Problem Display
PID: 107609 (8/8/8/1B1p2p1/5prp/2BK2pN/4P1pb/5kN1 w - - 0 1)

Authier, Gabriel

Bulletin de l'UPF, 1948

8/8/8/1B1p2p1/5prp/2BK2pN/4P1pb/5kN1

#2

6 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Kc2?
      • threat
        • 2.e3#
        • 2.e4#
      • 1...f3
        • 2.e4#
      • 1...d4!
    • 1.Kd2?
      • threat
        • 2.e3#
        • 2.e4#
      • 1...f3
        • 2.e4#
      • 1...d4!
    • 1.e4?
      • threat
        • 2.Kc2#
        • 2.Kd2#
        • 2.Kd4#
      • 1...Bxg1
        • 2.Kc2#
        • 2.Kd2#
      • 1...d4
        • 2.Kxd4#
      • 1...fxe4 ep!
  • Keys
    • 1.Kd4!
      • threat
        • 2.e3#
        • 2.e4#
      • 1...Bxg1+
        • 2.e3#
      • 1...f3+
        • 2.e4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::B(F)+P(B)
      • Refutation
        • P(h);
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::B(F)+P(B)
      • Refutation
        • P(h);
    • Try
      • P(B);
      • Threat
        • DUALS(3)
      • Vars
        • P(h);::B(F)+K(D),XP(h)
      • Refutation
        • P(e);EP,XP(B)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • B(c);CHECK,XS(A)::B(F)+P(B)
      • P(e);CHECK::B(F)+P(B)


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).