MESON Chess Problem Database

Problem Display
PID: 213222 (8/8/1p6/1p6/4Q3/k7/2K5/8 w - - 0 1)

Speckmann, Werner

Land og Folk, 1967

8/8/1p6/1p6/4Q3/k7/2K5/8

#2

2 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Qa8#
    • 1...b4
      • 2.Qa8#
  • Tries
    • 1.Qb4+?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kxb4!
    • 1.Qe7+?
      • 1...Ka2
        • 2.Qa7#
      • 1...b4
        • 2.Qa7#
      • 1...Ka4!
  • Keys
    • 1.Qd4!
      • 1...Ka2
        • 2.Qb2#
      • 1...b4
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(B)
    • P(b);SBLOCK::QAR(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(B)
        • P(b);P_SPINP(b),SBLOCK::QAR(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • P(b);SBLOCK::QAR2(B)
HTML5 logo

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).