MESON Chess Problem Database

Problem Display
PID: 11957 (8/8/7Q/5P2/1K2kB2/5N2/6R1/8 w - - 0 1)

Riczu, Lajos

Skakbladet, 1973

8/8/7Q/5P2/1K2kB2/5N2/6R1/8

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qe6#
  • Tries
    • 1.Bd2?
      • 1...Kxf3
        • 2.Qc6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Kd3!
    • 1.Re2+?
      • 1...Kd3
        • 2.Qa6#
      • 1...Kd5
        • 2.Re5#
        • 2.Qd6#
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qg5#
      • 1...Kxf3!
    • 1.Qd6?
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kxf3!
  • Keys
    • 1.Bc1!
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxf3
        • 2.Qc6#
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(F)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT,XS(B)::QAB(F)
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);OGATEB,S_FLIGHT,XP(E)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT,XP(E)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT,XP(E)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XS(B)::QAB(F)
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);OGATEB,S_FLIGHT,XP(E)::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).