MESON Chess Problem Database

Problem Display
PID: 87721 (5N2/2PpP3/1p1P1pp1/1P1k1Np1/b2P1RR1/1P6/8/7K w - - 0 1)

Petkov, Petko Andonov

Problemista, 1966

5N2/2PpP3/1p1P1pp1/1P1k1Np1/b2P1RR1/1P6/8/7K

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.e8Q?
      • threat
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qa8#
      • 1...Bxb3
        • 2.Qf7#
      • 1...Bxb5
        • 2.Qe4#
      • 1...gxf4
        • 2.Qa8#
      • 1...gxf5!
  • Keys
    • 1.e8S!
      • threat
        • 2.Se3#
        • 2.Se7#
        • 2.Sxf6#
      • 1...Bxb3
        • 2.Se3#
      • 1...Bxb5
        • 2.Se7#
      • 1...gxf4
        • 2.Sxf6#
      • 1...gxf5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(J);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XP(B)::QAB(J)
        • B(a);XP(F)::QAB1(J)
        • P(c);XR(D)::QAB(J)
      • Refutation
        • P(f);XS(G)
  • Actual
    • P(J);
    • Threat
      • DUALS(3)
    • Vars
      • B(a);XP(B)::S(G)
      • B(a);XP(F)::S(G)
      • P(c);XR(D)::S(J),XP(e)
      • P(f);OGATE,XS(G)::R(D),XP(f)
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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).