MESON Chess Problem Database

Problem Display
PID: 99127 (4RbN1/1N2nP2/R2pn3/4k3/4P3/K3P3/4Q3/1B6 w - - 0 1)

Fleck, Ferenc

Magyar Sakkelet, 1985

4RbN1/1N2nP2/R2pn3/4k3/4P3/K3P3/4Q3/1B6

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qh5#
    • 1...Sc6
      • 2.Qh5#
      • 2.Qh2#
    • 1...Sg6
      • 2.Qh5#
      • 2.Qb2#
    • 1...Sc8
      • 2.Qh5#
      • 2.Qb2#
      • 2.Qh2#
    • 1...Sxg8
      • 2.Qb2#
  • Tries
    • 1.Rxe7?
      • threat
        • 2.Qh5#
        • 2.Qb2#
        • 2.Qh2#
      • 1...Bh6
        • 2.Qb2#
      • 1...d5
        • 2.Rxe6#
        • 2.Qh5#
        • 2.Qh2#
      • 1...Bxe7!
    • 1.Qh5+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sg5!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Sc4#
      • 1...Sxg8
        • 2.Qb2#
      • 1...Sc6
        • 2.Qh2#
      • 1...Sd5
        • 2.Qh5#
      • 1...Sf5
        • 2.Qb5#
      • 1...Sg6
        • 2.Qb5#
        • 2.Qh5#
        • 2.Qb2#
      • 1...Sc8
        • 2.Qb5#
        • 2.Qh5#
        • 2.Qb2#
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,P_SPINS(c)::QAR(B)
    • S(d);P_SPINS(c),XS(J)::QAB(B)
  • Tries
    • Try
      • R(I);P_PINS(c),XS(d)
      • Threat
        • DUALS(3)
      • Vars
        • B(e);::QAB(B)
      • Refutation
        • B(e);N_SPINS(c),XR(I)
    • Try
      • Q(B);CHECK
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAR1(B),XS(d)
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • S(G);XP(b)
    • Threat
      • S(G)
    • Vars
      • S(d);P_PINS(G),P_SPINS(c),XS(J)::QAB(B)
      • S(d);P_PINS(G),P_SPINS(c)::QAB(B)
      • S(d);N_GUARD,P_PINS(G),P_SPINS(c)::QAR(B)
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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).