MESON Chess Problem Database

Problem Display
PID: 258093 (K3N3/3k2P1/6P1/8/8/4Q3/4B3/8 w - - 0 1)

Costachel, Octav

Die Schwalbe, 1931

K3N3/3k2P1/6P1/8/8/4Q3/4B3/8

#2

6 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5?
      • 1...Kc6
        • 2.Qd6#
        • 2.Qb5#
      • 1...Kc8
        • 2.Qc7#
      • 1...Kd8!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Kc8
        • 2.Sd6#
        • 2.Bg4#
        • 2.Ba6#
        • 2.Qc7#
      • 1...Kxe7!
  • Keys
    • 1.Qg5!
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Bg4#
      • 1...Kc8
        • 2.Bg4#
      • 1...Kxe8
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • K(a);N_GUARD,S_FLIGHT::B(A)
      • K(a);N_GUARD,S_FLIGHT,XS(F)::B(A)
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).