MESON Chess Problem Database

Problem Display
PID: 99118 (5rB1/1p1R2Q1/N4N1r/BP1p2R1/Knk1q3/2ppP3/8/8 w - - 0 1)

Fleck, Ferenc

Magyar Sakkelet, 1958

5rB1/1p1R2Q1/N4N1r/BP1p2R1/Knk1q3/2ppP3/8/8

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Rxg4#
    • 1...Sa2
      • 2.Rc7#
    • 1...Sc2
      • 2.Rc7#
  • Tries
    • 1.Rdxd5?
      • threat
        • 2.Rd4#
        • 2.Rc5#
      • 1...Qxd5
        • 2.Rg4#
      • 1...Rxg8
        • 2.Rc5#
      • 1...Sxd5
        • 2.Qc7#
      • 1...c2
        • 2.Rc5#
      • 1...Qd4
        • 2.Rxd4#
        • 2.Rc5#
      • 1...Rf7
        • 2.Rc5#
      • 1...d2
        • 2.Rd4#
      • 1...Qxe3!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sb6#
        • 2.Qxc3#
      • 1...Qxd5
        • 2.Qd4#
      • 1...Rxg8
        • 2.Qxc3#
      • 1...Sxd5
        • 2.Qxc3#
      • 1...Qd4
        • 2.Sb6#
        • 2.Qxd4#
      • 1...Qe5
        • 2.Sb6#
      • 1...Rb6
        • 2.Sxb6#
        • 2.Qxc3#
      • 1...Rhf6
        • 2.Sb6#
      • 1...Rff6
        • 2.Sb6#
      • 1...Rf7
        • 2.Qxc3#
      • 1...Sa2
        • 2.Sb6#
      • 1...c2
        • 2.Sb6#
        • 2.Qc3#
      • 1...b6
        • 2.Sxb6#
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(e);OGATEB::R(E),XQ(e)
    • S(c);N_GUARD::R(H)
  • Tries
    • Try
      • R(H);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(e);OGATEB,P_SPINQ(e),XR(H)::R(E)
        • R(i);XB(J)::R1(H)
        • S(c);N_GUARD,P_SPINS(c),XR(H)::QAR(I)
        • P(a);::B(J)+R(H),DCHECK
        • R(i);::R1(H)
        • P(b);::B(J)+R(H),DCHECK
      • Refutation
        • Q(e);XP(A)
  • Actual
    • S(G);XP(f)
    • Threat
      • DUALS(2)
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),XS(G)::QAR1(I)
      • R(i);XB(J)::QAR1(I),XP(a)
      • S(c);P_SPINS(c),XS(G)::QAR1(I),XP(a)
      • Q(e);::B(J)+S(G),DCHECK
      • R(g);::B(J)+S(G),DCHECK
      • R(i);::B(J)+S(G),DCHECK
      • R(i);::QAR1(I),XP(a)
      • S(c);::B(J)+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).