MESON Chess Problem Database

Problem Display
PID: 247932 (8/8/1p6/1N6/1kN5/1B6/8/1K1Q4 w - - 0 1)

Lukyanov, V?

Uralski Problemist, 2006

8/8/1p6/1N6/1kN5/1B6/8/1K1Q4

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sca3?
      • 1...Kc5
        • 2.Qd6#
      • 1...Ka5!
    • 1.Sc7?
      • 1...Kc3
        • 2.Sd5#
      • 1...Kc5
        • 2.Qd6#
      • 1...b5!
    • 1.Ba4?
      • 1...Kxc4
        • 2.Qd4#
      • 1...Kc5!
    • 1.Qg1?
      • 1...Kxb5
        • 2.Qxb6#
      • 1...Kxb3!
    • 1.Qd6+?
      • 1...Kxb5
        • 2.Qxb6#
      • 1...Kxb3!
  • Keys
    • 1.Qd4!
      • 1...Kxb3
        • 2.Sd2#
      • 1...Kxb5
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(a);S_FLIGHT::S(E)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(B),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(B),XP(b)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,XB(C)::S(D)
      • K(a);OGATEB,P-FLIGHT,XS(E)::QAR1(B),XP(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).