I've been playing a few more chess games against the software (FreeChess), and actually done very well, on my return. It's not that strong a programme, but it's free!! When I say not strong, I was quite good years ago, so it's easy for me to work out how to beat it, (provided I don't make simple errors).
The programme gets a bit stuck at times, and repeats moves, or does a non-move of no significance. It's doesn't seem to look that far ahead and at all the options.
And like most early chess programmes, it doesn't like end-games. So the best thing to do is keeping swapping down the pieces. You'd think with less pieces on the board, chess computers would like that, but they usually don't.
As for my style of chess. When I was younger, I used to be able to look at most options, and calculate 3-4 moves ahead, and sometimes more. I'd also check for anything unusual going on, maybe even sacrifices, and double check that there's not a piece covering a long diagonal that I haven't noticed. But now, with my aging fading brain, I look at a few options 2-3 moves ahead, don't double check things, play more intuitively, and hope for the best! That's what age (and maybe a lack of patience) does to you!!