MESON Chess Problem Database

Problem Display
PID: 72155 (b1r4k/4N1p1/8/2p3N1/8/K1Q1B1br/8/8 w - - 0 1)

Onyschuk, Eugene

Chess, 1952

b1r4k/4N1p1/8/2p3N1/8/K1Q1B1br/8/8

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rh7
      • 2.Sf7#
    • 1...Rg8
      • 2.Sg6#
  • Keys
    • 1.Bd4!
      • threat
        • 2.Bxg7#
      • 1...cxd4
        • 2.Qxc8#
      • 1...Rh7
        • 2.Sf7#
      • 1...Rg8
        • 2.Sg6#
      • 1...Be5
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);SBLOCK::S(D)
    • R(f);SBLOCK::S(E)
  • Actual
    • B(C);
    • Threat
      • B(C),XP(d)
    • Vars
      • P(c);N_SPINP(d),OGATE,XB(C)::QAR(B),XR(f)
      • R(b);SBLOCK::S(D)
      • R(f);SBLOCK::S(E)
      • B(a);N_SPINP(d),OGATE,P_PINQ(B)::QAR(B),XR(b)
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).