MESON Chess Problem Database

Problem Display
PID: 109117 (1N3Q2/1p6/4PN2/r1n1kP2/5p2/p1PB4/K2R1n1r/6B1 w - - 0 1)

Paleis, J

Sahs, 1960

1N3Q2/1p6/4PN2/r1n1kP2/5p2/p1PB4/K2R1n1r/6B1

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Bd4#
    • 1...Sh1
      • 2.Bd4#
    • 1...Sh3
      • 2.Bd4#
    • 1...Sg4
      • 2.Bd4#
    • 1...Sb3
      • 2.Sbd7#
    • 1...Sa4
      • 2.Sbd7#
    • 1...Sa6
      • 2.Sbd7#
    • 1...Sxe6
      • 2.Sbd7#
    • 1...Sd7
      • 2.Sbxd7#
    • 1...f3
      • 2.Bxh2#
    • 1...b5
      • 2.Sc6#
    • 1...b6
      • 2.Sc6#
  • Keys
    • 1.Be4!
      • threat
        • 2.Rd5#
      • 1...Sfxe4
        • 2.Sg4#
      • 1...Scxe4
        • 2.Sfd7#
      • 1...Sxe6
        • 2.Sbd7#
      • 1...f3
        • 2.Bxh2#
      • 1...Sd1
        • 2.Bd4#
      • 1...Sh1
        • 2.Bd4#
      • 1...Sfd3
        • 2.Bd4#
      • 1...Sh3
        • 2.Bd4#
      • 1...Sg4
        • 2.Bd4#
      • 1...Sb3
        • 2.Sbd7#
      • 1...Scd3
        • 2.Sbd7#
      • 1...Sa4
        • 2.Sbd7#
      • 1...Sa6
        • 2.Sbd7#
      • 1...Sd7
        • 2.Sbxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);OGATE,P_PINR(C)::B(A)
    • S(f);N_GUARD::S(I)
    • S(f);N_GUARD,XP(G)::S(I)
    • S(f);N_GUARD::S(I),XS(f)
    • P(d);OGATEB::B(A),XR(b)
    • P(h);N_GUARD::S(I)
  • Actual
    • B(E);
    • Threat
      • R1(C)
    • Vars
      • S(a);N_GUARD,P_PINR(C),SBLOCK,XB(E)::S(H)
      • S(f);N_GUARD,SBLOCK,XB(E)::S(H)
      • S(f);N_GUARD,XP(G)::S(I)
      • P(d);OGATEB::B(A),XR(b)
      • S(a);OGATE,P_PINR(C)::B(A)
      • S(f);N_GUARD::S(I)
      • S(f);N_GUARD::S(I),XS(f)
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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).