MESON Chess Problem Database

Problem Display
PID: 146133 (nQB5/2p2p2/R4P2/Kp1rk3/1p1N4/1P3PnN/2P1P3/B2R4 w - - 0 1)

Zilahi, Zoltan

HM., Die Schwalbe Rupp TT, 1935

nQB5/2p2p2/R4P2/Kp1rk3/1p1N4/1P3PnN/2P1P3/B2R4

#2

13 + 8

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sc6#
    • 1...Rd6
      • 2.Sc6#
    • 1...Rd8
      • 2.Sc6#
    • 1...Se4
      • 2.f4#
  • Tries
    • 1.Qxc7+?
      • 1...Rd6
        • 2.Sxb5#
        • 2.Sf5#
        • 2.Sc6#
        • 2.Qxd6#
      • 1...Sxc7!
  • Keys
    • 1.Qxb5!
      • threat
        • 2.Sf5#
      • 1...Rxb5+
        • 2.Sxb5#
      • 1...Sxe2
        • 2.Sxe2#
      • 1...Se4
        • 2.f4#
      • 1...Sf5
        • 2.Sxf5#
      • 1...c5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(d);::B(A)+S(H),DCHECK
    • R(d);N_SPINP(f)::B(A)+S(H),DCHECK
    • S(a);SBLOCK::P(F)
  • Tries
    • Try
      • Q(L);CHECK,XP(f)
      • Refutation
        • S(h);XQ(L)
  • Actual
    • Q(L);N_PINP(f),P_PINR(d),P_SPINQ(L),XP(c)
    • Threat
      • B(A)+S(H)
    • Vars
      • R(d);CHECK,N_SPINR(d),XQ(L)::B(A)+S(H),XR(d)
      • S(a);XP(D)::B(A)+S(H),XS(a)
      • S(a);SBLOCK::P(F)
      • S(a);::B(A)+S(H),XS(a)
      • P(f);N_PINQ(L),N_SPINR(d)::QAR(L)
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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).