MESON Chess Problem Database

Problem Display
PID: 161747 (1Q6/8/3K1Bk1/6P1/2B5/8/8/8 w - - 0 1)

Aizikowicz, Jakov

Shahmat, 1973

1Q6/8/3K1Bk1/6P1/2B5/8/8/8

#2

5 + 1

5454 Near Snap 2017
15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kh7
      • 2.Bd3#
      • 2.Qb1#
      • 2.Qg8#
  • Tries
    • 1.Ke5?
      • 1...Kh7
        • 2.Bd3#
        • 2.Qb1#
        • 2.Qg8#
      • 1...Kh5!
    • 1.Ke6?
      • 1...Kh7
        • 2.Bd3#
      • 1...Kh5!
    • 1.Be2?
      • 1...Kf7
        • 2.Bh5#
      • 1...Kh7
        • 2.Bd3#
      • 1...Kf5!
    • 1.Be6?
      • 1...Kh7
        • 2.Bf5#
        • 2.Qb1#
        • 2.Qg8#
      • 1...Kh5!
    • 1.Qb5?
      • 1...Kh7
        • 2.Qb1#
        • 2.Qf5#
      • 1...Kh5!
    • 1.Qc8?
      • 1...Kh7
        • 2.Bd3#
        • 2.Qf5#
        • 2.Qg8#
      • 1...Kh5!
    • 1.Qe8+?
      • 1...Kh7
        • 2.Bd3#
        • 2.Bg8#
        • 2.Qh5#
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qg8#
      • 1...Kf5!
  • Keys
    • 1.Qb4!
      • 1...Kf5
        • 2.Bd3#
      • 1...Kh5
        • 2.Bf7#
      • 1...Kh7
        • 2.Qb1#

Anticipated by 4744(1890), 189680(1912), 157400(1924)

This anticipates 161687(1987)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT::QAB(E)
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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).