Problem Display
PID: 172464 (8/1Q6/8/ppp5/1k6/8/1K6/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1999

8/1Q6/8/ppp5/1k6/8/1K6/8

#2

2 + 4


5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION


  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qe4#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qb3#
      • 1...Ka4
        • 2.Qa3#
        • 2.Qb3#
      • 1...Kc4
        • 2.Qe4#
      • 1...a4
        • 2.Qc3#
      • 1...c4
        • 2.Qa3#

Anticipated by 171072(1996)

This anticipates 47428(2002)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(c),P-FLIGHT::QAR2(B)
  • Actual
    • Q(B);N_PINP(c)
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • P(b);SBLOCK::QAB1(B)
      • P(d);SBLOCK::QAB1(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).