MESON Chess Problem Database

Problem Display
PID: 152179 (b7/4q3/3p4/b3p1pn/3nN2B/1Q1P1k1P/2R1r1NK/3B4 w - - 0 1)

Gillespie, John A

Good Companions (May First Attempt Ty.), 1915

b7/4q3/3p4/b3p1pn/3nN2B/1Q1P1k1P/2R1r1NK/3B4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.Sxg5#
    • 1...Qe6
      • 2.Sxg5#
    • 1...Qa7
      • 2.Sxg5#
    • 1...Qb7
      • 2.Sxg5#
    • 1...Qc7
      • 2.Sxg5#
    • 1...Qd7
      • 2.Sxg5#
    • 1...Qf7
      • 2.Sxg5#
    • 1...Qh7
      • 2.Sxg5#
    • 1...Qe8
      • 2.Sxg5#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bb6
      • 2.Sd2#
    • 1...Bc7
      • 2.Sd2#
    • 1...Bd8
      • 2.Sd2#
    • 1...Sxb3
      • 2.Bxe2#
    • 1...Sb5
      • 2.Bxe2#
    • 1...Sf5
      • 2.Bxe2#
    • 1...Sc6
      • 2.Bxe2#
    • 1...Se6
      • 2.Bxe2#
    • 1...Sf6
      • 2.Sxg5#
  • Tries
    • 1.Qf7+?
      • 1...Qf6
        • 2.Sxg5#
      • 1...Qxf7
        • 2.Sxg5#
      • 1...Sf5
        • 2.Bxe2#
      • 1...Sf6
        • 2.Sxg5#
      • 1...Sf4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qg4#
      • 1...Qxe6
        • 2.Sxg5#
      • 1...Sxe6
        • 2.Bxe2#
      • 1...Qd7
        • 2.Sxg5#
      • 1...Sf5
        • 2.Bxe2#
      • 1...Sf6
        • 2.Sxg5#
      • 1...g4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • Q(i);N_GUARD::S(H),XP(f)
    • B(d);N_GUARD::S(H),XB(d)
    • B(d);N_GUARD::S(H)
    • S(c);N_GUARD,XQ(E)::B(A),XR(a)
    • S(c);N_GUARD::B(A),XR(a)
    • S(g);S_CUTQ(i)::S(H),XP(f)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • Q(i);P_SPINQ(i)::S(H),XP(f)
        • Q(i);XQ(E)::S(H),XP(f)
        • S(c);P_SPINS(c)::B(A),XR(a)
        • S(g);P_SPINS(g)::S(H),XP(f)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • Q(i);N_GUARD,XQ(E)::S(H),XP(f)
      • S(c);N_GUARD,XQ(E)::B(A),XR(a)
      • Q(i);N_GUARD::S(H),XP(f)
      • S(c);N_GUARD::B(A),XR(a)
      • S(g);S_CUTQ(i)::S(H),XP(f)
      • P(f);::QAB1(E),XP(f)
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).