MESON Chess Problem Database

Problem Display
PID: 206816 (6k1/2p4q/2P1K3/4B1N1/6P1/3p4/B2P1Q2/7R w - - 0 1)

Luptak, Juraj

Sachova skladba, 1991

6k1/2p4q/2P1K3/4B1N1/6P1/3p4/B2P1Q2/7R

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rh8#
      • 2.Qf7#
    • 1...Qxh1
      • 2.Qf7#
    • 1...Qh2
      • 2.Kd7#
      • 2.Ke7#
      • 2.Qf7#
    • 1...Qh3
      • 2.Kd7#
      • 2.Ke7#
      • 2.Qf7#
    • 1...Qh4
      • 2.Kd7#
      • 2.Ke7#
      • 2.Qf7#
    • 1...Qd7+
      • 2.Kxd7#
    • 1...Qe7+
      • 2.Kxe7#
    • 1...Qf7+
      • 2.Qxf7#
    • 1...Qh8
      • 2.Kd7#
      • 2.Ke7#
      • 2.Rxh8#
      • 2.Qf7#
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd8#
      • 1...Qf5+
        • 2.Kxf5#
      • 1...Qd7+
        • 2.Kxd7#
      • 1...Qe7+
        • 2.Kxe7#
      • 1...Qf7+
        • 2.Qxf7#
      • 1...Qg6
        • 2.Rh8#
      • 1...Qh5
        • 2.Qg7#
      • 1...Qh6
        • 2.Kf5#
        • 2.Kd7#
        • 2.Ke7#
      • 1...Qg7
        • 2.Qxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD,XR(A)::QAB1(D)
    • Q(c);CHECK::B(B)+K(I),XQ(c)
    • Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
  • Actual
    • Q(D);
    • Threat
      • QAR(D)
    • Vars
      • Q(c);CHECK::B(B)+K(I),XQ(c)
      • Q(c);CHECK,N_GUARD::QAB1(D),XQ(c)
      • Q(c);OGATE,P_PINQ(D)::R1(A)
      • Q(c);N_GUARD::QAR1(D)
      • Q(c);N_GUARD::QAR1(D),XQ(c)
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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).