MESON Chess Problem Database

Problem Display
PID: 59258 (KBB5/pp2pp2/1pNn4/3k1P2/3N3q/2Qb1P2/1R1R4/3r4 w - - 0 1)

Bartok, Gyorgy

4th Prize, Magyar Sakkelet, 1951

KBB5/pp2pp2/1pNn4/3k1P2/3N3q/2Qb1P2/1R1R4/3r4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rb5#
    • 1...Se4
      • 2.Sb4#
    • 1...Sb5
      • 2.Sb4#
    • 1...Sxf5
      • 2.Sb4#
    • 1...Sxc8
      • 2.Sb4#
    • 1...Se8
      • 2.Sb4#
    • 1...e5
      • 2.Sb4#
    • 1...f6
      • 2.Be6#
  • Tries
    • 1.Rb5+?
      • 1...Sxb5
        • 2.Sb4#
      • 1...Bxb5!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc7#
      • 1...Sxf5
        • 2.Rb5#
      • 1...Sxc8
        • 2.Rb5#
      • 1...fxe6
        • 2.Bxe6#
      • 1...Qc4
        • 2.Sxe7#
      • 1...Sc4
        • 2.Sb4#
      • 1...Se4
        • 2.Sb4#
      • 1...Sb5
        • 2.Rxb5#
      • 1...Se8
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD,S_CUTB(b)::R(A)
    • S(f);::S(G)
    • S(f);XP(F)::S(G)
    • S(f);XB(J)::S(G)
    • P(i);SBLOCK::S(G)
    • P(j);N_GUARD::B(J)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(f);XR(A)::S(G)
      • Refutation
        • B(b);XR(A)
  • Actual
    • S(E);P_PINB(b)
    • Threat
      • S(E)
    • Vars
      • S(f);N_GUARD,XP(F)::R(A)
      • S(f);N_GUARD,XB(J)::R(A)
      • P(j);OGATE,XS(E)::B(J),XP(j)
      • Q(c);N_GUARD::S(G),XP(i)
      • S(f);S_CUTQ(c)::S(G)
      • S(f);N_GUARD::R(A),XS(f)
      • S(f);N_GUARD::R(A)
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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).