MESON Chess Problem Database

Problem Display
PID: 23358 (3Q3K/3B1p2/6kp/6N1/8/8/8/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Zaporozskaya Pravda, 1963

3Q3K/3B1p2/6kp/6N1/8/8/8/8

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Be8#
  • Tries
    • 1.Sf3?
      • 1...f5
        • 2.Be8#
      • 1...f6
        • 2.Qe8#
      • 1...h5
        • 2.Qg5#
      • 1...Kh5!
    • 1.Se4?
      • 1...f5
        • 2.Be8#
        • 2.Qe8#
      • 1...f6
        • 2.Qe8#
      • 1...h5
        • 2.Qg5#
        • 2.Qf6#
      • 1...Kh5!
    • 1.Sh7?
      • 1...f5
        • 2.Be8#
        • 2.Qe8#
      • 1...f6
        • 2.Qe8#
      • 1...h5
        • 2.Qg5#
        • 2.Qf6#
      • 1...Kh5!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Sf4#
      • 1...Kh5
        • 2.Sf4#
      • 1...f5
        • 2.Be8#
      • 1...f6
        • 2.Qe8#
      • 1...h5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::B(B)
  • Tries
    • Try
      • S(A);
      • Vars
        • P(c);OGATEB,SBLOCK::B(B)
        • P(c);OGATEB,SBLOCK::QAB(C)
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(c);OGATEB::QAB(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(c);OGATEB::QAB(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(a);S_FLIGHT::S(A)
      • P(c);OGATEB,SBLOCK::B(B)
      • P(c);OGATEB,SBLOCK::QAB(C)
      • P(b);N_GUARD::QAR1(C)
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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).