rnbqk2r/2pp1npp/pp1b4/1P2pp2/4N3/2N5/P1PPPPPP/1RBQKB1R w Kkq - 4 10
FEN state: rnbqk2r/2pp1npp/pp1b4/1P2pp2/4N3/2N5/P1PPPPPP/1RBQKB1R w Kkq - 4 10 ; Best move: e4d6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at c7, black pawn at d7, black knight at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at b6 and black bishop at d6. White pawn at b5, black pawn at e5 and black pawn at f5. White knight at e4. White knight at c3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 4. Full move number is 10. White to move.