MESON Chess Problem Database

Problem Display
PID: 47459 (8/4k3/1P5K/7Q/1R6/7B/1B6/8 w - - 0 1)

Hoek, Willem

16th Place, Match: Indonesia - Netherlands, 1969

8/4k3/1P5K/7Q/1R6/7B/1B6/8

#2

6 + 1

102 Probleemblad 1970
2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
56 The Problemist 2003
3713 Snap 2012
5454 Near Snap 2014
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Bf6#
  • Tries
    • 1.Kg7?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kd6!
    • 1.Bd4?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8!
    • 1.Be5?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8!
    • 1.Bg7?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kd6!
    • 1.Rc4?
      • 1...Kd6
        • 2.Ba3#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8!
    • 1.Rd4?
      • 1...Kf6
        • 2.Re4#
        • 2.Rd7#
      • 1...Kf8!
    • 1.Re4+?
      • 1...Kd8
        • 2.Bf6#
        • 2.Re8#
        • 2.Qd1#
        • 2.Qe8#
        • 2.Qh4#
        • 2.Qd5#
        • 2.Qg5#
      • 1...Kf8
        • 2.Re8#
        • 2.Qe8#
      • 1...Kd6!
    • 1.Rf4?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kd6!
    • 1.Rb5?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8!
    • 1.Qg6?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8!
  • Keys
    • 1.Ba3!
      • 1...Kd6
        • 2.Rc4#
      • 1...Kf6
        • 2.Rf4#
      • 1...Kd8
        • 2.Rd4#
      • 1...Kf8
        • 2.Rg4#

This anticipates 24216(1970), 268612(1996), 66974(1996), 163117(2015)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(A)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • 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);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::B(A)+R(C)
      • K(a);S_FLIGHT::R(C)
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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).