MESON Chess Problem Database

Problem Display
PID: 206697 (8/2Q5/4K3/8/3k4/7N/8/2N5 w - - 0 1)

de Savignac Castelet, G Arnaud

La Strategie, 1925

8/2Q5/4K3/8/3k4/7N/8/2N5

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf4#
    • 1...Ke4
      • 2.Qf4#
  • Tries
    • 1.Kf5?
      • 1...Ke3
        • 2.Qf4#
        • 2.Qc3#
      • 1...Kd5!
    • 1.Sg1?
      • 1...Ke4
        • 2.Qe5#
      • 1...Ke3!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kxc3!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Qd3#
        • 2.Qf4#
      • 1...Kxc4!
  • Keys
    • 1.Qc2!
      • 1...Ke3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(D)
    • K(a);P-FLIGHT::QAR1(D)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
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).