Level 1:

Double Bishop Mate (9 Puzzles)

Double Bishop Mate-(level 1)Download

Double Bishop Mate (9 Puzzles) With Answers

Double Bishop Mate-(level 1)-with answersDownload

Level 2:

Double Bishop Mate (9 Puzzles)

Double Bishop Mate-(level 2)Download

Double Bishop Mate (9 Puzzles) With Answers

Double Bishop Mate-(level 2)-with answersDownload

Level 3:

Double Bishop Mate (9 Puzzles)

Double Bishop Mate-(level 3)Download

Double Bishop Mate (9 Puzzles) With Answers

Double Bishop Mate-(level 3)-with answersDownload