MESON Chess Problem Database

Problem Display
PID: 24136 (8/N7/1b6/8/k7/1pQK4/8/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/N7/1b6/8/k7/1pQK4/8/8

#2

3 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kc4?
      • threat
        • 2.Qa1#
        • 2.Qb4#
      • 1...Ka3
        • 2.Qa1#
        • 2.Qxb3#
      • 1...Bd4
        • 2.Qb4#
      • 1...Ba5
        • 2.Qa1#
        • 2.Qxb3#
      • 1...b2
        • 2.Qb4#
      • 1...Bc5!
    • 1.Qxb3+?
      • 1...Ka5
        • 2.Qa3#
        • 2.Qb5#
      • 1...Kxb3!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Sc6#
        • 2.Qb5#
      • 1...Ka3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qb4#
      • 1...Ka3
        • 2.Qa1#
      • 1...Kb5
        • 2.Qc4#
      • 1...Ba5
        • 2.Qxa5#
      • 1...Bc5
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAR1(A)
        • P(a);::QAR1(A)
      • Refutation
        • B(c);
    • Try
      • Q(A);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(A)
      • K(b);S_FLIGHT::QAB1(A)
      • B(c);N_GUARD::QAR1(A),XB(c)
      • B(c);N_GUARD::QAR1(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).