Editing Castling (section)

===Prins vs. Day===
{{Chess diagram  
| tright
|Prins vs. Day, 1968
|rd|  |  |  |kd|  |  |  
|  |bd|  |pd|  |pd|  |  
|pd|  |  |  |pd|  |  |  
|  |  |  |  |kl|  |pd|  
|  |  |pl|  |qd|  |  |  
|pl|  |  |  |pl|  |  |  
|  |pl|  |  |bl|  |  |  
|rl|  |rl|  |ql|  |  |  
| White to play
}}
The diagram shows the final position of the game [[Lodewijk Prins]]–[[Lawrence Day]] (1968), where White resigned.<ref>{{cite web |url=http://www.chessgames.com/perl/chessgame?gid=1037399 |title=Prins vs. Day, Lugano 1968 |website=[[Chessgames.com]] }}</ref> Had the game continued, Black could have checkmated by castling:

:'''29. Kf6 Qf5+ 30. Kg7 Qg6+ 31. Kh8 0-0-0{{chessAN|#}}'''

(See [[Lawrence Day#Notable chess games|Lawrence Day's notable chess games]].)
{{clear}}