Okay, I ran into another like #202. This one is the very nice #394, but flawed. The alternative key 1... 32-38 works also. If 2.48x17, there is 2... 16x9 3.10x19 9x40#. If instead 2.10x9, there is …

@muldrothaEDH Regarding openings, draughts on large boards (including 10x10) is almost independent from opening theory. A player needs not to know any opening (except if he or she wants to apply some …

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Puzzel 1449 kan op 2 manieren maar ik ga 17 ratingpunten omlaag 37-31 47-41 48-42 kan ook

op zet 30 van mijn partij tegen Voetbaltrainer speelde ik 8-12. De computer geeft aan dat 23-28 beter was geweest. Dat was het ook. Ik twijfelde in de partij tussen 23-28, dat er positioneel heel goed…

I often find puzzles where a winning move isn't counted as correct because another move is even better. I get that the exercise is to find the best move, but at the same time it can be quite frustrati…

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…

Diagonal draughts on 10x10 board with International or Frisian capturing rules can be implemented easily. The difference consists only in initial position and crowning squares. For diagonal Intern…

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…