http://en.lichess.org/training/43539
Rxg7 also leads to mate (in 11 instead of the best solution in 3). Shouldn't it let you try again the puzzle as it's a good option, but you can do better ?
Rxg7 also leads to mate (in 11 instead of the best solution in 3). Shouldn't it let you try again the puzzle as it's a good option, but you can do better ?