MESON Chess Problem Database

Problem Display
PID: 6764 (8/8/8/3N4/1Q6/1R6/4k3/7K w - - 0 1)

Zickermann, Albert

Kieler Neueste Nachrichten, 1933

8/8/8/3N4/1Q6/1R6/4k3/7K

#2

4 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Re3+?
      • 1...Kf1
        • 2.Qe1#
        • 2.Qf8#
        • 2.Qf4#
      • 1...Kf2
        • 2.Qe1#
        • 2.Qf8#
        • 2.Qf4#
      • 1...Kd1!
    • 1.Qd2+?
      • 1...Kf1
        • 2.Se3#
        • 2.Rb1#
        • 2.Rf3#
      • 1...Kxd2!
  • Keys
    • 1.Rb2+!
      • 1...Kd1
        • 2.Qd2#
      • 1...Kf1
        • 2.Se3#
      • 1...Kd3
        • 2.Rd2#
      • 1...Kf3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • R(B);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::S(D)
      • K(a);S_FLIGHT::R1(B)
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).