I had read some good reviews, so I ordered. And I agree (with the positive feedback). I will add just that the translator said that the author had a much more "subversive" than learning computing goal: learning by "fun"! Well it succeeded. This is another style that the series of "schemers", but we learn gradually and in good spirits. I think it's still a good (very) introduction to Prolog, an ultra-competitive price compared to other references, obviously certainly excellent, but much less affordable (at the time I write this).
