MESON Chess Problem Database

Problem Display
PID: 155062 (5N2/1P6/p7/K6p/4k2p/2PN3P/R4P2/1Q6 w - - 0 1)

Kratz, Jurgen

Die Schwalbe, 2014

5N2/1P6/p7/K6p/4k2p/2PN3P/R4P2/1Q6

#2

9 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qh1#
  • Tries
    • 1.Qe1+?
      • 1...Kf3
        • 2.Qh1#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kxd3!
    • 1.Qb4+?
      • 1...Kxd3
        • 2.Qd4#
      • 1...Kf3
        • 2.Se1#
      • 1...Kf5
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qb5?
      • 1...Kf3
        • 2.Qc6#
        • 2.Qd5#
      • 1...axb5!
    • 1.b8Q?
      • 1...Kf3
        • 2.Se1#
        • 2.Qh1#
        • 2.Q1b7#
        • 2.Q8b7#
        • 2.Qa8#
      • 1...Kf5
        • 2.Qf4#
        • 2.Qe5#
      • 1...Kd5!
  • Keys
    • 1.Qb6!
      • 1...Kxd3
        • 2.Qd4#
      • 1...Kf3
        • 2.Qc6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kf5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);OGATE,S_FLIGHT::QAB1(A)
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAR1(A)
        • K(a);S_FLIGHT::S(E)
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Refutation
        • P(d);XQ(A)
    • Try
      • P(H);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT,XS(E)::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::QAB1(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).