MESON Chess Problem Database

Problem Display
PID: 69439 (Q3K3/8/2n5/4kp2/R4N1P/5P2/3P2P1/6B1 w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1898

Q3K3/8/2n5/4kp2/R4N1P/5P2/3P2P1/6B1

#2

9 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qd8?
      • 1...Sb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se7
        • 2.Qxe7#
        • 2.Qd4#
      • 1...Sa5
        • 2.Qe7#
        • 2.Qd4#
      • 1...Sa7
        • 2.Qe7#
        • 2.Qd4#
      • 1...Sb8
        • 2.Qe7#
        • 2.Qd4#
      • 1...Sxd8!
  • Keys
    • 1.Ra6!
      • 1...Kxf4
        • 2.Bh2#
      • 1...Kd6
        • 2.Qb8#
      • 1...Kf6
        • 2.Bd4#
      • 1...Sb4
        • 2.Sg6#
        • 2.Qb8#
      • 1...Sd4
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qb8#
      • 1...Sa5
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qb8#
      • 1...Sa7
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qb8#
      • 1...Se7
        • 2.Sd3#
        • 2.Qb8#
      • 1...Sb8
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qxb8#
      • 1...Sd8
        • 2.Sd3#
        • 2.Sg6#
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Vars
        • S(c);N_GUARD::QAB1(H)
        • S(c);N_GUARD::QAB1(H),XS(c)
      • Refutation
        • S(c);XQ(H)
  • Actual
    • R(E);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(F)::B(A)
      • K(a);P_SPINS(c),S_FLIGHT::QAB(H)
      • K(a);P_SPINS(c),S_FLIGHT::B(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).