MESON Chess Problem Database

Problem Display
PID: 178202 (6rk/6pp/8/6R1/8/8/1Q6/1K6 w - - 0 1)

Parkhomenko, Nikolai A

Vratnica-64, 2004

6rk/6pp/8/6R1/8/8/1Q6/1K6

#2

3 + 4

6490 yacpdb 2018
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxg7#
    • 1...Rb8
      • 2.Qxb8#
    • 1...Rc8
      • 2.Qxg7#
    • 1...Rd8
      • 2.Qxg7#
    • 1...Re8
      • 2.Qxg7#
    • 1...Rf8
      • 2.Qxg7#
    • 1...h5
      • 2.Rxh5#
  • Tries
    • 1.Qe5?
      • 1...Rb8+
        • 2.Qxb8#
      • 1...Ra8
        • 2.Qxg7#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxg7#
        • 2.Qxe8#
      • 1...Rf8
        • 2.Qxg7#
      • 1...h5
        • 2.Rxh5#
      • 1...h6!
  • Keys
    • 1.Rg6!
      • 1...hxg6
        • 2.Qh2#
      • 1...Ra8
        • 2.Qxg7#
      • 1...Rb8
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxg7#
      • 1...Rd8
        • 2.Qxg7#
      • 1...Re8
        • 2.Qxg7#
      • 1...Rf8
        • 2.Qxg7#
      • 1...h5
        • 2.Rh6#
      • 1...h6
        • 2.Rxh6#

Anticipated by 269736(1925)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,SBLOCK::QAB1(B),XP(a)
    • R(c);OGATEB,P_PINQ(B)::QAR(B),XR(c)
    • R(c);N_GUARD::QAB1(B),XP(a)
    • P(b);OGATEB::R(C),XP(b)
  • Tries
    • Try
      • Q(B);
      • Vars
        • R(c);CHECK,OGATEB::QAR(B),XR(c)
        • R(c);N_GUARD,SBLOCK::QAB1(B),XP(a)
        • R(c);N_GUARD::QAB1(B),XP(a)
        • P(b);OGATEB::R(C),XP(b)
      • Refutation
        • P(b);
  • Actual
    • R(C);
    • Vars
      • P(b);OGATEB,XR(C)::QAR(B)
      • R(c);N_GUARD,SBLOCK::QAB1(B),XP(a)
      • R(c);OGATEB,P_PINQ(B)::QAR(B),XR(c)
      • R(c);N_GUARD::QAB1(B),XP(a)
      • P(b);OGATEB::R(C)
      • P(b);OGATEB::R(C),XP(b)
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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).