MESON Chess Problem Database

Problem Display
PID: 72876 (2B5/1N1n1pR1/7p/1p3n1P/1Nk2p1p/P2RpP1Q/4P1K1/4B3 w - - 0 1)

Kiss, Janos

1st Prize, Magyar Sakkelet TT, 1951

2B5/1N1n1pR1/7p/1p3n1P/1Nk2p1p/P2RpP1Q/4P1K1/4B3

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Rc3#
    • 1...Sc5
      • 2.Sa5#
  • Tries
    • 1.Qxf5?
      • threat
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qe4#
        • 2.Qxf4#
        • 2.Qd5#
        • 2.Qxf7#
      • 1...Sc5
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qxc5#
        • 2.Qd5#
      • 1...Se5
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Sb6
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qe4#
        • 2.Qxf4#
        • 2.Qc5#
      • 1...Sf6
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qc5#
      • 1...Sf8
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qe4#
        • 2.Qxf4#
        • 2.Qc5#
        • 2.Qd5#
      • 1...f6
        • 2.Sa5#
        • 2.Sd6#
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qxf4#
        • 2.Qd5#
      • 1...h3+!
  • Keys
    • 1.Rxf7!
      • 1...Sg3
        • 2.Qe6#
      • 1...Sd4
        • 2.Rc3#
      • 1...Sd6
        • 2.Qe6#
      • 1...Se7
        • 2.Rxf4#
      • 1...Sg7
        • 2.Rxf4#
      • 1...Sc5
        • 2.Sa5#
      • 1...Se5
        • 2.Be6#
      • 1...Sb6
        • 2.Rc7#
      • 1...Sf6
        • 2.Rc7#
      • 1...Sb8
        • 2.Be6#
      • 1...Sf8
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::R1(E)
    • S(h);SBLOCK::S(J)
  • Tries
    • Try
      • Q(G);XS(f)
      • Threat
        • DUALS(6)
      • Refutation
        • P(d);CHECK
  • Actual
    • R(K);XP(i)
    • Vars
      • S(f);OGATE::QAB(G)
      • S(f);SBLOCK::R1(E)
      • S(f);OGATE::R(K),XP(c)
      • S(h);SBLOCK::S(J)
      • S(h);OGATE::B(L)
      • S(h);OGATE::R(K)
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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).