MESON Chess Problem Database

Problem Display
PID: 179804 (n6K/1pp5/brP1N3/rk6/4P3/p1Rn4/N1P5/5B2 w - - 0 1)

Zalkind, Lazar Borissovich

Deutsche Schachzeitung, 1913

n6K/1pp5/brP1N3/rk6/4P3/p1Rn4/N1P5/5B2

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Rc5#
  • Tries
    • 1.Rb3+?
      • 1...Ka4
        • 2.Sc3#
      • 1...Kc4
        • 2.Bxd3#
      • 1...Kxc6!
  • Keys
    • 1.Rc4!
      • 1...Kxc4
        • 2.Bxd3#
      • 1...Rxc6
        • 2.Rb4#
      • 1...bxc6
        • 2.Rb4#
      • 1...Ra4
        • 2.Rc5#
      • 1...Sc1
        • 2.Sc3#
        • 2.Sd4#
      • 1...Se1
        • 2.Sc3#
        • 2.Sd4#
      • 1...Sb2
        • 2.Sc3#
        • 2.Sd4#
      • 1...Sf2
        • 2.Sc3#
        • 2.Sd4#
      • 1...Sb4
        • 2.Sc3#
      • 1...Sf4
        • 2.Sc3#
        • 2.Sd4#
      • 1...Sc5
        • 2.Sd4#
      • 1...Se5
        • 2.Sc3#
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::R1(D)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(d);N_SPINS(b),S_FLIGHT::S(B)
        • K(d);S_FLIGHT::B(A),XS(b)
      • Refutation
        • K(d);N_SPINS(b),S_FLIGHT,XP(F)
  • Actual
    • R(D);N_PINS(b)
    • Vars
      • K(d);OGATEB,P_SPINS(b),S_FLIGHT,XR(D)::B(A),XS(b)
      • R(f);SBLOCK,XP(F)::R1(D)
      • P(g);SBLOCK,XP(F)::R1(D)
      • R(c);SBLOCK::R1(D)
      • S(b);::S(B)
      • S(b);::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).