rnbq1r2/p3nkpp/2pppp2/1p2N3/P1P1P2P/1P4P1/N2P1P2/R1BQKB1R b Q - 0 13
FEN state: rnbq1r2/p3nkpp/2pppp2/1p2N3/P1P1P2P/1P4P1/N2P1P2/R1BQKB1R b Q - 0 13 ; Best move: d6e5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8 and black rook at f8. Black pawn at a7, black knight at e7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at c6, black pawn at d6, black pawn at e6 and black pawn at f6. Black pawn at b5 and white knight at e5. White pawn at a4, white pawn at c4, white pawn at e4 and white pawn at h4. White pawn at b3 and white pawn at g3. White knight at a2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.