MESON Chess Problem Database

Problem Display
PID: 230394 (8/2K5/k7/P2Q4/8/8/8/8 w - - 0 1)

Latzel, Gerhard Paul

Deutsche Schachzeitung, 1968

8/2K5/k7/P2Q4/8/8/8/8

#2

3 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka7
      • 2.Qb7#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qb6#
      • 1...Ka7
        • 2.Qb7#
      • 1...Kxa5!
    • 1.Qc6+?
      • 1...Ka7
        • 2.Qb7#
      • 1...Kxa5!
    • 1.Qb5+?
      • 1...Ka7
        • 2.Qb7#
      • 1...Kxb5!
  • Keys
    • 1.Kc8!
      • 1...Ka7
        • 2.Qb7#

This anticipates 217868(1968)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(A)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR1(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).