rn3bn1/p1pp1p1r/1p2k2p/3N2p1/q1P1p1P1/RPB2P1P/3PP1B1/3QK1NR b K - 1 15
FEN state: rn3bn1/p1pp1p1r/1p2k2p/3N2p1/q1P1p1P1/RPB2P1P/3PP1B1/3QK1NR b K - 1 15 ; Best move: a4a3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black rook at h7. Black pawn at b6, black king at e6 and black pawn at h6. White knight at d5 and black pawn at g5. Black queen at a4, white pawn at c4, black pawn at e4 and white pawn at g4. White rook at a3, white pawn at b3, white bishop at c3, white pawn at f3 and white pawn at h3. White pawn at d2, white pawn at e2 and white bishop at g2. White queen at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 15. Black to move.