MESON Chess Problem Database

Problem Display
PID: 30860 (8/5p1p/5K1P/6n1/3pbk1p/5Nb1/3P2R1/2n1Q1N1 w - - 0 1)

Clark, DW

The Westminster Papers, 1874

8/5p1p/5K1P/6n1/3pbk1p/5Nb1/3P2R1/2n1Q1N1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qxh4#
    • 1...h3
      • 2.Qxg3#
  • Tries
    • 1.Qe3+?
      • 1...Kg4
        • 2.Qxg5#
      • 1...dxe3!
  • Keys
    • 1.Sh2!
      • 1...Bxe1
        • 2.Rg4#
      • 1...Bxh2
        • 2.Qxh4#
      • 1...Bxg2
        • 2.Qe5#
      • 1...Bf2
        • 2.Rg4#
      • 1...Bb1
        • 2.Qe5#
      • 1...Bc2
        • 2.Qe5#
      • 1...Bd3
        • 2.Qe5#
      • 1...Bf3
        • 2.Qe5#
      • 1...Bd5
        • 2.Qe5#
      • 1...Bf5
        • 2.Qe5#
      • 1...Bc6
        • 2.Qe5#
      • 1...Bg6
        • 2.Qe5#
      • 1...Bb7
        • 2.Qe5#
      • 1...Ba8
        • 2.Qe5#
      • 1...Sa2
        • 2.Se2#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sb3
        • 2.Se2#
      • 1...Sd3
        • 2.Se2#
      • 1...Sf3
        • 2.Sh3#
      • 1...Sh3
        • 2.Sxh3#
      • 1...Se6
        • 2.Sh3#
      • 1...d3
        • 2.Qe3#
      • 1...h3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 21
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE::QAR2(A),XP(f)
    • P(f);N_GUARD::QAB1(A),XB(b)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINB(b)::QAR1(A),XS(g)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • S(E);
    • Vars
      • B(b);OGATE,XQ(A)::R1(D)
      • B(b);OGATE,XS(E)::QAR2(A),XP(f)
      • B(d);OGATE,XR(D)::QAB1(A)
      • B(b);OGATE::R1(D)
      • B(d);OGATE::QAB1(A)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(g);N_GUARD::S(B)
      • S(g);N_GUARD::S(B),XS(g)
      • P(c);N_GUARD::QAB1(A)
      • P(f);N_GUARD::QAB1(A),XB(b)
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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).