Problem Display
PID: 182234 (8/8/1Q6/1K6/1p6/1k6/8/1B6 w - - 0 1)

Spencer, George Burt

St. Paul's Dispatch, 1906

8/8/1Q6/1K6/1p6/1k6/8/1B6

#2

3 + 2


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qxb4#
      • 1...Ka3
        • 2.Qxb4#
      • 1...Kc3
        • 2.Qxb4#
      • 1...Ka4
        • 2.Qxb4#
      • 1...Kb2!
    • 1.Qf2?
      • 1...Ka3
        • 2.Qa2#
      • 1...Kc3!
    • 1.Qa5?
      • threat
        • 2.Qxb4#
      • 1...Kc3
        • 2.Qxb4#
      • 1...Kb2!
    • 1.Qc5?
      • threat
        • 2.Qxb4#
      • 1...Ka3
        • 2.Qxb4#
      • 1...Kb2!
    • 1.Qd6?
      • threat
        • 2.Qxb4#
      • 1...Ka3
        • 2.Qxb4#
      • 1...Kc3
        • 2.Qxb4#
      • 1...Kb2!
  • Keys
    • 1.Qd4!
      • 1...Ka3
        • 2.Qxb4#

This is a version of 182232

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT,P_PINP(b)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
        • K(a);N_SPINP(b),S_FLIGHT::QAR1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
        • K(a);P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::QAB1(C),XP(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).