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We investigate the microlensing data collected during the 2017--2019 seasonsin the peripheral Galactic bulge fields with the aim of finding planetarysignals in microlensing light curves observed with relatively sparse coverage.We first sort out lensing events with weak short-term anomalies in the lensinglight curves from the visual inspection of all non-prime-field events, and thentest various interpretations of the anomalies. From this procedure, we find twopreviously unidentified candidate planetary lensing events KMT-2017-BLG-0673and KMT-2019-BLG-0414. It is found that the planetary signal ofKMT-2017-BLG-0673 was produced by the source crossing over a planet-inducedcaustic, but it was previously missed because of the sparse coverage of thesignal. On the other hand, the possibly planetary signal of KMT-2019-BLG-0414was generated without caustic crossing, and it was previously missed due to theweakness of the signal. We identify a unique planetary solution forKMT-2017-BLG-0673. However, for KMT-2019-BLG-0414, we identify two pairs ofplanetary solutions, for each of which there are two solutions caused by theclose-wide degeneracy, and a slightly less favored binary-source solution, inwhich a single lens mass gravitationally magnified a rapidly orbiting binarysource with a faint companion (xallarap). From Bayesian analyses, it isestimated that the planet KMT-2017-BLG-0673Lb has a mass of$3.7^{+2.2}_{-2.1}~M_{\rm J}$, and it is orbiting a late K-type host star witha mass of $0.63^{+0.37}_{-0.35}~M_\odot$. Under the planetary interpretation ofKMT-2010-BLG-0414L, a star with a mass of $0.74^{+0.43}_{-0.38}~M_\odot$ hostsa planet with a mass of $\sim 3.2$--3.6~$M_{\rm J}$ depending on the solution.We discuss the possible resolution of the planet-xallarap degeneracy ofKMT-2019-BLG-0414 by future adaptive-optics observations on 30~m classtelescopes.

KMT-2017-BLG-0673Lb and KMT-2019-BLG-0414Lb: Two microlensing planets detected in peripheral fields of KMTNet survey