Problem Display
PID: 120638 (8/3k1N2/3P2B1/8/K7/8/8/4Q3 w - - 0 1)

Kuligin, Nikolai Volodimirovich

Mezija, 1995

8/3k1N2/3P2B1/8/K7/8/8/4Q3

#2

5 + 1


6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION


  • SOUND
  • Tries
    • 1.Qc3?
      • 1...Ke8
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qb1?
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc8
        • 2.Bf5#
      • 1...Ke8!
    • 1.Qc1?
      • 1...Ke8
        • 2.Qc8#
      • 1...Ke6!
    • 1.Qe2?
      • 1...Kc6
        • 2.Qb5#
      • 1...Kc8!
    • 1.Qe5?
      • 1...Kc6
        • 2.Qb5#
      • 1...Kc8!
    • 1.Qe7+?
      • 1...Kc8
        • 2.Qc7#
      • 1...Kc6!
  • Keys
    • 1.Qa5!
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc8
        • 2.Qc7#
      • 1...Ke8
        • 2.Qd8#

Anticipated by 231090(1927), 24210(1927), 33184(1938), 16378(1940), 30942(1943), 47022(1955), 73436(1961), 12363(1978), 142078(1989), 84992(1992)

This anticipates 79159(2005)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR1(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).