MESON Chess Problem Database

Problem Display
PID: 227565 (5bN1/3ppP1Q/1K4R1/1npkP3/R3pP2/2P5/N5P1/8 w - - 0 1)

Boswell, Edward

11th Comm., El Ajedrez Argentino, 1926

5bN1/3ppP1Q/1K4R1/1npkP3/R3pP2/2P5/N5P1/8

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh6
      • 2.Sxe7#
    • 1...Bg7
      • 2.Sxe7#
    • 1...Sxc3
      • 2.Sxc3#
    • 1...Sd4
      • 2.c4#
    • 1...c4
      • 2.Sb4#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Qh1?
      • 1...Sxc3
        • 2.Sxc3#
      • 1...Sa3
        • 2.Qd1#
      • 1...Bh6
        • 2.Sxe7#
      • 1...Bg7
        • 2.Sxe7#
      • 1...Sd4
        • 2.c4#
      • 1...Sd6
        • 2.Qd1#
      • 1...Sa7
        • 2.Qd1#
      • 1...Sc7
        • 2.Qd1#
      • 1...e3
        • 2.g3#
        • 2.g4#
      • 1...c4
        • 2.Sb4#
      • 1...e6
        • 2.Sf6#
      • 1...d6!
    • 1.Qh3?
      • 1...Sxc3
        • 2.Sxc3#
        • 2.Qxd7#
      • 1...d6
        • 2.Qe6#
      • 1...Bh6
        • 2.Sxe7#
      • 1...Bg7
        • 2.Sxe7#
      • 1...Sa3
        • 2.Qxd7#
      • 1...Sd4
        • 2.Qxd7#
        • 2.c4#
      • 1...Sa7
        • 2.Qxd7#
      • 1...Sc7
        • 2.Qxd7#
      • 1...e3
        • 2.Qf3#
      • 1...c4
        • 2.Sb4#
      • 1...e6
        • 2.Sf6#
      • 1...Sd6!
  • Keys
    • 1.Qh5!
      • 1...Sxc3
        • 2.Sxc3#
      • 1...d6
        • 2.e6#
      • 1...Bh6
        • 2.Sxe7#
      • 1...Bg7
        • 2.Sxe7#
      • 1...Sa3
        • 2.Qd1#
      • 1...Sd4
        • 2.c4#
      • 1...Sd6
        • 2.Qd1#
      • 1...Sa7
        • 2.Qd1#
      • 1...Sc7
        • 2.Qd1#
      • 1...e3
        • 2.Qf3#
      • 1...c4
        • 2.Sb4#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::S(K),XP(f)
    • S(b);XP(C)::S(A),XS(b)
    • S(b);SBLOCK::P(C)
    • P(c);N_GUARD,SBLOCK::S(A)
    • P(f);N_GUARD,SBLOCK::S(K)
  • Tries
    • Try
      • Q(J);
      • Vars
        • S(b);XP(C)::S(A),XS(b)
        • S(b);N_GUARD::QAR(J)
        • B(g);N_GUARD::S(K),XP(f)
        • S(b);SBLOCK::P(C)
        • P(c);N_GUARD,SBLOCK::S(A)
        • P(f);N_GUARD,SBLOCK::S(K)
      • Refutation
        • P(e);
    • Try
      • Q(J);
      • Vars
        • P(e);N_GUARD::QAB1(J)
        • B(g);N_GUARD::S(K),XP(f)
        • S(b);N_GUARD::QAR2(J),XP(e)
        • P(a);OGATEB::QAB(J)
        • P(c);N_GUARD,SBLOCK::S(A)
        • P(f);N_GUARD::S(K)
      • Refutation
        • S(b);
  • Actual
    • Q(J);
    • Vars
      • S(b);XP(C)::S(A),XS(b)
      • P(e);SBLOCK::QAR(J)+P(F)
      • B(g);N_GUARD::S(K),XP(f)
      • S(b);N_GUARD::QAR(J)
      • S(b);SBLOCK::P(C)
      • P(a);OGATEB::QAB(J)
      • P(c);N_GUARD,SBLOCK::S(A)
      • P(f);N_GUARD,SBLOCK::S(K)
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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).