MESON Chess Problem Database

Problem Display
PID: 156999 (1b6/kB6/2K5/2p5/5pR1/8/p7/7Q w - - 0 1)

Alekseev, Yuri Mikhailovich

Gravyura, 2014

1b6/kB6/2K5/2p5/5pR1/8/p7/7Q

#2

4 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...a1Q
      • 2.Qxa1#
    • 1...a1S
      • 2.Qxa1#
    • 1...a1B
      • 2.Qxa1#
    • 1...a1R
      • 2.Qxa1#
    • 1...f3
      • 2.Ra4#
    • 1...c4
      • 2.Qg1#
  • Tries
    • 1.Rg8?
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1S
        • 2.Qxa1#
      • 1...a1B
        • 2.Qxa1#
      • 1...a1R
        • 2.Qxa1#
      • 1...Be5
        • 2.Ra8#
      • 1...Bd6
        • 2.Ra8#
      • 1...Bc7
        • 2.Ra8#
      • 1...c4
        • 2.Qg1#
      • 1...f3!
  • Keys
    • 1.Qh8!
      • 1...a1Q
        • 2.Qxa1#
      • 1...a1S
        • 2.Qxa1#
      • 1...a1B
        • 2.Qxa1#
      • 1...a1R
        • 2.Qxa1#
      • 1...Be5
        • 2.Qa8#
      • 1...Bd6
        • 2.Qa8#
      • 1...Bc7
        • 2.Qa8#
      • 1...f3
        • 2.Ra4#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(b);OGATE::R(B)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
        • B(e);OGATE::R1(B)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Vars
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • B(e);OGATE::QAR1(A)
      • P(b);OGATE::R(B)
      • P(c);OGATEB::QAB(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).