MESON Chess Problem Database

Problem Display
PID: 16177 (2k5/K2p4/1B6/3n4/7b/7Q/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2000

2k5/K2p4/1B6/3n4/7b/7Q/8/8

#2

3 + 4

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qh8#
    • 1...Bf2
      • 2.Qh8#
    • 1...Bg3
      • 2.Qh8#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Sf4
      • 2.Qc3#
    • 1...Sf6
      • 2.Qc3#
  • Tries
    • 1.Qc3+?
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sxc3!
    • 1.Qg3?
      • threat
        • 2.Qb8#
      • 1...Sc7
        • 2.Qxc7#
      • 1...d6
        • 2.Qh3#
        • 2.Qg4#
      • 1...Sf4
        • 2.Qc3#
      • 1...Bxg3!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qb8#
      • 1...Sc7
        • 2.Qxc7#
      • 1...d6
        • 2.Qh3#
      • 1...Bg3
        • 2.Qh8#
      • 1...Sf4
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::QAR(A)
    • B(a);OGATE,P_PINB(B)::QAR(A)
    • S(b);N_GUARD::QAR(A),XS(b)
    • S(b);N_GUARD::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK,N_PINP(c)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAR1(A)
      • Vars
        • S(b);N_GUARD::QAR1(A),XS(b)
        • S(b);N_GUARD::QAR(A)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • QAR1(A)
    • Vars
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(c);OGATEB::QAB(A)
      • B(a);OGATE::QAR(A)
      • S(b);N_GUARD::QAR(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).