r1bk1bnr/pp1p2p1/5p2/2pN3p/6P1/nP1Pq2P/P1P1PP2/R2QKBR1 b Q - 0 15
FEN state: r1bk1bnr/pp1p2p1/5p2/2pN3p/6P1/nP1Pq2P/P1P1PP2/R2QKBR1 b Q - 0 15 ; Best move: e3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at d8, black bishop 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 g7. Black pawn at f6. Black pawn at c5, white knight at d5 and black pawn at h5. White pawn at g4. Black knight at a3, white pawn at b3, white pawn at d3, black queen at e3 and white pawn at h3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.