Problem Display
PID: 208816 (8/1NkN4/2r5/2p5/2Q5/2R2B2/1PKRPB2/8 w - - 0 1)

Cook, Eugene Beauharnais

Dubuque Chess Journal, 1876

8/1NkN4/2r5/2p5/2Q5/2R2B2/1PKRPB2/8

#2

10 + 3


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Tries
    • 1.Qg8?
      • threat
        • 2.Qb8#
      • 1...Rd6
        • 2.Qd8#
      • 1...Kxb7!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qxc6#
      • 1...Kxb7
        • 2.Qxc6#
      • 1...Kc8
        • 2.Qxc6#
      • 1...Rxc5
        • 2.Rxc5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • R(b);P_SPINP(a)::QAB1(H)
      • Refutation
        • K(c);P-FLIGHT,P_SPINR(b),XS(I)
  • Actual
    • Q(H);P_PINR(b),XP(a)
    • Threat
      • QAR1(H),XR(b)
    • Vars
      • K(c);P-FLIGHT,XS(I)::QAB1(H),XR(b)
      • K(c);P-FLIGHT::QAR2(H),XR(b)
      • R(b);OGATE,P_PINR(F),XQ(H)::R(F),XR(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).