MESON Chess Problem Database

Problem Display
PID: 245534 (4N3/2P5/8/q2kNK2/2R5/8/8/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2006

4N3/2P5/8/q2kNK2/2R5/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.c8Q?
      • threat
        • 2.Qe6#
        • 2.Qb7#
        • 2.Qd7#
        • 2.Qc6#
      • 1...Qb4
        • 2.Qe6#
        • 2.Qc6#
      • 1...Qc7
        • 2.Qe6#
      • 1...Qd8
        • 2.Qe6#
        • 2.Qb7#
        • 2.Qc5#
        • 2.Qc6#
        • 2.Qxd8#
      • 1...Qa3
        • 2.Qe6#
        • 2.Qb7#
        • 2.Qc6#
      • 1...Qa4
        • 2.Qe6#
        • 2.Qc5#
      • 1...Qb5
        • 2.Qe6#
      • 1...Qc5
        • 2.Qe6#
        • 2.Qxc5#
      • 1...Qa6
        • 2.Qc5#
      • 1...Qa7
        • 2.Qe6#
        • 2.Qc6#
      • 1...Qa8
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qc5#
        • 2.Qxa8#
      • 1...Qb6!
    • 1.c8S?
      • threat
        • 2.Se7#
        • 2.Sf6#
      • 1...Qb4
        • 2.Sf6#
        • 2.Sc7#
      • 1...Qb6
        • 2.Sxb6#
        • 2.Se7#
      • 1...Qc7
        • 2.Sf6#
        • 2.Sxc7#
      • 1...Qa3
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
      • 1...Qc5
        • 2.Sf6#
      • 1...Qa6
        • 2.Se7#
        • 2.Sc7#
      • 1...Qa7
        • 2.Sf6#
      • 1...Qd8!
  • Keys
    • 1.Sf6+!
      • 1...Kd6
        • 2.c8S#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);
      • Threat
        • DUALS(4)
      • Vars
        • Q(a);::QAB1(D)
        • Q(a);N_GUARD::QAR1(D)
      • Refutation
        • Q(a);
    • Try
      • P(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::S(E)
      • Refutation
        • Q(a);
  • Actual
    • S(E);CHECK
    • Vars
      • K(b);P-FLIGHT,P_PINS(B)::P=S
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).