MESON Chess Problem Database

Problem Display
PID: 159099 (8/B7/5p1K/6NN/3q4/8/7k/1Q5B w - - 0 1)

Junker, Karl

Main-Post, 1976

8/B7/5p1K/6NN/3q4/8/7k/1Q5B

#2

6 + 3

15529 Karl Junker: Ausgewahlte Schachaufgaben 1978

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Qxg1#
    • 1...Qb2
      • 2.Qg1#
    • 1...Qc3
      • 2.Qg1#
    • 1...Qe5
      • 2.Qg1#
    • 1...Qd2
      • 2.Qg1#
    • 1...Qd3
      • 2.Qg1#
    • 1...Qa4
      • 2.Qg1#
    • 1...Qb4
      • 2.Qg1#
    • 1...Qc4
      • 2.Qg1#
    • 1...Qe4
      • 2.Qg1#
    • 1...Qf4
      • 2.Qg1#
    • 1...Qh4
      • 2.Qg1#
    • 1...Qd5
      • 2.Qg1#
    • 1...Qd6
      • 2.Qg1#
    • 1...Qd7
      • 2.Qg1#
    • 1...Qd8
      • 2.Qg1#
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qh1#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#
      • 1...Qd1!
    • 1.Be4?
      • threat
        • 2.Qh1#
      • 1...Qxe4
        • 2.Qg1#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#
      • 1...Qd1!
    • 1.Bc6?
      • threat
        • 2.Qh1#
      • 1...Qe4
        • 2.Qg1#
      • 1...Qd5
        • 2.Qg1#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#
      • 1...Qd1!
    • 1.Bb7?
      • threat
        • 2.Qh1#
      • 1...Qe4
        • 2.Qg1#
      • 1...Qd5
        • 2.Qg1#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#
      • 1...Qd1!
    • 1.Ba8?
      • threat
        • 2.Qh1#
      • 1...Qe4
        • 2.Qg1#
      • 1...Qd5
        • 2.Qg1#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#
      • 1...Qd1!
    • 1.Bb8+?
      • 1...Qf4
        • 2.Bxf4#
      • 1...Qd6
        • 2.Bxd6#
      • 1...Qe5!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qh1#
      • 1...Qxd5
        • 2.Qg1#
      • 1...Qe4
        • 2.Qg1#
      • 1...Qd1
        • 2.Qb8#
      • 1...Qa1
        • 2.Bg1#
        • 2.Qc2#
      • 1...Qg1
        • 2.Bxg1#
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • Q(b);N_GUARD::QAB1(A),XQ(b)
    • Q(b);N_GUARD::QAB1(A)
    • Q(b);N_GUARD,P_PINS(C)::QAB1(A)
    • Q(b);N_GUARD,SBLOCK::QAB1(A)
    • Q(b);N_GUARD,P_PINS(D)::QAB1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Refutation
        • Q(b);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(b);N_GUARD,XB(B)::QAB1(A)
      • Refutation
        • Q(b);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(b);N_GUARD::QAB1(A)
      • Refutation
        • Q(b);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(b);N_GUARD::QAB1(A)
      • Refutation
        • Q(b);
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(b);N_GUARD::QAB1(A)
      • Refutation
        • Q(b);
    • Try
      • B(F);CHECK
      • Vars
        • Q(b);N_GUARD,P_PINS(C),P_SPINQ(b)::B(F),XQ(b)
        • Q(b);N_GUARD,P_SPINQ(b)::B(F),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • B(B);
    • Threat
      • QAR1(A)
    • Vars
      • Q(b);N_GUARD,XB(B)::QAB1(A)
      • Q(b);N_GUARD::QAB1(A)
      • Q(b);N_GUARD::QAB(A)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).