MESON Chess Problem Database

Problem Display
PID: 95216 (8/rp3B1K/1Q3P1p/4p1b1/3Nkrp1/2p2bn1/2PPp1p1/4q3 w - - 0 1)

Zalkind, Lazar Borissovich

Pravo lidu, 1911

8/rp3B1K/1Q3P1p/4p1b1/3Nkrp1/2p2bn1/2PPp1p1/4q3

#2

7 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Qe6#
  • Tries
    • 1.Qc6+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...bxc6!
    • 1.Qxb7+?
      • 1...Kxd4
        • 2.Qb4#
      • 1...Rxb7!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sd6#
      • 1...Kxf5
        • 2.Bg6#
      • 1...Qxd2
        • 2.Sxg3#
      • 1...Rxf5
        • 2.Qb4#
      • 1...Sxf5
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(j);OGATEB,SBLOCK,XS(C)::QAR2(D)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(g);OGATEB,P-FLIGHT,XS(C)::QAR1(D)
      • Refutation
        • P(n);P_PINB(F),XQ(D)
    • Try
      • Q(D);CHECK,XP(n)
      • Vars
        • K(g);OGATEB,P-FLIGHT,XS(C)::QAR2(D)
      • Refutation
        • R(m);P_PINB(F),XQ(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(C)::B(F)
      • Q(a);N_GUARD,XP(B)::S(C),XS(f)
      • R(h);SBLOCK,XS(C)::QAR(D)
      • S(f);SBLOCK,XS(C)::P(B)
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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).