MESON Chess Problem Database

Problem Display
PID: 51058 (4Q3/6p1/p2N2Pn/1pp1p3/Pn1k4/2N1p3/1PP1BPp1/5bK1 w - - 0 1)

Crake, James

Burnley Express, 1880

4Q3/6p1/p2N2Pn/1pp1p3/Pn1k4/2N1p3/1PP1BPp1/5bK1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Sf5#
    • 1...Sf5
      • 2.Sxf5#
    • 1...Sf7
      • 2.Sf5#
    • 1...Sg8
      • 2.Sf5#
    • 1...e4
      • 2.Qxe4#
    • 1...a5
      • 2.Sdxb5#
  • Tries
    • 1.Scxb5+?
      • 1...Kd5
        • 2.c4#
      • 1...axb5!
  • Keys
    • 1.Qf7!
      • 1...exf2+
        • 2.Qxf2#
      • 1...Bxe2
        • 2.Sxe2#
      • 1...Sxc2
        • 2.Qd5#
      • 1...Sxf7
        • 2.Sf5#
      • 1...bxa4
        • 2.Qc4#
      • 1...c4
        • 2.Qa7#
      • 1...e4
        • 2.Qxg7#
      • 1...Sa2
        • 2.Qd5#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Sg4
        • 2.Sf5#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Sg8
        • 2.Sf5#
      • 1...a5
        • 2.Scxb5#
        • 2.Sdxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(j);N_GUARD::S(H)
    • S(j);N_GUARD::S(H),XS(j)
    • P(h);OGATE::QAR1(J),XP(h)
    • P(i);N_GUARD::S(H),XP(f)
  • Tries
    • Try
      • S(F);CHECK,XP(f)
      • Vars
        • K(e);P-FLIGHT::P(C)
      • Refutation
        • P(i);XS(F)
  • Actual
    • Q(J);
    • Vars
      • P(c);CHECK,OGATE,XP(E)::QAB(J),XP(c)
      • B(a);XB(D)::S(F),XB(a)
      • S(d);N_GUARD,XP(C)::QAR1(J)
      • S(j);N_GUARD,XQ(J)::S(H)
      • P(f);N_GUARD,XP(G)::QAR1(J)
      • P(g);OGATEB::QAB(J)
      • P(h);OGATEB::QAB(J),XP(k)
      • S(d);N_GUARD::QAR1(J)
      • S(d);N_GUARD::QAR1(J),XS(d)
      • S(j);N_GUARD::S(H)
      • S(j);N_GUARD::S(H),XS(j)
HTML5 logo

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).