Problem Display
PID: 208774 (8/1Rppr3/2k2B2/2Nqp3/2P1B3/2R2N2/1KP3Q1/8 w - - 0 1)

Cook, Eugene Beauharnais

Dubuque Chess Journal, 1876

8/1Rppr3/2k2B2/2Nqp3/2P1B3/2R2N2/1KP3Q1/8

#2

10 + 6


6490 yacpdb 2020

SOLUTION


  • SOUND
  • Sets
    • 1...d6
      • 2.cxd5#
  • Tries
    • 1.Bxd5+?
      • 1...Kd6
        • 2.Se4#
      • 1...Kxc5!
    • 1.Qd2?
      • threat
        • 2.Qxd5#
      • 1...Kxc5
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...Qxe4!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Sxe5#
        • 2.Bxd5#
        • 2.cxd5#
      • 1...Qxe4
        • 2.Sxe5#
      • 1...d6
        • 2.cxd5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::P(F),XQ(a)
  • Tries
    • Try
      • B(G);CHECK,XQ(a)
      • Vars
        • K(c);P-FLIGHT::S(H)
      • Refutation
        • K(c);P-FLIGHT,XS(H)
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XQ(a)
      • Vars
        • K(c);N_SPINQ(a),P-FLIGHT,XS(H)::QAR1(C),XQ(a)
        • K(c);P-FLIGHT::QAR1(C),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(G)
  • Actual
    • B(I);XR(f)
    • Threat
      • DUALS(3)
    • Vars
      • Q(a);N_SPINQ(a),XB(G)::S(E),XP(b)
      • P(e);::P(F),XQ(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).