MESON Chess Problem Database

Problem Display
PID: 79523 (8/5R2/R7/8/3k4/2NN4/8/KQ6 w - - 0 1)

Caburis, L

Deutsche Zeitung im Ostland, 1940

8/5R2/R7/8/3k4/2NN4/8/KQ6

#2

6 + 1

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Kb2?
      • 1...Kc4
        • 2.Ra4#
        • 2.Rf4#
      • 1...Ke3!
    • 1.Ra3?
      • 1...Kc4
        • 2.Rf4#
      • 1...Ke3!
    • 1.Rd6+?
      • 1...Ke3
        • 2.Qc1#
        • 2.Qe1#
      • 1...Kc4
        • 2.Rc7#
        • 2.Qb4#
      • 1...Kxc3!
    • 1.Rf3?
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxc3!
    • 1.Qc2?
      • 1...Kc4
        • 2.Ra4#
        • 2.Rf4#
      • 1...Ke3!
  • Keys
    • 1.Se5!
      • 1...Kxc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5
        • 2.Qb6#
      • 1...Kxe5
        • 2.Qe4#

Anticipated by 76028(1925), 76207(1926)

This anticipates 176153(1953), 176168(1959), 104712(1969), 103493(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(F);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT,XS(D)::QAR1(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).