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In positions with few pieces and a forced mate, Casanchess sometimes goes to very high depths, which in itself is not a problem. However, doing this causes the following assert to fail:

casanchess: /file-path/casanchess/src/Heuristics.cpp:108: void {anonymous}::RateMoves(Board&, MoveList&, TT&, const Heuristics&, int): Assertion `historyScore >= minScore && historyScore <= maxScore' failed.

With a little testing, historyScore fails the first half of the assert by being negative, either due to overflow or some other oversight.
Here are a couple of positions this triggers in, both of which occurred in test 1 min + 1 sec games (these also fail the assert with go depth 70, although it triggers at earlier depths than that).

• +M9 for side to move: 8/3B2k1/6P1/5PK1/1p6/1P5p/8/8 w - - 0 49
• -M6 for side to move: 8/8/6k1/r7/3p4/6K1/8/1q6 w - - 0 102