MESON Chess Problem Database

Problem Display
PID: 266212 (1q5B/1P1N1n1B/5pR1/2bb4/2PkP3/1PNp2p1/3P4/6K1 w - - 0 1)

Dharmawan, J

Schakend Nederland, 1978

1q5B/1P1N1n1B/5pR1/2bb4/2PkP3/1PNp2p1/3P4/6K1

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Sb5#
    • 1...Sd6
      • 2.Bxf6#
  • Tries
    • 1.Rg4?
      • threat
        • 2.Sb5#
      • 1...Qxb7
        • 2.exd5#
      • 1...Bxc4
        • 2.e5#
      • 1...Sd6
        • 2.Bxf6#
      • 1...Bc6!
  • Keys
    • 1.Rxf6!
      • threat
        • 2.Sb5#
      • 1...Qxb7
        • 2.Rxf7#
      • 1...Bxc4
        • 2.Rd6#
      • 1...Bc6
        • 2.Rd6#
      • 1...Sd6
        • 2.Rf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);SBLOCK,XP(F)::S(D)
    • S(g);N_GUARD,S_CUTQ(h)::B(K),XP(f)
  • Tries
    • Try
      • R(G);
      • Threat
        • S(D)
      • Vars
        • Q(h);N_GUARD,XP(H)::R(G)+P(F),XB(e)
        • B(e);N_GUARD,XP(E)::R(G)+P(F)
        • S(g);N_GUARD,S_CUTQ(h)::B(K),XP(f)
      • Refutation
        • B(e);
  • Actual
    • R(G);XP(f)
    • Threat
      • S(D)
    • Vars
      • Q(h);N_GUARD,XP(H)::B(K)+R(G),XS(g)
      • B(e);XP(E)::B(K)+R(G),DCHECK
      • B(e);::B(K)+R(G),DCHECK
      • S(g);OGATE::B(K)+R(G)
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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).