Problem Display
PID: 173962 (8/b7/4K3/Qp6/4k3/4p3/4P3/8 w - - 0 1)

Bottacchi, Antonio

Realismo e romanticismo nell'arte problemistica di Antonio B, 2005

8/b7/4K3/Qp6/4k3/4p3/4P3/8

#2

3 + 4


6490 yacpdb 2018
5454 Near Snap 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qb4#
    • 1...Bb8
      • 2.Qb4#
    • 1...b4
      • 2.Qe5#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qh4#
      • 1...Kf4
        • 2.Qh4#
      • 1...Bb8!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qh4#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf4
        • 2.Qh4#
      • 1...Bb8
        • 2.Qb4#

Anticipated by 47227(1849), 110515(1870), 36807(1898), 183106(1907), 193729(1916), 166257(1917), 149134(1929), 172254(1996)

This anticipates 169981(2017)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::QAR2(B)
    • B(d);N_GUARD::QAR(B)
    • P(c);OGATE::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • B(d);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • B(d);N_GUARD::QAR(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).