MESON Chess Problem Database

Problem Display
PID: 86936 (1R2Q3/K7/1N6/kP1P3R/bN6/bp6/7p/8 w - - 0 1)

Vasilenko, Anatoly Grigorovich

Probleemblad, 1986

1R2Q3/K7/1N6/kP1P3R/bN6/bp6/7p/8

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb4
      • 2.Sc4#
  • Tries
    • 1.Sa8?
      • threat
        • 2.Sc6#
      • 1...Bxb4
        • 2.Qd8#
      • 1...Bxb5
        • 2.Qxb5#
      • 1...Kxb4!
    • 1.Sc8?
      • threat
        • 2.Sc6#
      • 1...Bxb4
        • 2.Qd8#
      • 1...Bxb5
        • 2.Qxb5#
      • 1...Kxb4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sc4#
      • 1...Kxb5
        • 2.d6#
      • 1...Bxb5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XS(A)::S(E)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(A)
      • Vars
        • B(b);SBLOCK,XS(A)::QAB(H)
        • B(d);OGATE,XP(B)::QAR1(H),XB(d)
      • Refutation
        • K(e);S_FLIGHT,XS(A)
    • Try
      • S(E);
      • Threat
        • S(A)
      • Vars
        • B(b);SBLOCK,XS(A)::QAB(H)
        • B(d);OGATE,XP(B)::QAR1(H),XB(d)
      • Refutation
        • K(e);S_FLIGHT,XS(A)
  • Actual
    • Q(H);
    • Threat
      • S(E)
    • Vars
      • K(e);P-FLIGHT,XP(B)::R(D)+P(C)
      • B(d);SBLOCK,XP(B)::QAB(H)+S(A),DCHECK
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).