MESON Chess Problem Database

Problem Display
PID: 12294 (8/7B/5Q2/3PN3/K1pkN3/8/8/8 w - - 0 1)

Burlyaev, Nikolai Romanovich

Problem (Zagreb), 1977

8/7B/5Q2/3PN3/K1pkN3/8/8/8

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
    • 1...Kxd5
      • 2.Qd6#
  • Tries
    • 1.Ka3?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...c3!
    • 1.Kb4?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...c3!
    • 1.Ka5?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...c3!
    • 1.Kb5?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...c3!
    • 1.Sg4+?
      • 1...Kxd5
        • 2.Se3#
        • 2.Qd6#
      • 1...Kd3!
    • 1.Bg6?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kxd5
        • 2.Qd6#
      • 1...c3!
    • 1.Qb6+?
      • 1...Kxd5
        • 2.Qd6#
      • 1...Kxe5!
  • Keys
    • 1.Sc3!
      • 1...Kxc3
        • 2.Sf3#
      • 1...Ke3
        • 2.Sxc4#
      • 1...Kc5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAB1(E)
    • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • S(D);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • P(a);
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XS(D)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT,XS(B)::QAB(E)+S(D)
      • K(b);S_FLIGHT::S(D),XP(a)
      • K(b);S_FLIGHT::S(D)
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).