MESON Chess Problem Database

Problem Display
PID: 173487 (K7/8/1N2p2N/4k3/5p2/B2pnP2/2b4Q/8 w - - 0 1)

Tuzar, Vaclav

Besedy lidu, 1893

K7/8/1N2p2N/4k3/5p2/B2pnP2/2b4Q/8

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qb2#
    • 1...Bd1
      • 2.Qb2#
    • 1...Bb3
      • 2.Qb2#
    • 1...Ba4
      • 2.Qb2#
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qa1#
        • 2.Qg7#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kf6
        • 2.Sd7#
      • 1...Sd1
        • 2.Qg7#
      • 1...Bb1
        • 2.Qg7#
      • 1...Bd1
        • 2.Qg7#
      • 1...Sf1
        • 2.Qg7#
      • 1...Sg2
        • 2.Qa1#
      • 1...Sc4
        • 2.Qg7#
      • 1...Sg4
        • 2.Qa1#
      • 1...Sd5
        • 2.Sd7#
      • 1...Sf5
        • 2.Sg4#

This is a version of 129855

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • B(a);OGATE::QAB(A)
  • Actual
    • Q(A);N_PINP(d)
    • Threat
      • DUALS(2)
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT::QAB(A)
      • K(e);S_FLIGHT::S(D)
      • S(c);::QAB(A)
      • B(a);::QAB(A)
      • S(c);SBLOCK::S(D)
      • S(c);N_GUARD,SBLOCK::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).