MESON Chess Problem Database

Problem Display
PID: 206475 (K5Q1/3p4/kbr5/pp6/1P2B3/N7/8/8 w - - 0 1)

Ooijkaas, P

Der Tijd, 1925

K5Q1/3p4/kbr5/pp6/1P2B3/N7/8/8

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bb7#
    • 1...Rc2
      • 2.Bb7#
    • 1...Rc3
      • 2.Bb7#
    • 1...Rc4
      • 2.Bb7#
    • 1...Rc5
      • 2.Bb7#
    • 1...Rd6
      • 2.Bb7#
      • 2.Qc8#
    • 1...Re6
      • 2.Bb7#
      • 2.Qc8#
    • 1...Rf6
      • 2.Bb7#
      • 2.Qc8#
    • 1...Rg6
      • 2.Bb7#
      • 2.Qc8#
    • 1...Rh6
      • 2.Bb7#
      • 2.Qc8#
    • 1...Rc8+
      • 2.Qxc8#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxb5#
      • 1...Rc8+
        • 2.Qxc8#
      • 1...Rxc4
        • 2.Bb7#
      • 1...bxc4
        • 2.b5#
      • 1...Rc5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(e);OGATE::B(C)
    • R(e);CHECK,N_GUARD::QAB(E),XR(e)
  • Actual
    • Q(E);P_PINP(b)
    • Threat
      • QAB1(E),XP(b)
    • Vars
      • R(e);CHECK,OGATE::QAB(E),XR(e)
      • R(e);N_SPINP(b),OGATE,XQ(E)::B(C)
      • P(b);N_SPINP(b),OGATE,XQ(E)::P(B)
      • R(e);OGATE::B(C)
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).