MESON Chess Problem Database

Problem Display
PID: 203548 (K7/8/1p6/3Q4/k7/P7/P7/8 w - - 0 1)

Palatz, Franz Ferdinand Ludwig

Ruhr-Echo, 1924

K7/8/1p6/3Q4/k7/P7/P7/8

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa3
      • 2.Qb3#
  • Tries
    • 1.Ka7?
      • 1...Kxa3
        • 2.Qb3#
      • 1...b5!
    • 1.Kb7?
      • 1...Kxa3
        • 2.Qb3#
      • 1...b5!
    • 1.Qc4+?
      • 1...Kxa3
        • 2.Qb3#
      • 1...Ka5!
    • 1.Qb5+?
      • 1...Kxa3
        • 2.Qb3#
      • 1...Kxb5!
  • Keys
    • 1.Kb8!
      • 1...Kxa3
        • 2.Qb3#
      • 1...b5
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XP(B)::QAR1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(a);P-FLIGHT,XP(B)::QAR1(C)
      • P(b);SBLOCK::QAR(C)
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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).