MESON Chess Problem Database

Problem Display
PID: 287524 (4n2Q/1N1R3b/r1p3N1/P1p1p3/Knk4r/b1p5/p1pR2Pq/8 w - - 0 1)

Szoghy, Jozsef

Mat, 1987

4n2Q/1N1R3b/r1p3N1/P1p1p3/Knk4r/b1p5/p1pR2Pq/8

#2

8 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxe5#
    • 1...Qh1
      • 2.Sxe5#
    • 1...Qxg2
      • 2.Sxe5#
    • 1...Qh3
      • 2.Sxe5#
    • 1...Rf4
      • 2.Sxe5#
    • 1...Rxa5+
      • 2.Sxa5#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
    • 1...Sg7
      • 2.Sd6#
  • Tries
    • 1.Qxe5?
      • threat
        • 2.Qxc5#
      • 1...Rxa5+
        • 2.Sxa5#
      • 1...Qxe5
        • 2.Sxe5#
      • 1...Rh5
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe6#
      • 1...Sd5
        • 2.Qe2#
      • 1...Qg1!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qxc5#
      • 1...Rxa5+
        • 2.Sxa5#
      • 1...Qg1
        • 2.Sxe5#
      • 1...Sd3
        • 2.Qf7#
      • 1...Sd5
        • 2.Qf1#
      • 1...Sd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::S(E),XP(j)
    • Q(c);N_GUARD,XP(B)::S(E),XP(j)
    • R(h);S_CUTQ(c)::S(E),XP(j)
    • R(k);CHECK,XP(D)::S(F),XR(k)
    • S(n);N_GUARD::S(F),XS(n)
    • S(n);N_GUARD::S(F)
  • Tries
    • Try
      • Q(H);XP(j)
      • Threat
        • QAR1(H),XP(i)
      • Vars
        • R(k);CHECK,XP(D)::S(F),XR(k)
        • Q(c);XQ(H)::S(E),XQ(c)
        • R(h);N_GUARD::QAR2(H)
        • S(f);N_GUARD::QAB(H)
      • Refutation
        • Q(c);
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(i)
    • Vars
      • R(k);CHECK,XP(D)::S(F),XR(k)
      • Q(c);N_GUARD::S(E),XP(j)
      • S(f);N_GUARD::QAB(H)
      • S(n);N_GUARD::S(F),XS(n)
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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).