MESON Chess Problem Database

Problem Display
PID: 75072 (4B3/1N6/8/p2r4/K1k5/4Q3/8/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, Reitman-60 JT, 1998

4B3/1N6/8/p2r4/K1k5/4Q3/8/8

#2

4 + 3

6167 Viktor Chepizhny 2007
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qc5#
    • 1...Rd4
      • 2.Qb3#
  • Tries
    • 1.Bg6?
      • 1...Rd1
        • 2.Qc5#
      • 1...Rd2
        • 2.Qc5#
      • 1...Rd3
        • 2.Qc5#
        • 2.Qxd3#
      • 1...Rd4
        • 2.Qb3#
      • 1...Rb5
        • 2.Qd3#
      • 1...Rc5
        • 2.Qxc5#
        • 2.Qd3#
      • 1...Re5
        • 2.Qd3#
      • 1...Rg5
        • 2.Qd3#
      • 1...Rh5
        • 2.Qd3#
      • 1...Rd6
        • 2.Qc5#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rd8
        • 2.Qc5#
      • 1...Rf5!
  • Keys
    • 1.Bc6!
      • 1...Rd3
        • 2.Qc5#
      • 1...Rd1
        • 2.Sxa5#
      • 1...Rd2
        • 2.Sxa5#
      • 1...Rd4
        • 2.Qb3#
      • 1...Rb5
        • 2.Sd6#
      • 1...Rc5
        • 2.Sd6#
      • 1...Re5
        • 2.Sd6#
      • 1...Rf5
        • 2.Sd6#
      • 1...Rg5
        • 2.Sd6#
      • 1...Rh5
        • 2.Sd6#
      • 1...Rd6
        • 2.Sxa5#
        • 2.Sxd6#
      • 1...Rd7
        • 2.Sxa5#
      • 1...Rd8
        • 2.Sxa5#

Anticipated by 77640(1978)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,SBLOCK::QAR1(A)
    • R(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • B(D);
      • Vars
        • R(c);N_GUARD::QAR1(A)
        • R(c);SBLOCK::QAB1(A)
        • R(c);N_GUARD::QAB1(A)
      • Refutation
        • R(c);
  • Actual
    • B(D);
    • Vars
      • R(c);N_GUARD,SBLOCK::QAR1(A)
      • R(c);N_GUARD::S(C),XP(b)
      • R(c);SBLOCK::QAB1(A)
      • R(c);N_GUARD::S(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).