Problem Display
PID: 206805 (6k1/6B1/3KPQ2/8/6br/8/8/8 w - - 0 1)

Radchenko, Sergei Vladimirovich

Sachova skladba, 1991

6k1/6B1/3KPQ2/8/6br/8/8/8

#2

4 + 3


5454 Near Snap 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Rh7
      • 2.Qf7#
      • 2.Qf8#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Qg7#
      • 1...Kh7
        • 2.Qg7#
      • 1...Rxh6!
    • 1.Bf8?
      • threat
        • 2.Qg7#
      • 1...Kh7
        • 2.Qg7#
      • 1...Rh7!
  • Keys
    • 1.Bh8!
      • threat
        • 2.Qg7#
      • 1...Kh7
        • 2.Qg7#
      • 1...Rxh8
        • 2.Qf7#
      • 1...Rh7
        • 2.Qd8#

Anticipated by 129888(1935)

This anticipates 23024(1998)

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
      • Refutation
        • R(b);XB(D)
    • Try
      • B(D);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);S_FLIGHT::QAR1(C)
      • Refutation
        • R(b);
  • Actual
    • B(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);S_FLIGHT::QAR1(C)
      • R(b);SBLOCK,XB(D)::QAB1(C)
      • R(b);SBLOCK::QAR(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).