MESON Chess Problem Database

Problem Display
PID: 183141 (2Q5/2N5/3p3K/3Np3/1r1k4/1pR2P1b/1p1p4/3rb3 w - - 0 1)

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

Munchner Neueste Nachrichten, 1907

2Q5/2N5/3p3K/3Np3/1r1k4/1pR2P1b/1p1p4/3rb3

#2

6 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qh8#
  • Tries
    • 1.Sb5+?
      • 1...Rxb5
        • 2.Qc4#
      • 1...Kxd5!
    • 1.Qg4+?
      • 1...e4
        • 2.Qxe4#
        • 2.Qg7#
      • 1...Bxg4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Se2#
      • 1...Kxc3
        • 2.Sb5#
      • 1...exf4
        • 2.Qh8#
      • 1...Rc4
        • 2.Sb5#
      • 1...e4
        • 2.Qh8#
      • 1...Bf1
        • 2.Sce6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(i);OGATEB::QAB(F)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(g);XS(E)::QAR1(F)
      • Refutation
        • K(h);P-FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Refutation
        • B(f);XQ(F)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(h);S_FLIGHT,XR(A)::QAR(F)+S(E),DCHECK
      • P(i);OGATEB,XS(C)::QAB(F)
      • R(g);N_GUARD::S(E)
      • P(i);OGATEB::QAB(F)
      • B(f);N_GUARD::S(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).