I'm a huge fan of math and I love solving. the problem I found with this game is that there was no real consistency. if I remove certain blocks, then I would either make the next puzzle easy or difficult depending on how many i removed. but I could never find the right amount to take so I couldn't solve it in time after a while. It could be just me, but I'm not sure how well this works to solve an equation
It's very nice, but I get the strange feeling, that the subtraction should be blue and addition should be red (as in electronics, physics, etc.) since it gets me dizzy sometimes at fast operations.
Quite fun, very challenging to reach a high score, but critically flawed by the fact that some target combinations are unavailable - this is worse if you have used a couple of large chains recently, and have been left with only a few tiles to manipulate. A faster regeneration rate and targets that are guaranteed to be feasible would make the game less frustrating and improve a player's sense that their score is meaningful (i.e. depends more on the skill of the player than on luck over choice of targets).
Most of the time there are multiple possible chains to reach a given target. Perhaps in order to give the game a sense of difficulty progression, it should evolve from giving targets which have been checked to guarantee many possible chains (e.g. at the beginning, perhaps the game should try find a target value with at least 5 possible chains), to ones for which fewer possible chains have been checked (so although in some cases there might be 5 chains, the computer's only checked to guarantee there are e.g. two). This would be a better method of increasing the difficulty than simply increasing the size of the target number, since at present not all the target numbers are achievable.
Poryhedron you are too stupid to insult. (Great game by the way, at least not for the retardeds...)
Very enjoyable little game, a few min well spent.