MESON Chess Problem Database

Problem Display
PID: 10599 (4bB2/8/4pn2/4Pp1q/RN1k1P2/1P3p2/1bKN1P2/3Q4 w - - 0 1)

Fleck, Ferenc

1st HM., Freie Presse, 1966

4bB2/8/4pn2/4Pp1q/RN1k1P2/1P3p2/1bKN1P2/3Q4

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qxa1#
    • 1...Se4
      • 2.Sxf3#
    • 1...Sd5
      • 2.Sc6#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Bc5#
      • 1...Se4
        • 2.Sxf3#
      • 1...Sd7
        • 2.Sc6#
      • 1...Bb5!
    • 1.Qe2?
      • threat
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qe3#
      • 1...Bb5
        • 2.Qe3#
      • 1...Sg4
        • 2.Sxf3#
        • 2.Qd3#
        • 2.Qc4#
      • 1...Sd5
        • 2.Sc6#
        • 2.Qd3#
        • 2.Qc4#
      • 1...fxe2!
    • 1.Qxf3?
      • threat
        • 2.Sc6#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Bxa4
        • 2.Qd3#
        • 2.Qe3#
      • 1...Qh3
        • 2.Sc6#
      • 1...Bb5
        • 2.Sc6#
        • 2.Qe3#
      • 1...Bc6
        • 2.Sxc6#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Se4
        • 2.Qd3#
        • 2.Qe3#
      • 1...Sg4
        • 2.Sc6#
        • 2.Qd3#
      • 1...Sd5
        • 2.Sc6#
        • 2.Qd3#
      • 1...Qxf3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe3#
      • 1...Sg4
        • 2.Sxf3#
      • 1...Sd5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATEB::QAB(A),XB(a)
    • S(g);SBLOCK::QAR(A)+S(C),DCHECK,XP(b)
    • S(g);SBLOCK::R(F)+S(G),DCHECK
  • Tries
    • Try
      • R(F);
      • Threat
        • B(J)
      • Vars
        • S(g);SBLOCK::QAR(A)+S(C),DCHECK,XP(b)
        • S(g);S_CUTB(h)::S(G)
      • Refutation
        • B(h);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • B(h);::QAB1(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(3)
      • Vars
        • Q(e);::R(F)+S(G),DCHECK
      • Refutation
        • Q(e);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(g);S_CUTQ(e)::S(C),XP(b)
      • S(g);SBLOCK::R(F)+S(G),DCHECK
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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).