rnb2knr/pp1p1p2/2p2q2/6pp/1P2p3/1P1P4/P1NBPPPP/1R1QKBNR b K - 0 10
FEN state: rnb2knr/pp1p1p2/2p2q2/6pp/1P2p3/1P1P4/P1NBPPPP/1R1QKBNR b K - 0 10 ; Best move: d7d5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at f7. Black pawn at c6 and black queen at f6. Black pawn at g5 and black pawn at h5. White pawn at b4 and black pawn at e4. White pawn at b3 and white pawn at d3. White pawn at a2, white knight at c2, white bishop at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 10. Black to move.