MESON Chess Problem Database

Problem Display
PID: 244941 (1n6/4p3/5p2/R4P2/B3k3/1Q2P2K/r1p3P1/8 w - - 0 1)

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

Tidskrift for Schack, 1916

1n6/4p3/5p2/R4P2/B3k3/1Q2P2K/r1p3P1/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Bc6#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sd7
      • 2.Bc6#
  • Tries
    • 1.Re5+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...fxe5!
  • Keys
    • 1.Bb5!
      • threat
        • 2.Qe6#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Bd3#
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sd7
        • 2.Bc6#
      • 1...e5
        • 2.Qd3#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD::B(E)
    • S(f);N_GUARD::B(E),XS(f)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XR(F)::QAR1(B)
      • Refutation
        • P(d);XR(F)
  • Actual
    • B(E);
    • Threat
      • QAR2(B)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • K(c);S_FLIGHT,XP(G)::R(F)+B(E),DCHECK
      • S(f);N_GUARD::B(E),XS(f)
      • S(f);N_GUARD::B(E)
      • P(e);SBLOCK::QAB1(B)
      • P(e);::QAR2(B),XP(e)
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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).