MESON Chess Problem Database

Problem Display
PID: 82440 (4K2k/8/1Q2bN2/6R1/8/8/8/8 w - - 0 1)

Zinoviev, Nikolai

Chepizhni-60 JT (Kudesnik), 1994

4K2k/8/1Q2bN2/6R1/8/8/8/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rg8#
    • 1...Bg4
      • 2.Rg8#
    • 1...Bf5
      • 2.Rg8#
    • 1...Bc8
      • 2.Rg8#
    • 1...Bg8
      • 2.Rxg8#
  • Tries
    • 1.Kf8?
      • threat
        • 2.Rh5#
      • 1...Bg4
        • 2.Rg8#
      • 1...Bf5
        • 2.Rg8#
      • 1...Bg8
        • 2.Rxg8#
      • 1...Bf7!
  • Keys
    • 1.Qb8!
      • 1...Bd7+
        • 2.Kxd7#
      • 1...Bf7+
        • 2.Kxf7#
      • 1...Ba2
        • 2.Qh2#
      • 1...Bb3
        • 2.Qh2#
      • 1...Bh3
        • 2.Rg8#
      • 1...Bc4
        • 2.Qh2#
      • 1...Bg4
        • 2.Rg8#
      • 1...Bd5
        • 2.Qh2#
      • 1...Bf5
        • 2.Rg8#
      • 1...Bc8
        • 2.Rg8#
      • 1...Bg8
        • 2.Rxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::R1(A)
    • B(a);N_GUARD::R1(A),XB(a)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • R(A)
      • Vars
        • B(a);N_GUARD::R1(A)
        • B(a);N_GUARD::R1(A),XB(a)
      • Refutation
        • B(a);
  • Actual
    • Q(B);
    • Vars
      • B(a);CHECK::QAR(B)+K(D),XB(a)
      • B(a);N_GUARD::QAR(B)
      • B(a);N_GUARD::R1(A)
      • B(a);N_GUARD::R1(A),XB(a)
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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).