MESON Chess Problem Database

Problem Display
PID: 7002 (8/1B1qrpBp/1Q5N/1p3pnb/3npk1P/1R1r3p/Kb3P2/6N1 w - - 0 1)

Larsen, Karl Adolf Koefoed

3rd HM., Munkassakk, 1935

8/1B1qrpBp/1Q5N/1p3pnb/3npk1P/1R1r3p/Kb3P2/6N1

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.fxg3#
    • 1...Sdf3
      • 2.Se2#
    • 1...Sgf3
      • 2.Sxh3#
  • Tries
    • 1.Qd6+?
      • 1...Re5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Qxd6!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxg5#
      • 1...Rg3
        • 2.fxg3#
      • 1...Sdf3
        • 2.Se2#
      • 1...Sde6
        • 2.Qxf5#
      • 1...Sgf3
        • 2.Sxh3#
      • 1...Sge6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::P(C),XR(b)
    • S(d);N_GUARD,SBLOCK,S_CUTB(j)::S(A)
    • S(i);N_GUARD,SBLOCK,S_CUTR(b)::S(A),XP(c)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • Q(k);XQ(F)
  • Actual
    • Q(F);P_PINP(h)
    • Threat
      • QAB1(F),XS(i)
    • Vars
      • R(b);OGATE::P(C),XR(b)
      • S(d);N_GUARD,SBLOCK,S_CUTB(j)::S(A)
      • S(d);N_GUARD,S_CUTQ(k)::QAR1(F),XP(h)
      • S(i);N_GUARD,SBLOCK,S_CUTR(b)::S(A),XP(c)
      • S(i);S_CUTR(l)::QAB1(F)
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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).