MESON Chess Problem Database

Problem Display
PID: 155699 (8/2pp4/2Pp4/3k1P2/1KN5/5P2/P7/7Q w - - 0 1)

Jorgensen, Leon

Arbejder-Skak, 1934

8/2pp4/2Pp4/3k1P2/1KN5/5P2/P7/7Q

#2

7 + 4

15422 Problemskak 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd1#
    • 1...dxc6
      • 2.Qd1#
  • Tries
    • 1.Qg2?
      • 1...Kd4
        • 2.Qd2#
      • 1...dxc6
        • 2.Qd2#
      • 1...Kxc6!
    • 1.Qa1?
      • 1...dxc6
        • 2.Se3#
        • 2.Qd1#
      • 1...Kxc6!
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
        • 2.Qd1#
      • 1...Kxc6!
    • 1.Qc1?
      • 1...Kd4
        • 2.Qd2#
        • 2.Qd1#
      • 1...dxc6
        • 2.Qd2#
        • 2.Qd1#
      • 1...Kxc6!
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qd2#
        • 2.Qd1#
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qf1?
      • 1...Kd4
        • 2.Qd1#
      • 1...dxc6
        • 2.Qd3#
        • 2.Qd1#
      • 1...Kxc6!
    • 1.Qg1?
      • 1...dxc6
        • 2.Qd1#
      • 1...Kxc6!
    • 1.Qh2?
      • 1...Kd4
        • 2.Qd2#
      • 1...dxc6
        • 2.Qd2#
      • 1...Kxc6!
    • 1.Qh6?
      • 1...Kd4
        • 2.Qd2#
      • 1...dxc6
        • 2.Qd2#
      • 1...Kxc6!
    • 1.a3?
      • 1...Kd4
        • 2.Qd1#
      • 1...dxc6
        • 2.Qd1#
      • 1...Kxc6!
    • 1.a4?
      • 1...Kd4
        • 2.Qd1#
      • 1...dxc6
        • 2.Qd1#
      • 1...Kxc6!
  • Keys
    • 1.Qh8!
      • 1...Kxc6
        • 2.Qa8#
      • 1...dxc6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR(A)
    • P(d);SBLOCK,XP(G)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT,XP(G)
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(d);SBLOCK,XP(G)::QAR(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(G)::QAB(A)
      • P(d);SBLOCK,XP(G)::S(E)
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).