Whether an asmachta transaction is effective: Eruvin 82a; Nedarim 27b; Bava Metzia 48b, 66a-b, 77b
If asmachta is ineffective, does that mean that we reverse it, and any forgiving of ownership is considered mistaken and void: Bava Metzia 66b
Whether asmachta is effective where the parties formally agreed to carry out their obligations in the event that they would be triggered: Nedarim 27b
Whether an asmachta is effective where a blocking-condition didn't come true, but the obligated party could have made it so [and didn't]: Nedarim 27b; Bava Metzia 73b-74a
Whether an asmachta is effective if the parties met after the transaction was initiated and the obligated party confirmed his obligation: Bava Metzia 66b
Whether an asmachta is effective if the parties met after the obligation was triggered and the obligated party confirmed his obligation: Bava Metzia 66b
Whether the behavior of the obligated party influences our read of his frame of mind, and his commitment to the obligation: Bava Metzia 66b
Whether an object pledged by a debtor under an asmachta obligation is considered to have an automatic lien [apotiki] on it: Bava Metzia 66b
Examples
X purchased a field from Y, without protection in the event that Y's creditors would claim it from him. To make X feel better, Y promised that in the event of collection, he would pay X for his improvement of the field, for produce, etc.: Bava Metzia 65b-66a
X purchased a field from Y, and Y promised that in the event it would be collected for Y's pre-existing debt, he would give X property which was his second-best - and then the best property was ruined: Bava Metzia 66b
X purchased a field from Y, with a down payment, and X stipulated that if he backed out he would forgive the deposit, and Y stipulated that if he would back out he would pay back double the deposit: Bava Metzia 48b, 77b
X lent money to Y and accepted a field as collateral, declaring that should Y fail to pay by a certain date, he would claim Y's field as payment: Bava Metzia 66a-b
X lent money to Y, and Y stipulated that he would pay with certain goods if he didn't pay back the debt by a certain date - and then the goods appreciated: Bava Metzia 66b
X sold a field to his relative Y, planning to buy it back when he would have the money, because Y would likely be kind to him: Bava Metzia 67a
X gave Y money to purchase wine, Y pledged to refund his money with extra should he fail and the wine appreciate, and then Y failed to purchase the wine: Bava Metzia 73b-74a
X accepted license to work a field from Y, to split the proceeds with Y, and he pledged that should he fail to work the field, he would pay Y as if the field had yielded great produce: Bava Metzia 73b-74a