MESON Chess Problem Database

Problem Display
PID: 141518 (1B6/8/8/2K3p1/5qb1/8/5RPk/1Q5N w - - 0 1)

Hoek, Willem

Probleemblad, 1976

1B6/8/8/2K3p1/5qb1/8/5RPk/1Q5N

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Bxg3#
    • 1...Qe5+
      • 2.Bxe5#
    • 1...Qd6+
      • 2.Bxd6#
    • 1...Qc7+
      • 2.Bxc7#
  • Tries
    • 1.g3+?
      • 1...Kh3
        • 2.Qf1#
      • 1...Qxf2+!
  • Keys
    • 1.Qf1!
      • 1...Qe5+
        • 2.Bxe5#
      • 1...Qd6+
        • 2.Bxd6#
      • 1...Qc7+
        • 2.Bxc7#
      • 1...Qxb8
        • 2.g3#
      • 1...Qg3
        • 2.Bxg3#
      • 1...Bd1
        • 2.g4#
      • 1...Be2
        • 2.g4#
      • 1...Bf3
        • 2.gxf3#
      • 1...Bh3
        • 2.gxh3#
      • 1...Bf5
        • 2.g4#
      • 1...Bh5
        • 2.g4#
      • 1...Be6
        • 2.g4#
      • 1...Bd7
        • 2.g4#
      • 1...Bc8
        • 2.g4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • Q(b);OGATE::B(F),XQ(b)
    • Q(b);CHECK,OGATEB::B(F),XQ(b)
  • Tries
    • Try
      • P(D);CHECK,N_PINQ(b)
      • Vars
        • K(a);P-FLIGHT::QAB(A)
      • Refutation
        • Q(b);CHECK,XR(C)
  • Actual
    • Q(A);
    • Vars
      • Q(b);CHECK,OGATEB::B(F),XQ(b)
      • Q(b);N_GUARD,N_SPINQ(b),XB(F)::R(C)+P(D)
      • Q(b);OGATE::B(F),XQ(b)
      • B(c);OGATE::R(C)+P(D)
      • B(c);OGATE::R(C)+P(D),XB(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).