MESON Chess Problem Database

Problem Display
PID: 69776 (1B2BK2/3N3p/3npp1Q/4Ppn1/3p2kP/r2R3b/4Pq1P/3N1R2 w - - 0 1)

Lacny, Ludovit

3rd Prize, Banska Bystrica (BABY), 1959

1B2BK2/3N3p/3npp1Q/4Ppn1/3p2kP/r2R3b/4Pq1P/3N1R2

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qg1
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qe3
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qg3
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qxh4
      • 2.Sxf6#
    • 1...Qxe2
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qg2
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qxh2
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Qf4
      • 2.Sxf6#
      • 2.Qh5#
    • 1...Sf3
      • 2.Sxf2#
      • 2.Sxf6#
    • 1...Sgf7
      • 2.Sxf2#
      • 2.Sxf6#
    • 1...fxe5
      • 2.Qxg5#
  • Tries
    • 1.Bh5+?
      • 1...Kxh4
        • 2.Bf3#
      • 1...Kf4!
  • Keys
    • 1.exf6!
      • threat
        • 2.Qxg5#
      • 1...Kf4
        • 2.Rxd4#
      • 1...Qxh4
        • 2.Se5#
      • 1...Qe3
        • 2.Qh5#
      • 1...Qf4
        • 2.Qh5#
      • 1...Sf3
        • 2.Sxf2#
      • 1...Sge4
        • 2.Se5#
      • 1...Sgf7
        • 2.Sxf2#
      • 1...Sde4
        • 2.Qh5#
      • 1...Sdf7
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • Q(a);XP(F)::S(I),XP(j)
    • P(j);N_GUARD,XP(G)::QAR1(H),XS(g)
  • Tries
    • Try
      • B(K);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,XP(F)::QAR(H)+B(K)
      • Refutation
        • K(e);P-FLIGHT,P_SPINQ(a),P_SPINS(g)
  • Actual
    • P(G);XP(j)
    • Threat
      • QAR1(H),XS(g)
    • Vars
      • K(e);P-FLIGHT,P_SPINQ(a),P_SPINS(g)::R(E),XP(d)
      • Q(a);XP(F)::S(I)
      • Q(a);::QAB1(H)
      • S(g);::S(A),XQ(a)
      • S(g);::S(I)
      • S(h);::QAB1(H)
      • S(h);::S(A),XQ(a)
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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).