MESON Chess Problem Database

Problem Display
PID: 49207 (5RN1/1P3n1r/1K2B2B/1pPPk1r1/1p2n3/3b1p2/2pQRN2/2b5 w - - 0 1)

Zilahi, Zoltan

Schach-Express, 1949

5RN1/1P3n1r/1K2B2B/1pPPk1r1/1p2n3/3b1p2/2pQRN2/2b5

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxe4#
    • 1...Bc4
      • 2.Rxe4#
  • Tries
    • 1.b8Q+?
      • 1...Kd4
        • 2.Rxe4#
        • 2.Qxd3#
      • 1...Sd6!
    • 1.b8B+?
      • 1...Kd4
        • 2.Rxe4#
        • 2.Qxd3#
      • 1...Sd6!
  • Keys
    • 1.Qxb4!
      • threat
        • 2.Sxd3#
      • 1...Kf4
        • 2.b8Q#
        • 2.b8B#
      • 1...Rxg8
        • 2.Qc3#
      • 1...Bxe2
        • 2.Qxe4#
      • 1...Bc4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(h);N_SPINS(f),P_SPINB(c),S_FLIGHT::R1(B),XS(f)
    • B(c);N_GUARD::R1(B),XS(f)
  • Tries
    • Try
      • P(I);CHECK
      • Refutation
        • S(j);
    • Try
      • P(I);CHECK
      • Refutation
        • S(j);
  • Actual
    • Q(A);XP(e)
    • Threat
      • S(C),XB(c)
    • Vars
      • K(h);P_SPINR(i),S_FLIGHT::P=Q
      • R(i);XS(K)::QAB(A)
      • B(c);N_GUARD,N_SPINS(f),XR(B)::QAR1(A),XS(f)
      • B(c);N_GUARD::R1(B),XS(f)
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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).