MESON Chess Problem Database

Problem Display
PID: 16580 (b3K1R1/1Qp1p3/2r5/R1N1nkPP/2r1N3/1B1p3P/6PB/8 w - - 0 1)

Buglos, Janos

1/2 Prize, Nepszava, 1941

b3K1R1/1Qp1p3/2r5/R1N1nkPP/2r1N3/1B1p3P/6PB/8

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.g4#
    • 1...Sg6
      • 2.g4#
    • 1...Sd7
      • 2.g4#
    • 1...Sf7
      • 2.g4#
  • Tries
    • 1.Rf8+?
      • 1...Sf7
        • 2.g4#
      • 1...Rf6!
    • 1.Qxc6?
      • threat
        • 2.Qe6#
      • 1...Rxc5
        • 2.Be6#
      • 1...Sxc6
        • 2.Rf8#
        • 2.g4#
      • 1...e6
        • 2.Qxe6#
      • 1...Bxc6+!
    • 1.Qc8+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Sd7
        • 2.g4#
      • 1...e6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rxe5#
      • 1...Kxe4
        • 2.Rxe5#
      • 1...Kxe6
        • 2.Rxe5#
      • 1...Rxe4
        • 2.Rf8#
      • 1...Rxe6
        • 2.g4#
      • 1...R4c5
        • 2.Sg3#
      • 1...R6c5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::P(A)
  • Tries
    • Try
      • R(L);CHECK
      • Vars
        • S(c);P_SPINS(c)::P(A)
      • Refutation
        • R(e);P_SPINR(e)
    • Try
      • Q(J);XR(e)
      • Threat
        • QAB1(J)
      • Vars
        • R(b);OGATE,XS(G)::B(C)
        • P(g);::QAB1(J),XP(g)
      • Refutation
        • B(h);CHECK,XQ(J)
    • Try
      • Q(J);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(J),XR(e)
        • S(c);P_SPINS(c)::P(A)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • S(G);P_PINS(c)
    • Threat
      • R1(F),XS(c)
    • Vars
      • K(d);N_SPINS(c),P_SPINR(e),S_FLIGHT,XS(E)::R1(F),XS(c)
      • K(d);N_SPINS(c),P_SPINR(b),S_FLIGHT,XS(G)::R1(F),XS(c)
      • R(b);SBLOCK,XS(E)::R(L)
      • R(e);SBLOCK,XS(G)::P(A)
      • R(b);N_SPINS(c)::S(E)
      • R(e);N_SPINS(c)::S(G)
HTML5 logo

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).