MESON Chess Problem Database

Problem Display
PID: 178322 (8/8/8/6k1/8/8/1BB1Q3/7K w - - 0 1)

Restad, Birger

Morgenbladet, 1928

8/8/8/6k1/8/8/1BB1Q3/7K

#2

4 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kg2?
      • 1...Kf4
        • 2.Bc1#
      • 1...Kh4
        • 2.Bf6#
      • 1...Kh6!
    • 1.Kh2?
      • 1...Kf4
        • 2.Bc1#
      • 1...Kh4
        • 2.Bf6#
      • 1...Kh6!
    • 1.Qf3?
      • 1...Kh4
        • 2.Bf6#
      • 1...Kh6!
    • 1.Qc4?
      • 1...Kh6
        • 2.Qh4#
      • 1...Kh5!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Bc1#
        • 2.Bg7#
        • 2.Qh4#
        • 2.Qg6#
      • 1...Kxg4!
    • 1.Qe4?
      • 1...Kh6
        • 2.Qg6#
        • 2.Qh4#
      • 1...Kh5!
  • Keys
    • 1.Bd1!
      • 1...Kf4
        • 2.Qe5#
      • 1...Kh4
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kg6
        • 2.Qh5#
      • 1...Kh6
        • 2.Qh5#

Anticipated by 2392(0000), 120940(1877), 214368(1878), 9327(1880), 222385(1884), 222932(1885), 158307(1906-1907), 184881(1908), 189438(1911), 189685(1912)

This anticipates 96980(1943)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::B(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);P-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).