MESON Chess Problem Database

Problem Display
PID: 11904 (6N1/KQ1n4/3prp2/5k1P/R2R2n1/3Pr2N/4P2q/1B4b1 w - - 0 1)

Kiss, Janos

3rd Prize, KeyStip 09. Ty., 1973

6N1/KQ1n4/3prp2/5k1P/R2R2n1/3Pr2N/4P2q/1B4b1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rd5#
      • 2.Qd5#
    • 1...Sge5
      • 2.Sh6#
  • Tries
    • 1.Sh6+?
      • 1...Ke5
        • 2.Rd5#
        • 2.Qd5#
      • 1...Sxh6!
    • 1.Se7+?
      • 1...Ke5
        • 2.Rd5#
        • 2.Qd5#
      • 1...Rxe7!
    • 1.Rf4+?
      • 1...Ke5
        • 2.d4#
      • 1...Qxf4!
    • 1.Qf3+?
      • 1...Ke5
        • 2.Rd5#
        • 2.Qd5#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Rxf3!
    • 1.Qd5+?
      • 1...Qe5
        • 2.Rf4#
      • 1...R3e5
        • 2.e4#
      • 1...R6e5
        • 2.Se7#
      • 1...Sge5
        • 2.Sh6#
      • 1...Sde5!
  • Keys
    • 1.Rd5+!
      • 1...Qe5
        • 2.Rf4#
      • 1...R3e5+
        • 2.d4#
      • 1...R6e5
        • 2.Qxd7#
      • 1...Sge5
        • 2.Sh6#
      • 1...Sde5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,SBLOCK::S(J)
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • S(d);XS(J)
    • Try
      • S(J);CHECK
      • Refutation
        • R(g);XS(J)
    • Try
      • R(F);CHECK
      • Vars
        • K(e);P-FLIGHT::P(C)
      • Refutation
        • Q(b);XR(F)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAR1(I),XQ(b)
      • Refutation
        • R(c);P_PINR(F),XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(b);P_SPINQ(b)::R1(F)
        • R(c);OGATE,P_PINR(F),P_SPINR(c)::P(B)
        • R(g);P_SPINR(g)::S(J)
        • S(d);P_SPINS(d)::S(J)
      • Refutation
        • S(i);P_SPINS(i)
  • Actual
    • R(F);CHECK
    • Vars
      • Q(b);P_SPINQ(b)::R1(E)
      • R(c);CHECK,P_SPINR(c)::B(A)+P(C)
      • R(g);P_SPINR(g),S_CUTQ(b),S_CUTR(c),S_CUTS(d)::QAB(I),XS(i)
      • S(d);P_SPINS(d)::S(J)
      • S(i);OGATE,P_SPINS(i)::QAB(I)
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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).