MESON Chess Problem Database

Problem Display
PID: 39773 (8/8/6Kb/8/6p1/6Nk/5Q1p/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

8/8/6Kb/8/6p1/6Nk/5Q1p/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Qxh2#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qg3#
        • 2.Qxh2#
      • 1...g3
        • 2.Qxg3#
      • 1...h1Q
        • 2.Qg3#
      • 1...h1S
        • 2.Qh2#
      • 1...h1B
        • 2.Qg3#
        • 2.Qh2#
      • 1...h1R
        • 2.Qg3#
      • 1...Bf4!
    • 1.Sh1?
      • threat
        • 2.Qg3#
      • 1...g3
        • 2.Qxg3#
      • 1...Bf4!
    • 1.Sf5?
      • threat
        • 2.Qg3#
        • 2.Qf1#
      • 1...g3
        • 2.Qxg3#
      • 1...h1Q
        • 2.Qg3#
      • 1...h1B
        • 2.Qg3#
      • 1...h1R
        • 2.Qg3#
      • 1...Bf4
        • 2.Qf1#
      • 1...h1S!
    • 1.Sh5?
      • threat
        • 2.Qg3#
      • 1...g3
        • 2.Qxg3#
      • 1...Bf4
        • 2.Sxf4#
      • 1...h1S!
    • 1.Qf1+?
      • 1...Kh4
        • 2.Sf5#
      • 1...Kxg3!
    • 1.Qg2+?
      • 1...Kh4
        • 2.Sf5#
        • 2.Qxh2#
      • 1...Kxg2!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qg3#
      • 1...g3
        • 2.Qxg3#
      • 1...h1S
        • 2.Sg1#
      • 1...Bf4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(A),XP(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • P(a);::QAR1(A)
      • Refutation
        • B(d);
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • B(d);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • P(a);::QAR1(A)
        • B(d);::QAB(A)
      • Refutation
        • P(a);
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Vars
        • P(c);::QAR1(A),XP(c)
        • B(d);N_GUARD::S(B),XB(d)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(B)
      • Refutation
        • K(b);P-FLIGHT,XS(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAR1(A)
    • Vars
      • P(c);::QAR1(A),XP(c)
      • P(a);N_GUARD::S(B)
      • B(d);N_GUARD::S(B),XB(d)
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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).