      • 1...dxc3!
    • 1.Ba3?
      • threat
        • 2.Sxa7#
      • 1...Qe7
        • 2.Sxe7#
      • 1...a5
        • 2.Sa7#
        • 2.Rb6#
      • 1...a6
        • 2.Sa7#
        • 2.Rb6#
      • 1...dxc3!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Sxa7#
      • 1...dxc3
        • 2.Bb5#
      • 1...Qe7
        • 2.Sxe7#
      • 1...a5
        • 2.Sa7#
        • 2.Rb6#
      • 1...a6
        • 2.Sa7#
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(d);SBLOCK::B(D)
    • P(j);N_GUARD::R1(H)
  • Tries
    • Try
      • S(G);
      • Threat
        • B(D)
      • Vars
        • P(f);P_PINB(D),XP(A)::S(I),XP(j)
        • P(j);OGATE,XS(G)::R1(H),XP(j)
      • Refutation
        • P(j);
    • Try
      • S(G);
      • Threat
        • B(D)
      • Vars
        • P(j);N_GUARD::R1(H)
      • Refutation
        • P(f);P_PINB(D),XP(A)
    • Try
      • B(E);
      • Threat
        • S(I),XP(j)
      • Vars
        • Q(g);N_GUARD::S(I),XQ(g)
      • Refutation
        • P(f);P_PINB(D),XP(A)
  • Actual
    • B(E);
    • Threat
      • S(I),XP(j)
    • Vars
      • P(f);XP(A)::B(D)
      • Q(g);N_GUARD::S(I),XQ(g)
HTML5 logo

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).