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After 1... Nf6 2. Bf6 Qf6 3. Qd5 Re4 4. Qe4 Qe4 5. f3 ... the official solution deems 5... Qd3 6. Be4 as the best continuation. But all of the following lead to a forced mate: 5... Qf3 6. Re2 Qe2 5...…

In http://en.lichess.org/training/57194 after 1. Ke3 Nd7 2. Qg8, black's best response is shown to be 2. .. Rb8, but 2. .. Kc7 is much better, with no easy win for white following. Stockfish plays the…

Another puzzle http://en.lichess.org/training/34569: 1. .. Ra3+ is rejected, while the accepted solution is 1. .. Rb1+ 2. Kxb1 Ba2+ 3. Ka1 Nb3#. But, after 1. .. Ra3+ all the rest works verbatim! Why …

But the point is about the best move, and in puzzles if there is a win in 4 moves and there is a win in 3 moves, the latter line is preferred. Therefore, the numerical (heuristic) evaluation given by …

@OneOfTheQ, #11, 1) -- Whatever that +12 means to you, after 3.f4, 3. .. Qc3 and 3. .. Qf6 are *not* equally good. The line given in the puzzle solution after 3. .. Qc3 leaves both the sides with one …

See another puzzle : http/en.lichess.org/training/31997. After 1. Be5 Rb2 2. Ka1 Qe5 3. c4, the official solution gives 3 .. Qc3 and rejects 3 .. Qf6, but the latter is *clearly* better, allowing blac…

All this discussion definitely shows that that particular puzzle is puzzling and hence does not so much teach beginners as it confuses them. Let us ananalyse it more before we give a solution to it. T…

The link to that puzzle is here: http://en.lichess.org/training/3300

The "official" Lichess solution gives 1. ... Rca7 2. c4 but what if 2. g5? In fact after 2. g5 black seems hardpressed for initiative. Many Lichess puzzles leave me puzzled because of such ignored lin…