MESON Chess Problem Database

Problem Display
PID: 180453 (B7/8/3p4/N3p3/p2kNp2/pnR2P2/8/R1B4K w - - 0 1)

Lider, Valentin Viktorovich

Themes-64, 1978

B7/8/3p4/N3p3/p2kNp2/pnR2P2/8/R1B4K

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Sc6#
  • Tries
    • 1.Rxa3?
      • threat
        • 2.Rxa4#
      • 1...Sd2
        • 2.Rd3#
      • 1...Sc5
        • 2.Rc4#
      • 1...Sxa5!
  • Keys
    • 1.Bb2!
      • 1...Sxa1
        • 2.Rxa3#
      • 1...Sxa5
        • 2.Rd1#
      • 1...axb2
        • 2.Rxa4#
      • 1...Sc1
        • 2.Rcxa3#
      • 1...Sd2
        • 2.Rcxa3#
      • 1...Sc5
        • 2.Rcxa3#
      • 1...a2
        • 2.Rxb3#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::S(G)
  • Tries
    • Try
      • R(A);XP(a)
      • Threat
        • R(A),XP(c)
      • Vars
        • S(b);::R1(D)
      • Refutation
        • S(b);XS(G)
  • Actual
    • B(B);
    • Vars
      • S(b);OGATE,XR(A)::B(B)+R(D),XP(a)
      • S(b);N_GUARD,XS(G)::R(A)
      • P(a);OGATE,XB(B)::R(A),XP(c)
      • S(b);OGATE::B(B)+R(D),XP(a)
      • P(a);N_GUARD::B(B)+R(D),XS(b)
      • P(g);SBLOCK::S(G)
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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).