MESON Chess Problem Database

Problem Display
PID: 11198 (2n3N1/1pK5/2p1kNBb/2R3n1/8/4p1p1/p3b1Q1/8 w - - 0 1)

Jenkins, AF

Chess, 1937

2n3N1/1pK5/2p1kNBb/2R3n1/8/4p1p1/p3b1Q1/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bg4
      • 2.Qxa2#
    • 1...Bh5
      • 2.Qxa2#
    • 1...Sf3
      • 2.Qh3#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf7
      • 2.Bf5#
    • 1...Sh7
      • 2.Qe4#
  • Tries
    • 1.Qh3+?
      • 1...Bg4
        • 2.Qxg4#
      • 1...Sxh3!
    • 1.Qxc6+?
      • 1...Sd6
        • 2.Qd5#
        • 2.Qd7#
        • 2.Qxd6#
      • 1...bxc6!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Sf4#
      • 1...Bxh5
        • 2.Qxa2#
      • 1...Sf3
        • 2.Qh3#
      • 1...Sh3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf7
        • 2.Bf5#
      • 1...Sh7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(b);OGATE::QAB(A),XP(a)
    • S(e);N_GUARD,S_CUTB(b)::QAB(A)
    • S(e);N_GUARD::QAR2(A)
    • S(e);N_GUARD::QAR2(A),XS(e)
    • S(e);SBLOCK::B(D)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAB(A),XB(b)
      • Refutation
        • S(e);XQ(A)
    • Try
      • Q(A);CHECK,XP(f)
      • Refutation
        • P(i);XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(b);OGATE,XS(C)::QAB(A),XP(a)
      • S(e);N_GUARD,S_CUTB(b)::QAB(A)
      • S(e);N_GUARD::QAR2(A)
      • S(e);N_GUARD::QAR2(A),XS(e)
      • S(e);SBLOCK::B(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).