MESON Chess Problem Database

Problem Display
PID: 237824 (8/1Q6/3P4/4kP2/4B3/6P1/3K4/8 w - - 0 1)

Speckmann, Werner

Arbejder-Skak, 1965

8/1Q6/3P4/4kP2/4B3/6P1/3K4/8

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...Kf6
      • 2.Qe7#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxd6!
    • 1.Kd3?
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxd6!
    • 1.Ke3?
      • threat
        • 2.Qe7#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kxd6!
    • 1.Qc6?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf6!
  • Keys
    • 1.f6!
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kxf6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(F)
    • K(a);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR2(F)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR2(F)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR2(F)
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XP(E)::QAB1(F)
      • K(a);P-FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XP(D)::QAB1(F)
HTML5 logo

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).