MESON Chess Problem Database

Problem Display
PID: 196525 (4RR2/Q1p5/2p2Np1/B2PK1p1/1N1P2P1/4kPP1/2PpppB1/7b w - - 0 1)

Ruonala, Lauri Armas

3rd Prize, Suomen Shakki TT, 1957

4RR2/Q1p5/2p2Np1/B2PK1p1/1N1P2P1/4kPP1/2PpppB1/7b

#2

14 + 9

117 Suomen Shakki 1985

SOLUTION

  • SOUND
  • Sets
    • 1...cxd5
      • 2.Kxd5#
      • 2.Sbxd5#
      • 2.Sfxd5#
  • Keys
    • 1.dxc6!
      • threat
        • 2.Kd5#
        • 2.Sbd5#
        • 2.Sfd5#
        • 2.d5#
      • 1...Bxg2
        • 2.Sfd5#
      • 1...d1Q
        • 2.Sbd5#
      • 1...d1S
        • 2.Sbd5#
      • 1...d1B
        • 2.Sbd5#
      • 1...d1R
        • 2.Sbd5#
      • 1...e1Q
        • 2.Kd5#
      • 1...e1S
        • 2.Kd5#
      • 1...e1B
        • 2.Kd5#
      • 1...e1R
        • 2.Kd5#
      • 1...f1Q
        • 2.d5#
      • 1...f1S
        • 2.d5#
      • 1...f1B
        • 2.d5#
      • 1...f1R
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Actual
    • P(I);XP(g)
    • Threat
      • DUALS(4)
    • Vars
      • B(a);XB(B)::S(K)
      • P(b);::S(E)
      • P(c);::R(M)+K(J)
      • P(d);::QAB(L)+P(F)
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).