MESON Chess Problem Database

Problem Display
PID: 46096 (1B4b1/6Q1/8/3Ppk2/RrR4p/pP1n3P/K3P1nq/2b3rB w - - 0 1)

Koldijk, Albert Marinus

4th Place, Match: Denmark - Netherlands, 1946

1B4b1/6Q1/8/3Ppk2/RrR4p/pP1n3P/K3P1nq/2b3rB

#2

10 + 11

102 Probleemblad 2002
102 Probleemblad 2006
56 The Problemist 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.e4#
    • 1...Sgf4
      • 2.Be4#
    • 1...Sdf4
      • 2.e4#
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qg6#
      • 1...Rxg4
        • 2.hxg4#
      • 1...Sdf4
        • 2.Qxe5#
      • 1...Rb6
        • 2.e4#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf8#
        • 2.Qf7#
      • 1...Sgf4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);SBLOCK::P(C)
    • S(c);OGATE,P_PINP(C),SBLOCK::B(A)
    • S(f);SBLOCK::P(C)
  • Actual
    • R(G);
    • Threat
      • QAB1(I)
    • Vars
      • R(g);OGATE,XR(G)::P(E),XR(g)
      • S(f);N_GUARD,S_CUTQ(d)::QAR1(I),XP(i)
      • R(g);N_GUARD::P(C)
      • B(a);N_GUARD::QAR1(I),XB(a)
      • B(k);N_GUARD::QAR2(I),XB(k)
      • S(c);P_PINP(C),S_CUTB(a)::QAR1(I)
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).