MESON Chess Problem Database

Problem Display
PID: 73967 (1B6/KB1N2pQ/p2rp3/2prNn2/R1n1kb1R/2P5/b2PP3/6q1 w - - 0 1)

Lindemann, W

Tijdschrift vd KNSB, 1938

1B6/KB1N2pQ/p2rp3/2prNn2/R1n1kb1R/2P5/b2PP3/6q1

#2

11 + 12

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Sxd6#
        • 2.d3#
      • 1...Rxd7
        • 2.Rxf4#
        • 2.d3#
      • 1...Qe3
        • 2.Sxd6#
      • 1...Qd4
        • 2.Sxd6#
      • 1...Qb1
        • 2.Sxd6#
        • 2.Sxc5#
      • 1...Qd1
        • 2.Sxd6#
        • 2.Sxc5#
      • 1...Qg3
        • 2.Sxd6#
        • 2.Sxc5#
      • 1...Rb6
        • 2.Sd6#
        • 2.Rxf4#
        • 2.d3#
      • 1...Rc6
        • 2.Sd6#
        • 2.Rxf4#
      • 1...Bb1
        • 2.Sxd6#
      • 1...Bxc4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sxd6#
      • 1...Rxd7
        • 2.Rxf4#
      • 1...Qd4
        • 2.Sg5#
      • 1...Qg4
        • 2.Sxc5#
      • 1...Qg6
        • 2.Sxc5#
      • 1...Rb6
        • 2.Rxf4#
      • 1...Rc6
        • 2.Rxf4#
      • 1...g6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);P_PINS(h),XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R(D)+S(F),DCHECK,XR(j)
        • Q(a);::S(F),XR(j)
        • B(b);::R(D)+S(F),DCHECK,XR(j)
      • Refutation
        • B(b);N_SPINB(e),P_SPINB(b),XS(F)
  • Actual
    • S(F);
    • Threat
      • S(F),XR(j)
    • Vars
      • R(j);P_PINB(H),XS(I)::R1(E),XB(e)
      • Q(a);N_GUARD,N_SPINS(c),P_SPINS(h)::S(F)
      • Q(a);N_GUARD,N_SPINB(e)::S(I),XP(f)
      • Q(a);N_GUARD::S(I),XP(f)
      • R(j);::R1(E),XB(e)
      • R(j);N_SPINR(g)::R1(E),XB(e)
      • P(l);N_GUARD::S(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).