MESON Chess Problem Database

Problem Display
PID: 155717 (8/2p5/p1PpP1N1/P2k4/K3N1P1/3pP3/3P4/Q7 w - - 0 1)

Knudsen, Carl Christian Rudolph

Skakbladet, 1907

8/2p5/p1PpP1N1/P2k4/K3N1P1/3pP3/3P4/Q7

#2

10 + 5

15422 Problemskak 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd4#
      • 2.Qa2#
    • 1...Kxe4
      • 2.Qh1#
  • Tries
    • 1.Se7+?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qc1#
        • 2.Qa2#
      • 1...Kxe6
        • 2.Qf6#
      • 1...Kxe4!
    • 1.Qd4+?
      • 1...Kxe6
        • 2.Sg5#
      • 1...Kxc6!
    • 1.Qf6?
      • 1...Kc4
        • 2.Qd4#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Kxc6!
    • 1.Qb1?
      • 1...Kc4
        • 2.Qa2#
        • 2.Qb3#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Se7#
      • 1...Kxe6!
    • 1.Qc1?
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxe6!
  • Keys
    • 1.Qh8!
      • 1...Kc4
        • 2.Qd4#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Kxe6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(A)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(I)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XS(E)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(I)::S(E)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);S_FLIGHT,XS(E)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XS(E)::QAB(A)
        • K(b);S_FLIGHT,XP(H)::S(J)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • Refutation
        • K(b);S_FLIGHT,XP(I)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(b);OGATEB,S_FLIGHT,XP(H)::QAB(A)
      • K(b);OGATEB,S_FLIGHT,XP(I)::QAB(A)
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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).