The infamous Pantaloons Enigma that has haunted the thoughts of gamers everywhere was not recognized as such when it began, way back in Baldur's Gate 1, when the protagonist reached the first destination after leaving Candlekeep: The Friendly Arm Inn. Being as this was so near the very beginning of the game, when the unnamed nobleman on the third floor mistook the protagonist for a launderer and gave him or her a pair of Golden Pantaloons with a rather humourous description, the first reaction was probably to get rid of them by throwing them away or giving them back to the nobleman. The protagonist had yet to learn of the mystery and value of seemingly worthless objects.
When the protagonist reached the realms of Amn in Baldur's Gate 2, yet another pair of pantaloons were obtainable. By visiting the Athkatla cemetery and rescuing a man nearly buried alive, a clue could be obtained: a piece of red cloth torn from the shirt of his kidnapper who was said to be in the Bridge District. By visiting this district, a man named Am-Si could be found wearing the same bright-red clothing, standing by the shore as if staring out to the far horizon. When confronted, he then would panic and give his compatriots' location away and they would reward him with death for his foolishness. Upstairs in their hideout: the kidnappers' current prey, a noblewoman named Lady Elgea, awaiting her release or ransom.
Depending on the protagonist, there could be two outcomes to this. The noblewoman could be freed and depart with no obligation, or the protagonist could decide to collect the ransom due by gleaning the location from a note left on a bookshelf in the area. By traveling to the Copper Coronet in the Slums District at night, a nobleman named Welther would appear. He would then proceed to pay the protagonist the ransom: a pair of Silver Pantaloons. Nothing the protagonist could do or say could change the amount or type of the ransom payment. The protagonist's reputation would then fall by two points for being recognizably involved in a kidnapping. (From Rico Suave: "Instead of talking to the man near the Copper Coronet in the Slums to retrieve the SILVER pantaloons... try pick-pocketing him. There is NO reputation hit, AND you can go back to the woman (Lady Elgea), speak to her, and release her for slightly less experience points than if you let her go in the first place. Not too bad if your paladin is looking the other way!") Returning to the house in the Bridge District would only cause the protagonist to be attacked by several Amnish Legionaries and two Cowled Enforcers. Surprisingly, the protagonist could do away with all of them if sufficiently skilled and suffer no further reputation loss. Still, this was not very enigmatic, and again the Silver Pantaloons would probably end up being sold or disposed of, having no use whatsoever.
The presence and scope of the Enigma was not made clear until the protagonist visited Spellhold, the common name for the Residence For The Magically Deviant, an asylum located on an island north of the town of Brynnlaw. Introduced to the inmates there by a thinly disguised Jon Irenicus, one inmate by the name of Wanev proved to be the previous co-ordinator of the asylum. Still convinced that he was, if the protagonist spoke to him twice, the second time Wanev would give over a "memo" containing seeming nonsense, but actually a cipher, as shall be explained.
And yet, there was still one further step that needed to be taken in order to divine the Enigma. Speaking to Wanev again (perhaps many times) would just obtain a copy of the same "memo", but perhaps, very rarely, a different "memo" would be given, with a different cipher with a different key.
The first "memo" contained the following:
Qc terxepssrw evi jypp sj aiewipw. Mrjsvq xli Uyiir, ws xlex wli qmklx wlss xliq eaec. Livi ai ks 'vsyrh xli qypfivvc fywl. Ks qsroic KS!
Upon analysis, the cipher was revealed to be a rotation substitution cipher obtained from shifting of the letters of the alphabet four steps forward, and wrapping around to the beginning when the end was reached, as below:
Plaintext a b c d e f ... w x y z Enciphered e f g h i j ... a b c d
When deciphered, this reads:
My pantaloons are full of weasels. Inform the Queen, so that she might shoo them away. Here we go 'round the mulberry bush. Go monkey GO!
