MESON Chess Problem Database

Problem Display
PID: 957 (8/8/3NnB2/8/Nr6/3k3r/1p6/1K2Qb2 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 1994

8/8/3NnB2/8/Nr6/3k3r/1p6/1K2Qb2

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Qd1#
    • 1...Rc4
      • 2.Sxb2#
    • 1...Rd4
      • 2.Sxb2#
    • 1...Re4
      • 2.Sxb2#
    • 1...Rf4
      • 2.Sxb2#
    • 1...Rg4
      • 2.Sxb2#
    • 1...Rh4
      • 2.Sxb2#
    • 1...Be2
      • 2.Qc3#
    • 1...Sd4
      • 2.Sc5#
    • 1...Sf4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sg5
      • 2.Sc5#
    • 1...Sc7
      • 2.Sc5#
    • 1...Sg7
      • 2.Sc5#
    • 1...Sd8
      • 2.Sc5#
    • 1...Sf8
      • 2.Sc5#
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qd1#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Rxd4
        • 2.Sxb2#
      • 1...Sxd4
        • 2.Sc5#
      • 1...Rh2
        • 2.Qe3#
      • 1...Be2
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • R(d);SBLOCK::QAR2(B)
    • R(e);N_GUARD::S(C),XP(b)
    • B(a);SBLOCK::QAR1(B)
    • S(f);N_GUARD::S(C)
    • S(f);N_GUARD::S(C),XS(f)
  • Actual
    • B(E);
    • Threat
      • QAR2(B)
    • Vars
      • K(c);P-FLIGHT,XB(E)::QAR1(B)
      • R(e);N_GUARD,SBLOCK,XB(E)::S(C),XP(b)
      • S(f);N_GUARD,SBLOCK,XB(E)::S(C)
      • R(d);N_GUARD::QAR1(B)
      • B(a);SBLOCK::QAR1(B)
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).