MESON Chess Problem Database

Problem Display
PID: 227707 (8/8/8/8/3PkP2/4N3/4K3/4Q3 w - - 0 1)

Palatz, Franz Ferdinand Ludwig

L'Eclaireur du Soir, 1926

8/8/8/8/3PkP2/4N3/4K3/4Q3

#2

5 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qb4#
    • 1...Kxf4
      • 2.Qh4#
  • Tries
    • 1.Qb1+?
      • 1...Kxd4
        • 2.Qb4#
      • 1...Kxf4!
    • 1.Qc1?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kxf4!
    • 1.Qg1?
      • 1...Kxf4
        • 2.Qg4#
      • 1...Kxd4!
    • 1.Qh1+?
      • 1...Kxf4
        • 2.Qh4#
      • 1...Kxd4!
    • 1.d5?
      • threat
        • 2.Qb4#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kxf4!
    • 1.f5?
      • threat
        • 2.Qh4#
      • 1...Kf4
        • 2.Qh4#
      • 1...Kxd4!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.Qb4#
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
    • K(a);OGATEB,P-FLIGHT,XP(E)::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(E)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(E)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • P(D);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • P(E);
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT,XP(E)::QAB1(A)
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).