MESON Chess Problem Database

Problem Display
PID: 183119 (1n2r3/QK1p1Bn1/3NP3/1p1k4/1pN5/2b2P2/2P5/8 w - - 0 1)

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

Duna Zeitung, 1907

1n2r3/QK1p1Bn1/3NP3/1p1k4/1pN5/2b2P2/2P5/8

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.e7#
    • 1...Sh5
      • 2.e7#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sfe3#
      • 1...Kxc4
        • 2.Se3#
      • 1...Sxf5
        • 2.e7#
      • 1...bxc4
        • 2.Qa5#
      • 1...Bd2
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD::B(H)+P(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(d);S_FLIGHT,XS(C)::S(D)
      • S(f);N_GUARD,XS(D)::B(H)+P(E)
      • P(c);OGATEB,SBLOCK,XS(C)::QAR(F)
      • B(a);N_GUARD::QAR1(F)
      • B(a);N_GUARD::QAR1(F),XB(a)
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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).