MESON Chess Problem Database

Problem Display
PID: 221812 (b4b2/3p4/4B2p/4p2K/4kB2/3pPp2/8/1Q6 w - - 0 1)

Tucker, Frederick G

British Chess Magazine, 1928

b4b2/3p4/4B2p/4p2K/4kB2/3pPp2/8/1Q6

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bg7
      • 2.Qb4#
    • 1...f2
      • 2.Qh1#
    • 1...d6
      • 2.Qb4#
  • Tries
    • 1.Qb7+?
      • 1...d5
        • 2.Qh7#
      • 1...Bxb7!
    • 1.Qb8?
      • threat
        • 2.Qxe5#
      • 1...exf4
        • 2.Qxf4#
      • 1...d2
        • 2.Qb1#
      • 1...Bd6
        • 2.Qxa8#
      • 1...Bg7
        • 2.Qb4#
      • 1...d6
        • 2.Qb4#
      • 1...f2!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxe5#
      • 1...exf4
        • 2.Qd4#
      • 1...d2
        • 2.Qb1#
      • 1...f2
        • 2.Qh1#
      • 1...Bd6
        • 2.Qxa8#
      • 1...Bg7
        • 2.Qa4#
      • 1...d6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(h);N_GUARD::QAR(A),XB(h)
    • B(h);N_GUARD::QAR(A)
    • P(b);OGATEB::QAB(A)
    • P(f);S_CUTB(h)::QAR(A)
  • Tries
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • P(f);OGATE,P_SPINP(f)::QAB(A)
      • Refutation
        • B(g);XQ(A)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A),XP(d)
      • Vars
        • P(d);OGATE,XB(C)::QAR1(A),XP(d)
        • P(a);OGATEB::QAB(A)
        • B(h);S_CUTP(f)::QAB(A),XB(g)
        • B(h);N_GUARD::QAR(A)
        • P(f);S_CUTB(h)::QAR(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAR1(A),XP(d)
    • Vars
      • P(d);N_GUARD,XB(C)::QAR1(A)
      • P(a);OGATEB::QAB(A)
      • P(b);OGATEB::QAB(A)
      • B(h);S_CUTP(f)::QAB(A),XB(g)
      • B(h);N_GUARD::QAR(A)
      • P(f);S_CUTB(h)::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).