MESON Chess Problem Database

Problem Display
PID: 120758 (1kb1K3/8/1nQ5/P4N2/1r1BB2q/P7/3p4/8 w - - 0 1)

Vogel, Peter

Source?, 0000

1kb1K3/8/1nQ5/P4N2/1r1BB2q/P7/3p4/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qa8#
    • 1...Bxf5
      • 2.Qb7#
    • 1...Be6
      • 2.Qb7#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sa4
      • 2.Qd6#
    • 1...Sd7
      • 2.Qd6#
  • Tries
    • 1.Qa8+?
      • 1...Kc7
        • 2.Be5#
      • 1...Sxa8!
  • Keys
    • 1.Qc7+!
      • 1...Kxc7
        • 2.Be5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(e);P_SPINS(d),S_FLIGHT::QAR1(F)
    • B(f);N_GUARD,XS(E)::QAR1(F)
    • B(f);N_GUARD::QAR1(F)
    • B(f);N_GUARD::QAR1(F),XB(f)
    • S(d);::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::B(B)
      • Refutation
        • S(d);XQ(F)
  • Actual
    • Q(F);CHECK
    • Vars
      • K(e);S_FLIGHT,XQ(F)::B(B)
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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).