A lost endgame

White to play here and complete the victory...

Yes, this is blitz, and I had already accepted that this was a loss after an interesting middlegame where I had gained the upper-hand  and 2 pawns, but had about 10 seconds left against White's 3+ minutes ( time is my biggest issue in blitz !).

Knowing the time for a slow victory was passed I had sacrificed Bishop for 2 pawns, but it was not a sound play !

However, with two active Rooks I played on and saw White switch from stopping my Rook attacks to throwing in a couple of checks : he began to change focus from stopping me, to winning himself.

Here we are, with Black giving up another pawn ( via Kxa6)  to put the Rooks on the same file .

In fact, here there is only one move that wins for White, although I didn't know it or have the time to plan further than my next move.

My opponent didn't play it, we carried on with Black checking and the White king moving, then 4 moves later White resigned before the mate arrived.

A significant lesson !

White to play and win after 47..Rcb7