MESON Chess Problem Database

Problem Display
PID: 135351 (8/8/p6B/Kp6/2p5/3P4/1Pk1B3/Q7 w - - 0 1)

Laib, Kurt Friedrich

Die Schwalbe, 1934

8/8/p6B/Kp6/2p5/3P4/1Pk1B3/Q7

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Bd1#
    • 1...cxd3
      • 2.Bd1#
  • Tries
    • 1.Qb1+?
      • 1...Kb3
        • 2.Bd1#
      • 1...Kxb1!
    • 1.b3?
      • 1...Kxb3
        • 2.Bd1#
      • 1...cxb3
        • 2.Qc1#
      • 1...cxd3
        • 2.Bd1#
      • 1...c3
        • 2.Qa2#
      • 1...b4!
  • Keys
    • 1.b4!
      • 1...Kb3
        • 2.Bd1#
      • 1...cxd3
        • 2.Bd1#
      • 1...cxb4 ep
        • 2.Qc1#
      • 1...c3
        • 2.Qa2#

This is a version

Version by Yves Cheylan.

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(C)
    • P(b);SBLOCK,XP(D)::B(C)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(B);
      • Vars
        • K(a);S_FLIGHT,XP(B)::B(C)
        • P(b);SBLOCK,XP(B)::QAR1(A)
        • P(b);SBLOCK,XP(D)::B(C)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • P(c);
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • P(b);SBLOCK,XP(D)::B(C)
      • P(b);EP,XP(B)::QAR1(A)
      • P(b);SBLOCK::QAR2(A)
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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).