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You wouldn't WANTwant to place the rook in front of the queen at b4. Because it can be captured by the pawn on a5.

As it wereEven if you do want to, you CAN'Tcan't move the rook in front of the queen (or anywhere else), because it is pinned to your king by the queen.

It's fortunate that Rb4Rb4 was an illegal move, because it would have been a big mistake.

You should, instead, move the king to e3, unpinning it, and bringing it closer to your pawspawns.

You wouldn't WANT to place the rook in front of the queen at b4. Because it can be captured by the pawn on a5.

As it were, you CAN'T move the rook in front of the queen (or anywhere else), because it is pinned to your king by the queen.

It's fortunate that Rb4 was an illegal move, because it would have been a big mistake.

You should, instead, move the king to e3, unpinning it, and closer to your paws.

You wouldn't want to place the rook in front of the queen at b4. Because it can be captured by the pawn on a5.

Even if you do want to, you can't move the rook in front of the queen (or anywhere else), because it is pinned to your king by the queen.

It's fortunate that Rb4 was an illegal move, because it would have been a big mistake.

You should, instead, move the king to e3, unpinning it, and bringing it closer to your pawns.

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You wouldn't WANT to place the rook in front of the queen at b4. Because it can be captured by the pawn on a5.

As it were, you CAN'T move the rook in front of the queen (or anywhere else), because it is pinned to your king by the queen.

It's fortunate that Rb4 was an illegal move, because it would have been a big mistake.

You should, instead, move the king to e3, unpinning it, and closer to your paws.