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Chess Mate-in-One is not the snap it used to be for anyone. At least not in arcane field off-the-beaten-path of newly-invented pieces. For starters,
the solver must know the game in question. Are you now, or ever been,
member of the CVPage? Or anonymously party to it? Scads of new pieces
occurring obviate purported triviality of classic 'Mate-in-One'. No
'gimme' now the half-metre putts on the hills. No mere glancing off the
board gives away solution automatically. Ask first how active pieces move
and what the ground rules are. Being sceptical of solution (once arrived
at) means retesting its initial consistency and contradictions. The more
sophisticated the puzzles, the more potential counterindications, as
exotics (and exotic Rules) interact. Some boards or piece-mixes frankly
require computers by intricate Mate-in-Two level, without evident
solution, so leave the experts those. Moreover, by innovative nature,
Fairy Chess Mates-in-One, -Two, -Three may have unanticipated dual
solutions and even 'Cooks'. Specific problems follow separately Commented.