MESON Chess Problem Database

Problem Display
PID: 11841 (2N1B2B/7n/K3kr2/1pR5/4N3/8/1brP4/1Q6 w - - 0 1)

Svyatov, Gennadi

1st Prize, RSFSR, 1972

2N1B2B/7n/K3kr2/1pR5/4N3/8/1brP4/1Q6

#2

8 + 6

145 StrateGems 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qb3#
    • 1...Sg5
      • 2.Sxg5#
    • 1...Sf8
      • 2.Sg5#
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qa2#
        • 2.Qe1#
      • 1...Rxd2
        • 2.Qe4#
      • 1...Rxc3
        • 2.Qe4#
      • 1...Bxc3
        • 2.Qb3#
      • 1...Rc1
        • 2.Qa2#
        • 2.Qe4#
      • 1...Rf1
        • 2.Re5#
        • 2.Qa2#
      • 1...Rf2
        • 2.Re5#
        • 2.Qa2#
      • 1...Rf3
        • 2.Re5#
        • 2.Qa2#
      • 1...Rf4
        • 2.Re5#
      • 1...Rf5
        • 2.Rc6#
      • 1...Ba1
        • 2.Qe1#
        • 2.Qb3#
      • 1...Bc1
        • 2.Qb3#
      • 1...Ba3
        • 2.Qe1#
        • 2.Qb3#
      • 1...Sg5
        • 2.Qa2#
      • 1...b4
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::QAB(A)
    • S(f);N_GUARD::S(C),XS(f)
    • S(f);N_GUARD::S(C)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);OGATE,XP(B)::QAR2(A)
      • R(b);OGATE,XS(C)::QAR2(A)
      • B(a);OGATE,XS(C)::QAB(A)
      • R(e);::R1(D)
      • R(e);SBLOCK::R(D)
      • B(a);OGATE::QAB(A)
      • S(f);::QAB(A)
      • P(c);::QAR(A)
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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).