MESON Chess Problem Database

Problem Display
PID: 45649 (K3B3/3pb3/1B4pn/3k4/P1NNnRPq/2p1R1pP/2Qp1p2/8 w - - 0 1)

Fleck, Ferenc

6th HM., BCF 057. Ty., 1947-1948

K3B3/3pb3/1B4pn/3k4/P1NNnRPq/2p1R1pP/2Qp1p2/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qb3#
    • 1...Sxg4
      • 2.Bf7#
    • 1...Sf5
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...Sg8
      • 2.Bf7#
  • Tries
    • 1.Rf5+?
      • 1...Kxc4
        • 2.Qb3#
      • 1...Sxf5
        • 2.Bf7#
      • 1...gxf5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qxe4#
      • 1...Kxc4
        • 2.Qa2#
      • 1...Kxc6
        • 2.Qxe4#
      • 1...Ke6
        • 2.Qxe4#
      • 1...Sc5
        • 2.Sb4#
      • 1...Sg5
        • 2.Sxe7#
      • 1...Sd6
        • 2.Sb4#
      • 1...Sf6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • K(g);OGATEB,P_SPINP(c),S_FLIGHT,XS(E)::QAB1(A)
    • S(i);N_GUARD,XP(H)::B(K)
    • S(i);N_GUARD::B(K)
    • S(i);N_GUARD::B(K),XS(i)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(g);P_SPINP(c),S_FLIGHT,XS(E)::QAB1(A)
        • S(i);XR(G)::B(K)
      • Refutation
        • P(h);XR(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(A),XS(e)
    • Vars
      • K(g);OGATEB,P_SPINP(c),P_SPINS(e),S_FLIGHT,XS(E)::QAB(A)
      • K(g);P_SPINP(j),S_FLIGHT,XS(F)::QAB(A),XS(e)
      • K(g);P_SPINS(e),S_FLIGHT::QAR2(A),XS(e)
      • S(e);S_CUTB(k)::S(F)
      • S(e);S_CUTQ(f)::S(F),XB(k)
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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).