MESON Chess Problem Database

Problem Display
PID: 72579 (Q7/2r1p3/8/5B2/1Np5/3q2p1/Np6/1k2K2R w K - 0 1)

van Dijk, Johannes

Tijdschrift vd KNSB, 1936

Q7/2r1p3/8/5B2/1Np5/3q2p1/Np6/1k2K2R

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.0-0#
    • 1...Qe4+
      • 2.Kd2#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qd1#
      • 1...Qe4+
        • 2.Kd2#
      • 1...Ka1!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qd1#
      • 1...Qe4+
        • 2.Kd2#
      • 1...Ka1
        • 2.Sc3#
      • 1...Qc2
        • 2.0-0#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);::0-0
    • Q(c);CHECK::R(B)+K(A)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • Q(c);CHECK::R(B)+K(A)
      • Refutation
        • K(a);N_SPINQ(c),P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • Q(c);CHECK::R(B)+K(A)
      • K(a);N_SPINQ(c),P-FLIGHT::QAR(F)+S(C)
      • Q(c);::0-0
HTML5 logo

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).