r1bq1b2/ppppk3/5nr1/4p3/1n2P3/1PP4N/PN1P1P1P/1RB1K2R b K - 0 18
FEN state: r1bq1b2/ppppk3/5nr1/4p3/1n2P3/1PP4N/PN1P1P1P/1RB1K2R b K - 0 18 ; Best move: d7d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black bishop at f8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7 and black king at e7. Black knight at f6 and black rook at g6. Black pawn at e5. Black knight at b4 and white pawn at e4. White pawn at b3, white pawn at c3 and white knight at h3. White pawn at a2, white knight at b2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.