MESON Chess Problem Database

Problem Display
PID: 179806 (8/8/K3pp2/1N1k1p2/2R5/PP1pnP2/6Q1/8 w - - 0 1)

Zalkind, Lazar Borissovich

Smena, 1929

8/8/K3pp2/1N1k1p2/2R5/PP1pnP2/6Q1/8

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.f4#
    • 1...Sd1
      • 2.f4#
    • 1...Sf1
      • 2.f4#
    • 1...Sc2
      • 2.f4#
    • 1...Sg4
      • 2.f4#
    • 1...e5
      • 2.Qg8#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Rc5#
      • 1...Ke5
        • 2.f4#
      • 1...e5
        • 2.Qg8#
      • 1...Sxc4+!
  • Keys
    • 1.b4!
      • threat
        • 2.Rc5#
      • 1...Kxc4
        • 2.Qa2#
      • 1...Ke5
        • 2.f4#
      • 1...Sxc4
        • 2.f4#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(c);P-FLIGHT::P(D)
    • S(b);N_GUARD::QAB(A)+P(D)
    • P(e);OGATEB,SBLOCK::QAB(A)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • R1(E)
      • Vars
        • K(c);P-FLIGHT::P(D)
        • P(e);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • S(b);CHECK,XR(E)
  • Actual
    • P(C);
    • Threat
      • R1(E)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(E)::QAB(A)
      • K(c);P-FLIGHT::P(D)
      • S(b);N_GUARD,SBLOCK,XR(E)::QAB(A)+P(D)
      • P(e);OGATEB,SBLOCK::QAB(A)
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).