MESON Chess Problem Database

Problem Display
PID: 49466 (8/3QPr2/K1Pn1p1r/R3N2p/3PkPp1/2Ppn1q1/4b3/1BB1NR2 w - - 0 1)

Zilahi, Zoltan

Schach-Express, 1949

8/3QPr2/K1Pn1p1r/R3N2p/3PkPp1/2Ppn1q1/4b3/1BB1NR2

#2

13 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Bxd3#
    • 1...fxe5
      • 2.Rxe5#
  • Keys
    • 1.S5xd3!
      • threat
        • 2.Qe6#
      • 1...Bxd3+
        • 2.Bxd3#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Sec4
        • 2.Sf2#
      • 1...Sdc4
        • 2.Sc5#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(A),XP(b)
    • P(i);OGATE,XS(I)::R1(H),XP(i)
  • Actual
    • S(I);P_SPINS(I),XP(b)
    • Threat
      • QAR2(L)
    • Vars
      • B(a);CHECK,OGATE,P_SPINB(a),XS(I)::B(A),XB(a)
      • Q(d);OGATE,XP(G)::R1(D),XQ(d)
      • R(k);OGATE,XP(M)::QAR(L),XR(k)
      • S(c);N_PINS(I)::B(A)+S(I),DCHECK
      • S(h);N_PINS(I)::B(A)+S(I),DCHECK
      • P(i);N_GUARD::R1(H)
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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).