MESON Chess Problem Database

Problem Display
PID: 177984 (2r1r3/2pp4/k3N3/1p6/1P6/5B2/K4B2/3Q4 w - - 0 1)

Viksna, Kristaps

Sahs (Latvia), 1986

2r1r3/2pp4/k3N3/1p6/1P6/5B2/K4B2/3Q4

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Sxc7#
    • 1...Rb8
      • 2.Sxc7#
    • 1...Rcd8
      • 2.Sxc7#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qa7#
      • 1...Ra8
        • 2.Sxc7#
      • 1...c5!
    • 1.Qd5?
      • threat
        • 2.Qb7#
      • 1...Rb8
        • 2.Sxc7#
      • 1...c6!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qc6#
      • 1...Rxe6
        • 2.Qxc8#
      • 1...c5
        • 2.Qb7#
      • 1...Rb8
        • 2.Sxc7#
      • 1...c6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::S(F),XP(c)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • R(e);N_GUARD::S(F),XP(c)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(e);N_GUARD::S(F),XP(c)
      • Refutation
        • P(c);
  • Actual
    • Q(A);XP(d)
    • Threat
      • QAR2(A)
    • Vars
      • R(f);N_GUARD,XS(F)::QAB(A),XR(e)
      • P(c);OGATE::QAB1(A)
      • R(e);N_GUARD::S(F),XP(c)
      • P(c);OGATE::QAR1(A)
HTML5 logo

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).