MESON Chess Problem Database

Problem Display
PID: 109069 (3R4/1kp5/1p6/3P4/1N5p/4Q3/4K3/6B1 w - - 0 1)

Nemcek, Milan

Smena, 1964

3R4/1kp5/1p6/3P4/1N5p/4Q3/4K3/6B1

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qa7#
    • 1...c5
      • 2.Qe7#
    • 1...c6
      • 2.Qxb6#
      • 2.Qe7#
  • Tries
    • 1.Qc3?
      • 1...Ka7
        • 2.Qxc7#
      • 1...c5
        • 2.Qg7#
      • 1...c6
        • 2.Qg7#
      • 1...b5
        • 2.Qc6#
      • 1...h3!
    • 1.Qh3?
      • 1...c5
        • 2.Qd7#
      • 1...c6
        • 2.Qd7#
      • 1...b5
        • 2.Qc8#
      • 1...Ka7!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qa6#
      • 1...Ka7
        • 2.Qa6#
      • 1...c5
        • 2.Qh7#
      • 1...c6
        • 2.Qh7#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::QAR1(C)
    • P(d);OGATEB::QAR(C)
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::QAR2(C),XP(d)
        • P(d);OGATEB::QAR(C)
        • P(b);::QAB1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Vars
        • P(d);OGATEB::QAR2(C)
        • P(b);::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b)::QAR1(C)
      • P(d);OGATEB::QAR(C)
      • P(b);OGATEB::QAR2(C),XP(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).