The quote suggests that a significant phase or strategy is coming to an end, much like a game of chess nearing its conclusion. The phrase "the board is clearing" indicates that many of the previous moves and pieces have been eliminated or are no longer relevant, signaling a transition or final stage in the process.

It also reflects a sense of closure or a nearing finish, where the "old game" is almost over and the critical pieces have been broken or lost. Overall, it conveys a moment of change, resolution, or the final moves in a strategic situation, as described in Dorothy Dunnett's "Checkmate."