MESON Chess Problem Database

Problem Display
PID: 274240 (3Q3b/4r3/p1Bnn3/3Pk1P1/1PbR3N/6p1/3P1N2/K1B5 w - - 0 1)

van Sinttruijen, JJ

Probleemblad, 1953

3Q3b/4r3/p1Bnn3/3Pk1P1/1PbR3N/6p1/3P1N2/K1B5

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Sf3#
      • 2.Bb2#
    • 1...Rg7
      • 2.Qf6#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sb5
      • 2.Re4#
    • 1...Sf5
      • 2.Sf3#
      • 2.Re4#
    • 1...Sb7
      • 2.Re4#
    • 1...Sf7
      • 2.Re4#
    • 1...Sc8
      • 2.Re4#
    • 1...Se8
      • 2.Re4#
  • Tries
    • 1.Sg6+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Kf5!
    • 1.Qxd6+?
      • 1...Kxd4
        • 2.Sf3#
        • 2.Sf5#
        • 2.Bb2#
      • 1...Kxd6!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4+
        • 2.d4#
      • 1...Sxf4
        • 2.Bb2#
      • 1...Se4
        • 2.Rxe4#
      • 1...Rg7
        • 2.Qf6#
      • 1...Bd3
        • 2.Sxd3#
      • 1...Sf8
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(g);OGATE::QAB1(K)
    • S(e);N_GUARD::R1(F),XS(e)
    • S(e);N_GUARD::R1(F)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XR(F)::B(B)
      • Refutation
        • K(c);P-FLIGHT,P_PINR(F)
    • Try
      • Q(K);CHECK,XS(e)
      • Refutation
        • K(c);P_PINR(F),S_FLIGHT,XQ(K)
  • Actual
    • R(F);
    • Threat
      • S(G)
    • Vars
      • K(c);CHECK,S_CUTS(f),S_FLIGHT,XR(F)::B(B)+P(C)
      • S(f);N_GUARD,SBLOCK,XR(F)::B(B)
      • S(e);N_GUARD::R1(F),XS(e)
      • R(g);OGATE::QAB1(K)
      • B(b);N_GUARD::S(D),XB(b)
      • S(f);N_GUARD::P(C)
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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).