MESON Chess Problem Database

Problem Display
PID: 177840 (2r5/6Qp/8/4Pp2/3P3p/Nnpk1P2/2Np2n1/3B3K w - - 0 1)

Mochalkin, Oleksandr Viktorovich

Sahs (Latvia), 1983

2r5/6Qp/8/4Pp2/3P3p/Nnpk1P2/2Np2n1/3B3K

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qxh7#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxf5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Rf8
        • 2.Qb5#
      • 1...Se3
        • 2.Sb4#
      • 1...Sc5
        • 2.Qb5#
        • 2.dxc5#
      • 1...f4
        • 2.Qf5#
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATEB::QAB(H),XP(h)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XP(g)
    • Vars
      • S(c);OGATE,P_SPINS(c),XP(F)::QAR1(H),XS(c)
      • R(i);N_GUARD::QAB(H)
      • S(b);SBLOCK::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).