MESON Chess Problem Database

Problem Display
PID: 206913 (8/Q2pB3/2b5/3pk3/1P4P1/5K2/1Nq5/7r w - - 0 1)

Kuiper, HR

One Hundred and Twenty Problems, 1845

8/Q2pB3/2b5/3pk3/1P4P1/5K2/1Nq5/7r

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qe3#
    • 1...Qxb2
      • 2.Qe3#
    • 1...Qh2
      • 2.Qe3#
  • Keys
    • 1.Qd4+!
      • 1...Kxd4
        • 2.Bf6#
      • 1...Ke6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::QAR2(E)
    • Q(b);N_GUARD,XS(A)::QAR2(E)
  • Actual
    • Q(E);CHECK
    • Vars
      • K(d);S_FLIGHT,XQ(E)::B(F)
      • K(d);OGATE,P-FLIGHT::QAR1(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).