Problem Display
PID: 2213 (8/1p6/1R2Q3/k7/8/K7/8/8 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

8/1p6/1R2Q3/k7/8/K7/8/8

#2

3 + 2


1679 American Chess Nuts 1868

SOLUTION


  • SOUND
  • Tries
    • 1.Rb1?
      • threat
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
    • 1.Rb2?
      • threat
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
    • 1.Rb3?
      • threat
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
    • 1.Rb4?
      • threat
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
    • 1.Rd6?
      • 1...Kb5
        • 2.Qd5#
      • 1...b5
        • 2.Ra6#
      • 1...b6!
  • Keys
    • 1.Kb2!
      • 1...Ka4
        • 2.Qa2#

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR2(C)


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).