MESON Chess Problem Database

Problem Display
PID: 179800 (n7/6nb/3Q4/3pNp2/1P1k4/5K2/3P4/2bR4 w - - 0 1)

Zalkind, Lazar Borissovich

La Strategie, 1913

n7/6nb/3Q4/3pNp2/1P1k4/5K2/3P4/2bR4

#2

6 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb6+?
      • 1...Kxe5
        • 2.Re1#
        • 2.d4#
      • 1...Sxb6!
    • 1.Qh6?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxe5
        • 2.d4#
      • 1...Bxd2
        • 2.Qe3#
      • 1...Sh5
        • 2.Qe3#
      • 1...Se6
        • 2.Qe3#
      • 1...f4!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.d4#
      • 1...Bxd2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK,N_PINP(c)
      • Refutation
        • S(g);XQ(F)
    • Try
      • Q(F);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(E)::P(B)
        • B(a);P_SPINB(a),XP(B)::QAB1(F)
        • S(e);::QAB1(F)
      • Refutation
        • P(d);
  • Actual
    • Q(F);N_PINP(c)
    • Threat
      • S(E)
    • Vars
      • K(b);OGATE,S_FLIGHT,XS(E)::P(B)
      • B(a);N_GUARD,P_SPINB(a),XP(B)::QAB(F)
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).