MESON Chess Problem Database

Problem Display
PID: 265395 (8/2N1p3/B5K1/3R4/4k3/1pb1NpP1/2n1b3/2Q3Bn w - - 0 1)

Fleck, Ferenc

Die Schwalbe, 1972

8/2N1p3/B5K1/3R4/4k3/1pb1NpP1/2n1b3/2Q3Bn

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Bd3#
    • 1...Bd3
      • 2.Bxd3#
    • 1...Sxe3
      • 2.Qxe3#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qf4#
      • 1...Sxg3
        • 2.Sxg3#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Be5
        • 2.Sd2#
      • 1...Se3
        • 2.Qxe3#
      • 1...e5!
    • 1.Sxc2?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sxg3
        • 2.Qe3#
      • 1...Bd4
        • 2.Qf4#
      • 1...Be5
        • 2.Qe3#
      • 1...e5
        • 2.Qe3#
      • 1...Bd2!
    • 1.Sc4?
      • threat
        • 2.Qf4#
      • 1...Bd4
        • 2.Sd2#
      • 1...Sd4
        • 2.Qe3#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Be5
        • 2.Sd2#
      • 1...Se3
        • 2.Qxe3#
      • 1...e5
        • 2.Sd6#
      • 1...Sxg3!
    • 1.Qxc2+?
      • 1...Bd3
        • 2.Bxd3#
        • 2.Qxd3#
      • 1...bxc2!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qf4#
      • 1...Sxg3
        • 2.Sf2#
      • 1...Bd2
        • 2.Re5#
      • 1...Be5
        • 2.Rxe5#
      • 1...Se3
        • 2.Qxe3#
      • 1...e5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(c);N_GUARD::B(F)
    • B(c);N_GUARD::B(F),XB(c)
    • S(b);OGATE,XS(C)::QAR1(A),XS(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);XP(D)::S(C),XS(a)
        • B(e);N_GUARD::S(C),XB(e)
        • B(e);N_GUARD::S(C)
        • S(b);N_GUARD::QAR1(A),XS(b)
      • Refutation
        • P(h);
    • Try
      • S(C);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XP(D)::QAR1(A)
        • B(e);::QAR1(A)
        • P(h);::QAR1(A)
      • Refutation
        • B(e);
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • B(e);N_GUARD::S(C)
        • S(b);N_GUARD::QAR1(A)
        • B(e);N_GUARD::S(C),XB(e)
        • S(b);N_GUARD::QAR1(A),XS(b)
        • P(h);N_GUARD::S(C)
      • Refutation
        • S(a);XP(D)
    • Try
      • Q(A);CHECK,XS(b)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • S(a);N_GUARD,XP(D)::S(C)
      • B(e);N_GUARD::R1(E)
      • B(e);N_GUARD::R1(E),XB(e)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(h);N_GUARD,S_CUTB(e)::S(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).