MESON Chess Problem Database

Problem Display
PID: 110683 (1n6/p2p4/k1qRn3/1R1B4/KP2N3/8/8/8 w - - 0 1)

Holladay, Edgar Dinwiddie

American Chess Bulletin, 1952

1n6/p2p4/k1qRn3/1R1B4/KP2N3/8/8/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Ra5#
    • 1...Qxd6
      • 2.Bb7#
    • 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.Bc4!
      • 1...Sc5+
        • 2.Sxc5#
      • 1...Qxd6
        • 2.Rxb8#
      • 1...Qb6
        • 2.Rbxb6#
      • 1...Sd4
        • 2.Sc5#
      • 1...Sf4
        • 2.Sc5#
      • 1...Sg5
        • 2.Sc5#
      • 1...Sc7
        • 2.Sc5#
      • 1...Sg7
        • 2.Sc5#
      • 1...Sd8
        • 2.Sc5#
      • 1...Sf8
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINR(D)::R1(D)
    • Q(b);N_PINR(D),N_SPINQ(b),OGATE,XR(F)::B(E)
    • S(c);N_GUARD::S(C)
    • S(c);CHECK,N_GUARD::S(C),XS(c)
  • Actual
    • B(E);
    • Vars
      • S(c);CHECK,N_GUARD::S(C),XS(c)
      • Q(b);N_PINR(D),N_SPINQ(b),XR(F)::B(E)+R(D),XS(f)
      • Q(b);N_PINR(D)::B(E)+R(D),DCHECK,XQ(b)
      • S(c);N_GUARD::S(C)
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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).