MESON Chess Problem Database

Problem Display
PID: 166045 (8/8/1p6/8/8/2K2Q2/B5n1/kb6 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Die Schwalbe, 2017

8/8/1p6/8/8/2K2Q2/B5n1/kb6

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa2
      • 2.Qa8#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qxb1#
      • 1...Kxa2
        • 2.Qa6#
      • 1...Se1!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qxb1#
      • 1...Kxa2
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XB(A)::QAR(C)
  • Tries
    • Try
      • Q(C);P_PINB(b)
      • Threat
        • QAR1(C),XB(b)
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XB(A)::QAR(C)
      • Refutation
        • S(c);N_SPINB(b)
  • Actual
    • Q(C);P_PINB(b)
    • Threat
      • QAR1(C),XB(b)
    • Vars
      • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XB(A)::QAR2(C)
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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).