MESON Chess Problem Database

Problem Display
PID: 10573 (8/8/8/8/8/N1B5/kp2K3/3B2Q1 w - - 0 1)

Svedberg, Erik Daniel

Tidskrift for Schack, 1965

8/8/8/8/8/N1B5/kp2K3/3B2Q1

#2

5 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
133 The Problemist Supplement 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.Bb3#
    • 1...Kxa3
      • 2.Qa7#
  • Tries
    • 1.Sb1?
      • 1...Kxb1
        • 2.Bb3#
      • 1...Ka1!
    • 1.Sc4?
      • 1...Ka1
        • 2.Bb3#
      • 1...Kb1
        • 2.Bb3#
      • 1...b1Q
        • 2.Qa7#
      • 1...b1B
        • 2.Qa7#
      • 1...b1R
        • 2.Qa7#
      • 1...b1S!
    • 1.Qg8+?
      • 1...Kxa3
        • 2.Qb3#
        • 2.Qa8#
      • 1...Ka1!
  • Keys
    • 1.Sb5!
      • 1...Ka1
        • 2.Bb3#
      • 1...Kb1
        • 2.Bb3#
      • 1...b1Q
        • 2.Qa7#
      • 1...b1S
        • 2.Qg8#
      • 1...b1B
        • 2.Qa7#
        • 2.Qg8#
      • 1...b1R
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR(B)+B(A)
    • K(a);OGATEB,P-FLIGHT,XS(D)::QAR(B)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAR(B)+B(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR(B)+B(A)
        • K(a);S_FLIGHT::QAR(B)+B(A)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
  • Actual
    • S(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::QAR(B)+B(A)
      • K(a);S_FLIGHT::QAR(B)+B(A)
      • P(b);SBLOCK::QAR(B)
      • P(b);SBLOCK::QAB(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).