The second and far more hidden "memo" contained the following:
Aqw vjkpm K co etcba, dwv vjga ycpv aqw vq vjkpm vjcv. K mpqy ugetgvu. Mggr vjg rcpvcnqqpu. Cnycau mggr vjg rcpvcnqqpu.
This cipher was also a rotation substitution cipher like the last, but the shifting of the letters of the alphabet is two steps forward instead of four, again wrapping around to the beginning:
Plaintext a b c d e f g h ... y z Enciphered c d e f g h i j ... a b
And the deciphered message finally set in stone that this was indeed an Enigma:
You think I am crazy, but they want you to think that. I know secrets. Keep the pantaloons. Always keep the pantaloons.
Anyone familiar with Baldur's Gate 1 and the Golden Pantaloons would at this point wonder what would happen if the Golden Pantaloons were carried by them throughout the game, and what Irenicus would do with them when he found them on the protagonists' inventory, so this is exactly what I did, exporting my character from Baldur's Gate 1, and importing back into Baldur's Gate 2 while holding the Golden Pantaloons...
...and another phase of the Engima revealed itself. Very few of the possessions of the protagonist character from Baldur's Gate 1 will follow them into Amn: the items one will find that were present in Baldur's Gate 1 will be the same whether the character was exported or not, or holding them or not, with rare exceptions, and only in Irenicus' dungeon. As well, if the protagonist was holding the swords or armour of Drizzt Do'Urden, which were by far the best weapons and armour in the game, not only will the protagonist lose them when imported, but eventually Drizzt Do'Urden will be met after journeying from the Underdark exit map, and will be most displeased at this. Yet, the Golden Pantaloons do follow the protagonist, and can be found in the very first area: in Jon Irenicus' dungeon, behind a trapped painting in the room with the jailer golem, and can be retrieved within seconds of beginning the game.
Certain I was close to the solution of the Enigma, I was careful to obtain the Silver Pantaloons by the method mentioned previously, and reputation be damned. For the remainder of the game, I carried them with me, often keeping them in my main inventory rather than the Bag Of Holding for fear they would not be seen there should I talk to the critical character required to fulfill the conditions and bring the Enigma to a close. Nothing happened... at least until the Throne Of Bhaal expansion...
The Throne Of Bhaal expansion brought new hope that the Enigma would finally be solved once and for all, so a sharp lookout for Pantaloons was kept. Several powerful Bhaalspawn were felled and the game mostly completed, with none in sight. Yet on exploring the desert town of Amkethran, someone could be found who turned out to be the key figure in this Engima: a gnomish smith named Kerrick, who had taken up shop with Lazarus Librarus, originally from the now-wrecked Saradush, in the northwest, accessible by a tricky system of ladders not for those with a fear of heights.
Manning a machine like a steam press stuffed with fabric, he indicated that the protagonist should search for the remaining component. Three were required, which explained the inability of the protagonist to solve the Engima prior to this.
The next stop of the protagonist in the quest to eliminate other Bhaalspawn could be the lair of Abazigal, and the dungeons beneath. There, three humourous and inexperienced adventurers could be met. While initially petrified, damaging the hovering eyes nearby them would cause a mage named Iycanth to appear, offer a quest to retrieve the missing eyestalk, and then suggest "subcontracting" the job to the inexperienced adventurers. They could be restored with a single Stone To Flesh scroll (though usually three would be required, one per creature) and given the quest. They would return after a six-day wait not only with the required eyestalk, but also a pair of Bronze Pantalettes, a set of metallic underwear that was the final component to the Enigma.
Returning to Kerrick the Smith in Amkethran, he would then forge the Golden Pantaloons, the Silver Pantaloons, and the Bronze Pantalettes, for no charge in gold whatsoever, into:
And so is the fabulous Pantaloons Enigma solved, at least, until it reappears in Neverwinter Nights with a set of three-dimensional, bump-mapped, OpenGL-rendered Plaid Pantaloons to tease the minds of players everywhere.