Puzzle 2155: 1. 38-32 27x47 2. 37-31 47x20 3. 26-21 is also winning.

Puzzle 2099: 5. 05-37 (coup Turc!) and 6. 42-37 is also winning.

Puzzle 2062: several winning variants are missed: - 2. 27-21 3. 34-29 - 2. 27-21 3. 37-31 - 3. 27-21

Puzzle 1948: lots of winning moves are marked as incorrect, such as 4. 42-37, 5. 42-37, and 5. 34-30.

About 1059: yes, lots of moves and final squares for the King are correct. 42-37 and 47-41 are considered correct in the puzzle (as well as the different squares to end with the King). Unfotunately 38…

Puzzle 1059: on the sixth move (with opposite kings) multiple wins are possible apart from the expected 38-32. My 38-33 (29x38 43x32 etc. try) was deemed wrong. I didn't check 42-37 and 47-41, but tho…

Here is a nice puzzle that Scan was unable to solve even at depth 37: https://lidraughts.org/study/foIbE6cs/FEuzIPfi (I dare to say that any upper-intermediate player can solve it easily).

I was testing Scan's endgame technique in International draughts by comparing human approach and AI approach. There is a nice puzzle by Noome and Hortsman (I quote their names by cyrillic retransla…

After 2.37-31 4.33-29 5.43-39 it is also possible to play 6.39-33 and 7.41-37 iso 6.41-37 and 8.39-33 etc.

it's ok,thanks you the difference it's after 1. 21-27, and so on,he can take 16*27 instead of 23*32 because of 21-26. and I didn't see 13-18 and 08-13 while white take 5*37