MESON Chess Problem Database

Problem Display
PID: 229057 (b1R5/3N3K/3ppQBp/3k1np1/Rr6/4b1N1/q7/8 w - - 0 1)

Ovchinnikov, Valentin N

2/3 Prize, 64 Shakhmatnoe obozrenie, 1926

b1R5/3N3K/3ppQBp/3k1np1/Rr6/4b1N1/q7/8

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sb6#
    • 1...Sd4
      • 2.Be4#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sf6#
      • 1...e5
        • 2.Bf7#
      • 1...Rd4
        • 2.Qa5#
      • 1...Rb7
        • 2.Qc6#
      • 1...Bd4
        • 2.Qf3#
      • 1...Sd4
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,S_CUTB(b)::S(E)
    • S(e);OGATE::B(D)
  • Actual
    • Q(C);
    • Threat
      • S(E)
    • Vars
      • P(h);OGATEB::B(D)
      • R(c);OGATE::QAR(C)
      • R(c);P_PINS(E),S_CUTB(j)::QAB1(C)
      • B(b);OGATE,SBLOCK::QAB(C)
      • S(e);OGATE::B(D)
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).