MESON Chess Problem Database

Problem Display
PID: 27234 (3N4/B2R4/kq2N3/3R4/1P1P4/6K1/8/8 w - - 0 1)

Lebeck, Donald

Mate in Two!! (Lebeck), 1992

3N4/B2R4/kq2N3/3R4/1P1P4/6K1/8/8

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Ra5#
    • 1...Qa5
      • 2.Rxa5#
    • 1...Qc6
      • 2.Ra5#
    • 1...Qxe6
      • 2.Ra5#
    • 1...Qb7
      • 2.Ra5#
  • Keys
    • 1.Rb7!
      • 1...Qc7+
        • 2.Sxc7#
      • 1...Qd6+
        • 2.Rxd6#
      • 1...Qxd4
        • 2.Sc7#
        • 2.Ra5#
      • 1...Qxa7
        • 2.Sc7#
        • 2.Ra5#
      • 1...Qxd8
        • 2.Sc5#
      • 1...Qxb4
        • 2.Sc7#
      • 1...Qxe6
        • 2.Ra5#
      • 1...Qxb7
        • 2.Ra5#
      • 1...Qa5
        • 2.Rxa5#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qb5
        • 2.Sc7#
      • 1...Qc6
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD,XP(C)::R1(D)
    • Q(b);N_GUARD::R1(D),XQ(b)
    • Q(b);N_GUARD::R1(D)
    • Q(b);N_GUARD,XS(E)::R1(D)
  • Actual
    • R(G);
    • Vars
      • Q(b);CHECK,N_GUARD::S(E),XQ(b)
      • Q(b);CHECK,OGATEB::R(D),XQ(b)
      • Q(b);N_GUARD,XS(H)::S(E)
      • Q(b);N_GUARD,XP(B)::S(E)
      • Q(b);N_GUARD,XS(E)::R1(D)
      • Q(b);N_GUARD,XR(G)::R1(D)
      • Q(b);N_GUARD::R1(D),XQ(b)
      • Q(b);N_GUARD::S(E),XQ(b)
      • Q(b);N_GUARD::S(E)
      • Q(b);N_GUARD::R1(D)
HTML5 logo

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).