1rbq4/p2pkpbr/1pp1np2/7p/1P6/2P2P1P/P2PP3/RNB1KB1R w KQ - 0 18
FEN state: 1rbq4/p2pkpbr/1pp1np2/7p/1P6/2P2P1P/P2PP3/RNB1KB1R w KQ - 0 18 ; Best move: b4b5
The current state of the chess board is: Black rook at b8, black bishop at c8 and black queen at d8. Black pawn at a7, black pawn at d7, black king at e7, black pawn at f7, black bishop at g7 and black rook at h7. Black pawn at b6, black pawn at c6, black knight at e6 and black pawn at f6. Black pawn at h5. White pawn at b4. White pawn at c3, white pawn at f3 and white pawn at h3. White pawn at a2, white pawn at d2 and white pawn at e2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 18. White to move.