MESON Chess Problem Database

Problem Display
PID: 229380 (4K3/1p1R4/2k2bN1/Q7/8/8/8/8 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2004

4K3/1p1R4/2k2bN1/Q7/8/8/8/8

#2

4 + 3

6490 yacpdb 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Se7#
    • 1...Bb2
      • 2.Se7#
    • 1...Bc3
      • 2.Se7#
    • 1...Bd4
      • 2.Se7#
    • 1...Bh4
      • 2.Se5#
    • 1...Be5
      • 2.Sxe5#
      • 2.Se7#
    • 1...Bg5
      • 2.Se5#
    • 1...Be7
      • 2.Se5#
      • 2.Sxe7#
    • 1...Bg7
      • 2.Se7#
    • 1...Bd8
      • 2.Se5#
    • 1...Bh8
      • 2.Se7#
    • 1...b5
      • 2.Qc7#
    • 1...b6
      • 2.Qd5#
  • Keys
    • 1.Qb4!
      • 1...b5
        • 2.Qd6#
      • 1...Ba1
        • 2.Se7#
      • 1...Bb2
        • 2.Se7#
      • 1...Bc3
        • 2.Se7#
      • 1...Bd4
        • 2.Se7#
      • 1...Bh4
        • 2.Se5#
      • 1...Be5
        • 2.Sxe5#
        • 2.Se7#
      • 1...Bg5
        • 2.Se5#
      • 1...Be7
        • 2.Se5#
        • 2.Sxe7#
      • 1...Bg7
        • 2.Se7#
      • 1...Bd8
        • 2.Se5#
      • 1...Bh8
        • 2.Se7#
      • 1...b6
        • 2.Qc4#

Anticipated by 77638(1977)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::S(B)
    • P(c);SBLOCK::QAR1(A)
    • P(c);SBLOCK::QAB1(A)
  • Actual
    • Q(A);
    • Vars
      • P(c);SBLOCK::QAR1(A)
      • B(b);N_GUARD::S(B)
      • P(c);SBLOCK::QAR2(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).