MESON Chess Problem Database

Problem Display
PID: 51247 (8/KbQ1N2B/pp4r1/6N1/1P1k4/1P1p1P2/3P4/b2nr3 w - - 0 1)

Luke, R

Manchester Guardian, 1955

8/KbQ1N2B/pp4r1/6N1/1P1k4/1P1p1P2/3P4/b2nr3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qc4#
    • 1...Bd5
      • 2.Sf5#
    • 1...Sb2
      • 2.Qc3#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Qc4#
      • 1...Bd5
        • 2.Sf5#
      • 1...Bc6
        • 2.Qxb6#
      • 1...Sb2
        • 2.Qc3#
      • 1...Se3
        • 2.Qe5#
      • 1...b5
        • 2.Qc5#
      • 1...Rc6!
    • 1.Qd6+?
      • 1...Bd5
        • 2.Sf5#
        • 2.Sc6#
        • 2.Qxd5#
      • 1...Rxd6!
  • Keys
    • 1.f4!
      • threat
        • 2.Qc4#
      • 1...Rc6
        • 2.Sf3#
      • 1...Bd5
        • 2.Sf5#
      • 1...Bc6
        • 2.Qxb6#
      • 1...Sb2
        • 2.Qc3#
      • 1...Se3
        • 2.Qe5#
      • 1...b5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);SBLOCK::QAR1(G)
    • B(i);SBLOCK::S(H)
    • S(b);N_GUARD,S_CUTB(a)::QAB1(G)
    • P(g);N_GUARD::QAB1(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • B(i);SBLOCK::S(H)
        • B(i);S_CUTR(h)::QAB(G),XP(g)
        • S(b);N_GUARD,S_CUTB(a)::QAB1(G)
        • S(b);S_CUTR(c)::QAB1(G)
        • P(g);N_GUARD::QAB1(G)
      • Refutation
        • R(h);
    • Try
      • Q(G);CHECK
      • Refutation
        • R(h);XQ(G)
  • Actual
    • P(C);
    • Threat
      • QAR1(G)
    • Vars
      • R(h);S_CUTB(i)::S(E)
      • B(i);SBLOCK::S(H)
      • B(i);S_CUTR(h)::QAB(G),XP(g)
      • S(b);N_GUARD,S_CUTB(a)::QAB1(G)
      • S(b);S_CUTR(c)::QAB1(G)
      • P(g);N_GUARD::QAB1(G)
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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).