MESON Chess Problem Database

Problem Display
PID: 120155 (3k3K/1P3Q1p/1nb5/1p1pP3/5B2/5npq/8/2r5 w - - 0 1)

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

Deutsche Schachzeitung, 1904

3k3K/1P3Q1p/1nb5/1p1pP3/5B2/5npq/8/2r5

#2

5 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Bg5#
    • 1...Sg1
      • 2.Bg5#
    • 1...Sd2
      • 2.Bg5#
    • 1...Sh2
      • 2.Bg5#
    • 1...Sd4
      • 2.Bg5#
    • 1...Sh4
      • 2.Bg5#
    • 1...Sxe5
      • 2.Bg5#
    • 1...Sg5
      • 2.Bxg5#
  • Tries
    • 1.b8Q+?
      • 1...Sc8
        • 2.Qbc7#
      • 1...Qc8!
  • Keys
    • 1.e6!
      • threat
        • 2.Bc7#
      • 1...Bxb7
        • 2.Qf8#
      • 1...Bd7
        • 2.e7#
      • 1...Be8
        • 2.Qf6#
      • 1...Se5
        • 2.Bg5#
      • 1...Sd7
        • 2.e7#
      • 1...Sa8
        • 2.b8Q#
        • 2.b8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • S(b);N_GUARD::B(A)
    • S(b);N_GUARD,XP(B)::B(A)
    • S(b);N_GUARD::B(A),XS(b)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(g);P_SPINS(g)::QAB1(C)
      • Refutation
        • Q(d);P_SPINQ(d)
  • Actual
    • P(B);
    • Threat
      • B(A)
    • Vars
      • B(h);N_GUARD,XP(C)::QAR2(D)
      • B(h);SBLOCK::P(B)
      • B(h);SBLOCK::QAB(D)
      • S(b);N_GUARD::B(A)
      • S(g);SBLOCK::P(B)
      • S(g);N_GUARD::P=Q
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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).