MESON Chess Problem Database

Problem Display
PID: 258504 (2bK2B1/3pp3/n1pk3N/Np5R/8/8/8/2B5 w - - 0 1)

Leontieva, Nadezhda Aleksandrovna

Sachove umeni (Ceskoslovensky sach), 1973

2bK2B1/3pp3/n1pk3N/Np5R/8/8/8/2B5

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Sxb7#
    • 1...b4
      • 2.Sc4#
    • 1...c5
      • 2.Rd5#
    • 1...e6
      • 2.Sf7#
  • Tries
    • 1.Ba3+?
      • 1...Sc5
        • 2.Bxc5#
      • 1...b4
        • 2.Sc4#
      • 1...c5
        • 2.Rd5#
      • 1...Sb4!
  • Keys
    • 1.Be3!
      • 1...Sb4
        • 2.Bc5#
      • 1...Bb7
        • 2.Sxb7#
      • 1...Sc5
        • 2.Bxc5#
      • 1...Sc7
        • 2.Bc5#
      • 1...Sb8
        • 2.Bc5#
      • 1...b4
        • 2.Sc4#
      • 1...c5
        • 2.Rd5#
      • 1...e5
        • 2.Sf5#
      • 1...e6
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::S(B),XB(g)
    • P(a);N_GUARD::S(B)
    • P(c);N_GUARD::R1(C)
    • P(f);SBLOCK::S(D)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(A),XS(b)
        • P(a);P_SPINP(a)::S(B)
        • P(c);P_SPINP(c)::R1(C)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • B(A);
    • Vars
      • S(b);N_GUARD::B(A)
      • B(g);N_GUARD::S(B),XB(g)
      • S(b);N_GUARD::B(A),XS(b)
      • P(a);N_GUARD::S(B)
      • P(c);N_GUARD::R1(C)
      • P(f);SBLOCK::S(D)
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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).