MESON Chess Problem Database

Problem Display
PID: 68218 (8/2p5/2NkP3/P1NP4/1r1p3K/B2Q4/4P3/2r2b2 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

La Strategie, 1908

8/2p5/2NkP3/P1NP4/1r1p3K/B2Q4/4P3/2r2b2

#2

9 + 6

81 Chess 1949

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4?
      • threat
        • 2.Sb7#
      • 1...Rxc5
        • 2.Qe5#
      • 1...Rb7
        • 2.Sxb7#
        • 2.Qe5#
      • 1...Kxc5!
    • 1.Qf5?
      • threat
        • 2.Se4#
        • 2.Sb7#
      • 1...d3+
        • 2.Se4#
      • 1...Rxc5
        • 2.Qe5#
      • 1...Rb7
        • 2.Se4#
        • 2.Sxb7#
        • 2.Qe5#
      • 1...Bg2
        • 2.Sb7#
      • 1...Kxc5!
  • Keys
    • 1.e4!
      • threat
        • 2.Sb7#
      • 1...dxe4 ep+
        • 2.Se4#
      • 1...Kxc5
        • 2.Bxb4#
      • 1...Rxc5
        • 2.Qg3#
      • 1...Rb7
        • 2.Sxb7#
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(F)
      • Vars
        • R(a);SBLOCK,XS(F)::QAB1(C)
      • Refutation
        • K(e);P_SPINR(c),S_FLIGHT,XS(F)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);CHECK::S(F)
        • R(a);SBLOCK,XS(F)::QAB1(C)
        • B(b);::S(F)
      • Refutation
        • K(e);P_SPINR(c),S_FLIGHT,XS(F)
  • Actual
    • P(A);
    • Threat
      • S(F)
    • Vars
      • P(d);CHECK,EP,XP(A)::S(F)
      • K(e);OGATEB,P_SPINR(c),S_FLIGHT,XS(F)::B(B),XR(c)
      • R(a);SBLOCK,XS(F)::QAB(C)
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).