And for wise guys who simply say that chess game is just a large tactics puzzle... If you don't know that's not what I'm looking for, then I'm tell you explicitly here.
I've played something similar to what I'm looking for in Majestic Chess, but its tactic puzzles are a bit too easy for me now. I.e. in Majestic Chess, it'd go over some tactic dealing with fork/pin/whatever, then it plays a game (boss stage) where that tactics very likely gets setup by the computer.
I'm looking for your help to find a computer chess program that purposely blunders such that the human player must carry out some combination to fully capitalize on the blunder. I.e. not obvious blunders but more like chess.com tactical puzzle type blunder.
Instead of chess.com tactics puzzles which starts are some pre-defined board position, I'd like to play a chess game where tactical opportunities like those tactics puzzles are randomly put it.
Whether the human player notices or misses the blunder, another one should be thrown in later during the game, i.e. keeping the human on his/her toes (more preferred). OR the computer can just end the game there and tell the human that a tactic was missed (less preferred).
Basically, I want it to train me to spot tactical opportunities during a game. When playing against humans, we see these situations where a blunder isn't immediately obvious but can be either quickly exploited with a combination or exploited for long-term positional advantage.
Additional features would be configurable difficulty and types of the tactical-puzzle blunders.
Of course, all blunders put in by the computer during the game should be able to be reviewed (i.e. here on chess.com, when I can't solve a tactics puzzle, I can ask for the solution).
TIA.