MESON Chess Problem Database

Problem Display
PID: 72770 (7q/2R2Pp1/1R2NkN1/3P3p/r2p3K/6p1/1rB1P3/B5b1 w - - 0 1)

Fuhrer, Viktor

3rd HM., Die Schwalbe 015. TT, 1932

7q/2R2Pp1/1R2NkN1/3P3p/r2p3K/6p1/1rB1P3/B5b1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.f8Q#
      • 2.f8R#
    • 1...Qh7
      • 2.f8Q#
      • 2.f8R#
    • 1...Qe8
      • 2.fxe8S#
    • 1...Qg8
      • 2.fxg8S#
    • 1...Rba2
      • 2.Sxd4#
      • 2.Sef4#
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
      • 2.Sef8#
  • Tries
    • 1.Sxg7+?
      • 1...Kxg7
        • 2.f8Q#
      • 1...Rxb6!
  • Keys
    • 1.e4!
      • threat
        • 2.e5#
      • 1...dxe4 ep+
        • 2.Sef4#
      • 1...Kxg6
        • 2.Sf8#
      • 1...Rxc2
        • 2.Sc5#
      • 1...d3
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD::P=Q
    • Q(i);OGATE::PXQ(i)=S
  • Tries
    • Try
      • S(G);CHECK,XP(h)
      • Vars
        • K(g);S_FLIGHT,XS(G)::P=Q
      • Refutation
        • R(b);P_SPINP(e),XR(F)
  • Actual
    • P(C);
    • Threat
      • P(C)
    • Vars
      • P(e);CHECK,EP,P_SPINR(b),XP(C)::R(F)+S(G)
      • K(g);P-FLIGHT,XS(H)::R(F)+S(G),DCHECK
      • R(b);N_GUARD,P_SPINP(e),XB(B)::R(F)+S(G)
      • P(e);P_PINP(C),P_SPINR(b)::R(F)+S(G)
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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).