MESON Chess Problem Database

Problem Display
PID: 142563 (8/2N5/p1Nbp2B/8/8/2k3pQ/B3P1P1/nKn5 w - - 0 1)

Clark, Mrs WA

British Chess Magazine, 1891

8/2N5/p1Nbp2B/8/8/2k3pQ/B3P1P1/nKn5

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Sb5#
    • 1...e5
      • 2.Sd5#
  • Tries
    • 1.Qxg3+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Bxg3!
  • Keys
    • 1.Qf5!
      • 1...Bxc7
        • 2.Qc5#
      • 1...Sxa2
        • 2.Qd3#
      • 1...Sxe2
        • 2.Qf3#
      • 1...exf5
        • 2.Sd5#
      • 1...Bf4
        • 2.Qa5#
      • 1...Sab3
        • 2.Qc2#
      • 1...Scb3
        • 2.Qd3#
      • 1...Ba3
        • 2.Qe5#
      • 1...Bb4
        • 2.Qe5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Be7
        • 2.Qe5#
      • 1...Bf8
        • 2.Qe5#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qxd3#
      • 1...a5
        • 2.Sb5#
      • 1...e5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::S(H)
    • P(g);N_GUARD::S(H)
  • Tries
    • Try
      • Q(E);CHECK,XP(d)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(E),XS(b)
      • Refutation
        • B(f);XQ(E)
  • Actual
    • Q(E);N_PINP(d)
    • Vars
      • B(f);N_GUARD,XS(H)::QAR2(E)
      • S(b);N_GUARD,XB(B)::QAR1(E)
      • S(b);N_GUARD,XP(C)::QAR(E)
      • P(g);N_GUARD,XQ(E)::S(H)
      • B(f);N_GUARD::QAB(E)
      • S(a);N_GUARD::QAR1(E)
      • S(b);N_GUARD::QAR1(E)
      • B(f);N_GUARD::QAR2(E),XB(f)
      • B(f);N_GUARD::QAB(E),XB(f)
      • S(a);N_GUARD::QAR1(E),XS(a)
      • S(b);N_GUARD::QAR1(E),XS(b)
      • P(e);N_GUARD::S(H)
      • P(g);N_GUARD::S(H)
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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).