LPN.SWI-PROLOG.ORG has 9 keywords

First position — 1 keywords

Keywords Analytic

the 1th position for lpn.swi-prolog.org

#	Keyword	Results	Change	Check Date
1	source code prolog frog	271 000	0	2015-11-03

positions above than 3th lpn.swi-prolog.org

#	Keyword	Results	Change	Check Date
9	frog problem in prolog	1 420 000	0	2014-12-22
10	crossword program code in prolog	8 130	0	2015-11-11
10	prolog source code maze	20 300	1	2015-11-04
22	source code crosswords by php	165 000	0	2015-11-17
23	prolog maze solve code	16 600	0	2015-11-05
31	swap a binary tree	106 000	0	2016-01-22
33	html code for binary tree in php	186 000	0	2015-05-28
46	source code for cross word puzzel	171 000	0	2015-11-16