MESON Chess Problem Database

Problem Display
PID: 6820 (bb6/3K4/Qpn5/Rn2p3/prk1N3/5N2/2B5/3RB3 w - - 0 1)

Fleck, Ferenc

1st HM., The Puzzler, 1933

bb6/3K4/Qpn5/Rn2p3/prk1N3/5N2/2B5/3RB3

#2

8 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Rxb4#
        • 2.Rc5#
      • 1...Rb1
        • 2.Bd3#
        • 2.Rb4#
        • 2.Rc5#
      • 1...Rb2
        • 2.Bd3#
        • 2.Rb4#
        • 2.Rc5#
      • 1...Rb3
        • 2.Rb4#
        • 2.Rc5#
      • 1...Sd4
        • 2.Sfd2#
        • 2.Rc5#
      • 1...Rxb5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qg8#
      • 1...Sc3
        • 2.Sed2#
      • 1...Sd4
        • 2.Sfd2#
      • 1...Sd6
        • 2.Sxe5#
      • 1...Sc7
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);XS(d)
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);P_SPINR(b),XR(F)
  • Actual
    • Q(G);N_PINS(d),P_PINS(g)
    • Threat
      • QAB(G)
    • Vars
      • S(d);SBLOCK::S(E)
      • S(d);SBLOCK::S(D)
      • S(d);S_CUTB(i)::S(D),XP(e)
      • S(d);N_GUARD,N_SPINS(g),S_CUTB(i)::S(E)
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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).