MESON Chess Problem Database

Problem Display
PID: 6724 (8/8/3qp2k/3p4/6R1/8/Q7/3K4 w - - 0 1)

Lebedev, Aleksandr N

Lebedev, Viacheslav Aleksandr

Die Schwalbe, 1933

8/8/3qp2k/3p4/6R1/8/Q7/3K4

#2

3 + 4

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qxh2#
    • 1...Qb4
      • 2.Qh2#
    • 1...Qc5
      • 2.Qh2#
    • 1...Qf8
      • 2.Qh2#
    • 1...Qa6
      • 2.Qh2#
    • 1...Qb6
      • 2.Qh2#
    • 1...Qc6
      • 2.Qh2#
    • 1...Qd7
      • 2.Qh2#
    • 1...e5
      • 2.Qh2#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qg6#
      • 1...Kh5
        • 2.Qg6#
      • 1...e5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qg6#
      • 1...Kh5
        • 2.Qg6#
      • 1...e5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::QAR(B),XQ(b)
    • Q(b);N_GUARD::QAR(B)
    • Q(b);N_GUARD,SBLOCK::QAR(B)
    • P(c);S_CUTQ(b)::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(d);P-FLIGHT::QAB1(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);P-FLIGHT::QAB1(B)
      • P(c);S_CUTQ(b)::QAR(B)
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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).