MESON Chess Problem Database

Problem Display
PID: 93606 (1n3bN1/5P1n/3p4/1QpkpK2/1p6/1N1P4/8/8 w - - 0 1)

Deschaso, Z

HM., Parallele 50, 1950

1n3bN1/5P1n/3p4/1QpkpK2/1p6/1N1P4/8/8

#2

6 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh6
      • 2.Se7#
    • 1...Be7
      • 2.Sxe7#
    • 1...Bg7
      • 2.Se7#
    • 1...Sg5
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sa6
      • 2.Qb7#
    • 1...Sc6
      • 2.Qc4#
    • 1...Sd7
      • 2.Qb7#
    • 1...e4
      • 2.dxe4#
  • Tries
    • 1.Qa6?
      • 1...Bh6
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.Se7#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sc6
        • 2.Qc4#
      • 1...Sd7
        • 2.Qb7#
        • 2.Qa8#
      • 1...c4
        • 2.Qxc4#
        • 2.Qb5#
        • 2.dxc4#
      • 1...e4
        • 2.dxe4#
      • 1...Sxa6!
  • Keys
    • 1.Qe8!
      • 1...Sd7
        • 2.Qa8#
      • 1...Bh6
        • 2.Se7#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.Se7#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sa6
        • 2.Qa8#
      • 1...Sc6
        • 2.Qe6#
      • 1...c4
        • 2.Qb5#
      • 1...e4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::S(F)
    • B(h);N_GUARD::S(F),XB(h)
    • S(f);N_GUARD::S(F)
    • S(f);N_GUARD::S(F),XS(f)
    • S(g);N_GUARD::QAB(C)
    • S(g);SBLOCK::QAB1(C)
    • P(d);OGATE::P(B),XP(d)
  • Tries
    • Try
      • Q(C);N_PINP(b)
      • Vars
        • B(h);N_GUARD::S(F)
        • B(h);N_GUARD::S(F),XB(h)
        • S(f);N_GUARD::S(F)
        • S(f);N_GUARD::S(F),XS(f)
        • S(g);SBLOCK::QAB1(C)
        • P(d);OGATE::P(B),XP(d)
      • Refutation
        • S(g);XQ(C)
  • Actual
    • Q(C);N_PINP(b)
    • Vars
      • S(g);OGATE::QAB(C)
      • B(h);N_GUARD::S(F)
      • B(h);N_GUARD::S(F),XB(h)
      • S(f);N_GUARD::S(F)
      • S(f);N_GUARD::S(F),XS(f)
      • S(g);SBLOCK::QAB1(C)
      • P(b);OGATEB::QAR2(C)
      • P(d);OGATE::QAB1(C),XP(d)
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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).