MESON Chess Problem Database

Problem Display
PID: 62095 (2Q5/4R2q/K1pp2bB/2Nr2n1/2nPNkp1/1R3pp1/8/1B2r3 w - - 0 1)

Forster, Klaus

11th Place, Match: Budapest - Munich, 1989

2Q5/4R2q/K1pp2bB/2Nr2n1/2nPNkp1/1R3pp1/8/1B2r3

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Bxg5#
    • 1...Rf5
      • 2.Se6#
    • 1...Bf5
      • 2.Bxg5#
    • 1...Se3
      • 2.Sd3#
    • 1...Se5
      • 2.Bxg5#
  • Tries
    • 1.Qf5+?
      • 1...Rxf5
        • 2.Se6#
      • 1...Bxf5
        • 2.Bxg5#
      • 1...Kxf5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxg4#
      • 1...Re6
        • 2.Sxe6#
      • 1...Rf5
        • 2.Sd3#
      • 1...Bf5
        • 2.Sh5#
      • 1...Bh5
        • 2.Sxh5#
      • 1...Se3
        • 2.Se6#
      • 1...Se5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD,XP(C)::B(G),XS(h)
    • R(g);SBLOCK::S(E)
    • B(k);S_CUTR(g)::B(G),XS(h)
    • S(d);SBLOCK::S(E)
    • S(d);S_CUTR(g)::B(G),XS(h)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • R(g);SBLOCK,XQ(I)::S(E)
        • B(k);SBLOCK,XQ(I)::B(G),XS(h)
      • Refutation
        • K(e);N_SPINS(h),P-FLIGHT,XQ(I)
  • Actual
    • S(D);
    • Threat
      • QAR1(I),XP(f)
    • Vars
      • R(a);N_GUARD::S(E),XR(a)
      • R(g);S_CUTB(k)::S(E)
      • B(k);N_GUARD::S(D)
      • B(k);N_GUARD::S(D),XB(k)
      • S(d);S_CUTR(a)::S(E)
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).