MESON Chess Problem Database

Problem Display
PID: 72580 (3r4/PK1Pp3/1NB4R/2B1kpp1/2pR1n2/1pr5/4b2Q/2n3N1 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd KNSB, 1936

3r4/PK1Pp3/1NB4R/2B1kpp1/2pR1n2/1pr5/4b2Q/2n3N1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sxc4#
    • 1...Rxd7+
      • 2.Sxd7#
    • 1...Rb8+
      • 2.axb8Q#
      • 2.axb8B#
    • 1...Bd3
      • 2.Sf3#
    • 1...g4
      • 2.Qxf4#
  • Tries
    • 1.Bd5?
      • threat
        • 2.Re6#
      • 1...Rxd7+
        • 2.Sxd7#
      • 1...Rb8+
        • 2.axb8Q#
        • 2.axb8B#
      • 1...e6
        • 2.Rxe6#
      • 1...Rg3!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Bd4#
      • 1...Rxd7+
        • 2.Sxd7#
      • 1...Rb8+
        • 2.axb8Q#
        • 2.axb8B#
      • 1...Rd3
        • 2.Sxc4#
      • 1...Bd3
        • 2.Sf3#
      • 1...Sd3
        • 2.Rxe2#
      • 1...e6
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);N_GUARD,S_CUTB(b)::S(E),XP(e)
    • R(k);CHECK,XP(J)::S(E),XR(k)
    • R(k);CHECK,OGATE::PXR(k)=Q
    • B(b);N_GUARD,S_CUTR(d)::S(A)
    • P(i);N_GUARD::QAB1(B),XS(f)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(G)
      • Vars
        • R(k);CHECK,XP(J)::S(E),XR(k)
        • R(k);CHECK,OGATE::PXR(k)=Q
        • P(j);::R1(G),XP(j)
      • Refutation
        • R(d);N_SPINS(f)
  • Actual
    • R(C);
    • Threat
      • B(D)
    • Vars
      • R(k);CHECK,XP(J)::S(E),XR(k)
      • R(k);CHECK,OGATE::PXR(k)=Q
      • R(d);N_GUARD,S_CUTB(b)::S(E),XP(e)
      • B(b);N_GUARD,S_CUTR(d)::S(A)
      • S(a);N_GUARD,S_CUTR(d)::R(C),XB(b)
      • P(j);N_GUARD::B(D)
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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).