MESON Chess Problem Database

Problem Display
PID: 79151 (8/1Q6/5K2/8/3k4/8/8/4BB2 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachsische Zeitung, 2002

8/1Q6/5K2/8/3k4/8/8/4BB2

#2

4 + 1

5454 Near Snap 2011
3713 Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Kf5?
      • 1...Ke3
        • 2.Qe4#
      • 1...Kc5!
    • 1.Ke6?
      • 1...Kc5
        • 2.Bf2#
      • 1...Ke3!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Bg2#
      • 1...Ke3!
  • Keys
    • 1.Bg2!
      • 1...Kd3
        • 2.Qe4#
      • 1...Ke3
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kc5
        • 2.Qb4#

Anticipated by 175785(1898), 183108(1907), 198114(1920), 140990(1979)

This anticipates 198080(2015)

FEATURES

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