1rb1k1nr/p1qpp3/2p3p1/1pP4p/1P1P1p2/Nn1QPP2/P1K3PR/R1B1bBN1 w k - 2 17
FEN state: 1rb1k1nr/p1qpp3/2p3p1/1pP4p/1P1P1p2/Nn1QPP2/P1K3PR/R1B1bBN1 w k - 2 17 ; Best move: a2b3
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at c7, black pawn at d7 and black pawn at e7. Black pawn at c6 and black pawn at g6. Black pawn at b5, white pawn at c5 and black pawn at h5. White pawn at b4, white pawn at d4 and black pawn at f4. White knight at a3, black knight at b3, white queen at d3, white pawn at e3 and white pawn at f3. White pawn at a2, white king at c2, white pawn at g2 and white rook at h2. White rook at a1, white bishop at c1, black bishop at e1, white bishop at f1 and white knight at g1. Black kingside is the only castle move available. Half move number is 2. Full move number is 17. White to move.