1rb1kb1r/2pp2pq/p1n5/4pNPp/1P6/P2PP3/1BPK2PP/R3QBNR w k - 0 18
FEN state: 1rb1kb1r/2pp2pq/p1n5/4pNPp/1P6/P2PP3/1BPK2PP/R3QBNR w k - 0 18 ; Best move: e3e4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at g7 and black queen at h7. Black pawn at a6 and black knight at c6. Black pawn at e5, white knight at f5, white pawn at g5 and black pawn at h5. White pawn at b4. White pawn at a3, white pawn at d3 and white pawn at e3. White bishop at b2, white pawn at c2, white king at d2, white pawn at g2 and white pawn at h2. White rook at a1, white queen at e1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 18. White to move.