MESON Chess Problem Database

Problem Display
PID: 46447 (5N2/8/8/8/1K1pk3/8/3QN2B/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

5N2/8/8/8/1K1pk3/8/3QN2B/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf4#
  • Tries
    • 1.Kc4?
      • threat
        • 2.Qf4#
        • 2.Qd3#
      • 1...Kf5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
        • 2.Qxd3#
      • 1...Kf3!
    • 1.Kc5?
      • 1...Kf5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...Kf3!
    • 1.Sg1?
      • 1...Kd5
        • 2.Qg2#
      • 1...Kf5
        • 2.Qf4#
      • 1...d3!
    • 1.Sc3+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qf4#
      • 1...dxc3!
    • 1.Qf4+?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qd3+?
      • 1...Kd5
        • 2.Qf3#
      • 1...Kxd3!
    • 1.Qxd4+?
      • 1...Kf5
        • 2.Qf4#
      • 1...Kf3!
  • Keys
    • 1.Sc1!
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qg2#
      • 1...Kf5
        • 2.Qf4#
      • 1...d3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • S(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);XS(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::QAR1(A)
      • P(a);::QAB1(A),XP(a)
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).