Problem Display
PID: 149372 (2k5/8/2P5/2K5/8/8/7Q/8 w - - 0 1)

Dehler, Ernst Georg

Hausschatz, 1923

2k5/8/2P5/2K5/8/8/7Q/8

#2

3 + 1


5454 Near Snap 2014
15148 Sadier Collection 2014

SOLUTION


  • SOUND
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kb8!
  • Keys
    • 1.Qh7!
      • 1...Kb8
        • 2.Qb7#
      • 1...Kd8
        • 2.Qd7#

Anticipated by 182239(1906)

This anticipates 46746(1967), 85855(1968), 158191(1968), 249383(1971), 219432(1977), 245161(1997)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)


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).