The black queen is attacked by the rook on e1. What should black play?

Black can ignore the attack on his queen because white has a back rank problem, therefore:

27. … Txb3! 28. axb3 Rd1 This is now possible because the bishop is eliminated!

29. Te4 Df1+ 30. Rxf1 Rxf1#

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Source: 1001 Chess Exercises for Club Players door Frank Erwich (New In Chess) (New In Chess).