MESON Chess Problem Database

Problem Display
PID: 136536 (1n1kr1b1/1K1p4/3Qp3/4N3/8/8/8/8 w - - 0 1)

Djurasevic, Branislav

Source?, 0000

1n1kr1b1/1K1p4/3Qp3/4N3/8/8/8/8

#2

3 + 6

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Qxb8#
    • 1...Rf8
      • 2.Qxf8#
    • 1...Bf7
      • 2.Sxf7#
    • 1...Bh7
      • 2.Sf7#
    • 1...Sa6
      • 2.Sc6#
      • 2.Qxd7#
    • 1...Sc6
      • 2.Sxc6#
      • 2.Qxd7#
  • Tries
    • 1.Kxb8?
      • threat
        • 2.Sc6#
        • 2.Qxd7#
      • 1...Rf8
        • 2.Qxf8#
        • 2.Qxd7#
      • 1...Re7!
    • 1.Sg6?
      • threat
        • 2.Qc7#
        • 2.Qxb8#
        • 2.Qb6#
      • 1...Re7
        • 2.Qxe7#
        • 2.Qxb8#
      • 1...Rf8
        • 2.Qe7#
        • 2.Qxb8#
        • 2.Qxf8#
      • 1...Sc6
        • 2.Qc7#
      • 1...Sa6!
  • Keys
    • 1.Qxd7+!
      • 1...Sxd7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(e);SBLOCK::QAR2(B),XS(c)
    • R(e);OGATEB::QAR2(B),XR(e)
    • B(f);N_GUARD::S(A),XB(f)
    • B(f);N_GUARD::S(A)
  • Tries
    • Try
      • K(C);P-FLIGHT,XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • R(e);
    • Try
      • S(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
  • Actual
    • Q(B);CHECK,XP(b)
    • Vars
      • S(c);SBLOCK,XQ(B)::S(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).