Problem Display
PID: 193540 (7b/n1N5/K2p2p1/2kP1nr1/5P1q/PP3R2/1p5P/7Q w - - 0 1)

Paluzie y Lucena, Jozefo

La Strategie, 1915

7b/n1N5/K2p2p1/2kP1nr1/5P1q/PP3R2/1p5P/7Q

#2

9 + 9


6490 yacpdb 2019

SOLUTION


  • SOUND
  • Sets
    • 1...Sd4
      • 2.Rc3#
  • Tries
    • 1.Rc3+?
      • 1...Bxc3
        • 2.Se6#
      • 1...Kd4!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Se6#
      • 1...Sd4
        • 2.Rc3#
      • 1...Sg7
        • 2.Qg1#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK,S_CUTB(i)::R(E)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(i);XR(E)::S(I)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • S(I)
    • Vars
      • K(c);S_FLIGHT::S(I)
      • S(d);SBLOCK,S_CUTB(i)::R(E)
      • S(d);N_GUARD,S_CUTB(i)::QAB(A)


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).