MESON Chess Problem Database

Problem Display
PID: 38553 (2N1Rr2/1n1p3P/qQ4K1/pP1kPn1N/1Pp3Rp/2P4p/5PrB/7B w - - 0 1)

Fleck, Ferenc

Recomm., BCF 016. Ty., 1934-1935

2N1Rr2/1n1p3P/qQ4K1/pP1kPn1N/1Pp3Rp/2P4p/5PrB/7B

#2

14 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb6+
      • 2.Sxb6#
    • 1...Rf6+
      • 2.Sxf6#
    • 1...Rxe8
      • 2.Sf6#
    • 1...Rg8+
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Rh8
      • 2.Sf6#
    • 1...Se3
      • 2.Se7#
    • 1...Sg3
      • 2.Rd4#
    • 1...Sd4
      • 2.Se7#
    • 1...Sfd6
      • 2.Qd4#
    • 1...Sh6
      • 2.Se7#
    • 1...Se7+
      • 2.Sxe7#
    • 1...Sg7
      • 2.Se7#
    • 1...Sbd6
      • 2.Qc5#
  • Tries
    • 1.Qxa6?
      • threat
        • 2.Sb6#
        • 2.Qxb7#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Rg8+
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Rxe8
        • 2.Sf6#
      • 1...Sd4
        • 2.Sb6#
        • 2.Se7#
      • 1...Sfd6
        • 2.Sb6#
      • 1...Sc5
        • 2.Sb6#
      • 1...Sbd6
        • 2.Sb6#
      • 1...Sd8
        • 2.Sb6#
      • 1...axb4!
  • Keys
    • 1.f3!
      • threat
        • 2.Sf4#
      • 1...Qxb6+
        • 2.Sxb6#
      • 1...Rxg4+
        • 2.fxg4#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Rg8+
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Se7+
        • 2.Sxe7#
      • 1...Rxe8
        • 2.Sf6#
      • 1...Se3
        • 2.Se7#
      • 1...Sg3
        • 2.Rd4#
      • 1...Sd4
        • 2.Se7#
      • 1...Sfd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Se7#
      • 1...Sg7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(h);CHECK,XQ(J)::S(M),XQ(h)
    • R(k);CHECK,N_GUARD,N_PINQ(J)::S(I),XR(k)
    • R(k);N_GUARD,XR(N)::S(I)
    • R(k);CHECK,OGATE::PXR(k)=Q
    • R(k);N_GUARD::S(I)
    • S(g);N_GUARD::S(M)
    • S(g);N_PINR(F)::R1(F)
    • S(g);N_PINQ(J)::QAR1(J)
    • S(g);CHECK,N_GUARD::S(M),XS(g)
    • S(i);N_PINQ(J)::QAR1(J)
  • Tries
    • Try
      • Q(J);N_SPINQ(J),XQ(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(k);CHECK,N_GUARD::S(I),XR(k)
        • R(k);CHECK,OGATE::PXR(k)=Q
        • S(g);CHECK,N_GUARD::S(M),XS(g)
        • R(k);N_GUARD,XR(N)::S(I)
        • S(g);::S(M)
        • S(i);::S(M)
      • Refutation
        • P(e);XP(E)
  • Actual
    • P(B);N_PINR(a)
    • Threat
      • S(I)
    • Vars
      • Q(h);CHECK,XQ(J)::S(M),XQ(h)
      • R(a);CHECK,OGATE,XR(F)::B(A)+P(B),XR(a)
      • R(k);CHECK,N_GUARD,N_PINQ(J)::S(I),XR(k)
      • R(k);CHECK,OGATE::PXR(k)=Q
      • S(g);CHECK,N_GUARD::S(M),XS(g)
      • R(k);N_GUARD,XR(N)::S(I)
      • S(g);N_GUARD::S(M)
      • S(g);N_PINR(F)::R1(F)
      • S(g);N_PINQ(J)::QAR1(J)
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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).