lidraughts.org/training/548

1...17-22 2. 28x17 11x31 3. 36x27 16-21 4. 27x16 23-28 5. 32x12 13-18 6. 12x23 19x50
Or
1...17-22 2. 28x17 11x31 3. 36x27 23-28 4. 32x12 16-21 5. 27x16 13-18 6. 12x23 19x50

Is winning

lidraughts.org/training/549

1... 28-33 2. 39x6 27-32 3. 38x27 24-30 4. 35x24 19x46 is still winning

lidraughts.org/training/554
1. 28-22 18x36 2. 34-30 25x34 3. 40x9 3x14 4. 35-30 24x35 5. 37-31 36x27 6. 32x3 is still completely winning

lidraughts.org/training/583

1...17-22 2. 28x17 26-31 3. 36x27 24-29 4. 34x23 14-19 5. 23x14 13-19 6. 14x23 4-10 7. 25x14 10x50

1...17-22 2. 28x17 24-29 3. 34x23 26-31 4. 36x27 14-19 5. 23x14 13-19 6. 14x23 4-10 7. 25x14 10x50

1...17-22 2. 28x17 24-29 3. 34x23 14-19 4. 23x14 26-31 5. 36x27 13-19 6. 14x23 4-10 7. 25x14 10x50

1...24-29 2. 34x23 17-22 3. 28x17 26-31 4. 36x27 14-19 5. 23x14 13-19 6. 14x23 4-10 7. 25x14 10x50

1...24-29 2. 34x23 17-22 3. 28x17 14-19 4. 23x14 26-31 5. 36x27 13-19 6. 14x23 4-10 7. 25x14 10x50

Are all winning

lidraughts.org/training/655

16x27 2. 37x26 12-18 3. 23x32 14-19 4. 28x17 19x48 is also winning

You're right. It is also winning. But the question was not wether white is winning. They are just looking for the best move!