MESON Chess Problem Database

Problem Display
PID: 56116 (1R1RBK2/5p2/4Pp2/Npk5/Prp5/Pp4N1/1nrn2p1/BQ3b2 w - - 0 1)

Chepizhni, Viktor Ivanovich

Loshinski, Lev Ilich

1st Prize, Nederlandse Bond van Probleemvrienden, 1964

1R1RBK2/5p2/4Pp2/Npk5/Prp5/Pp4N1/1nrn2p1/BQ3b2

#2

11 + 12

3747 FIDE Album (1962-1964) 1968
3713 Snap 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qf5#
    • 1...Rc3
      • 2.Qf5#
    • 1...Rxa4
      • 2.Rxb5#
    • 1...Be2
      • 2.Qg1#
    • 1...Bd3
      • 2.Qg1#
    • 1...Sd1
      • 2.Bd4#
    • 1...Sd3
      • 2.Bd4#
    • 1...Sxa4
      • 2.Bd4#
    • 1...Sxb1
      • 2.Se4#
    • 1...Sf3
      • 2.Se4#
    • 1...Se4
      • 2.Sxe4#
    • 1...bxa4
      • 2.axb4#
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Rbc8#
      • 1...Kxc4
        • 2.Rbc8#
      • 1...Rcxc4
        • 2.Qf5#
      • 1...Rbxc4
        • 2.Rxb5#
      • 1...Bxc4
        • 2.Qg1#
      • 1...Sbxc4
        • 2.Bd4#
      • 1...Sdxc4
        • 2.Se4#
      • 1...bxc4
        • 2.axb4#

Anticipated by 18090(1953)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 12
  • Sets
    • R(c);OGATE::QAR(B)
    • R(g);N_GUARD,XP(E)::R1(H),XP(i)
    • B(a);OGATE::QAB(B)
    • S(b);OGATE::B(A)
    • S(b);OGATE,XP(E)::B(A)
    • S(d);N_GUARD,XQ(B)::S(D)
    • S(d);N_GUARD::S(D)
    • S(d);N_GUARD::S(D),XS(d)
    • P(i);XP(E)::P(C),XR(g)
  • Actual
    • S(F);XP(h)
    • Threat
      • R(H)
    • Vars
      • K(j);P-FLIGHT,XS(F)::R(H)
      • R(c);OGATE,SBLOCK,XS(F)::QAR(B)
      • R(g);N_GUARD,SBLOCK,XS(F)::R1(H),XP(i)
      • B(a);OGATE,SBLOCK,XS(F)::QAB(B)
      • S(b);OGATE,SBLOCK,XS(F)::B(A)
      • S(d);N_GUARD,SBLOCK,XS(F)::S(D)
      • P(i);SBLOCK,XS(F)::P(C),XR(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).