In the Daily Chess Analysis board, promoting to a new piece, where the original move in the variation is the same pawn move to the eighth rank, with a different resulting piece promotion, does not result in the creation of a new variation, and plays the original move in the variation.
Browser: Google Chrome
OS: Windows 10
Device: Desktop Computer
Procedure:
Step 1: Open Daily Chess and select an 'active' or in progress game.
Step 2: Open the analysis board.
Step 3: Make moves in order to achieve a position with Black to move and promote a pawn to any piece legally.
Step 4: Play the pawn to promote and click the 'Knight' option.
Step 5: Press the left arrow key in order to go back one 'ply'.
Step 6: Play the pawn to promote and click the 'Queen' option.
This procedure results in a promotion to a knight instead of a queen on the second attempt, thus failing to create a new variation.
Demonstration:
Go into an active Daily Chess game and open the analysis board.
Reach a position with a legal pawn promotion to any piece the immediate next move.
Played 49. d1=N.
Moved back one ply.
Moved the pawn to the d1 square and clicking the 'Queen' option.
The move 49. d1=N?! is again executed and a new variation beginning with d1=Q! is not created.
Suggested solution:
Program a rule in the analysis board to check for a different input for pawn promotion and create a new variation with the new move if the rule fires.
Thank you to the Chess.com Beta Team for reading this bug report.
UPDATE: I tested this procedure on the Analysis board under the 'Learn' tab and the bug does not appear to occur. It only occurs with active Daily Chess games.
In the Daily Chess Analysis board, promoting to a new piece, where the original move in the variation is the same pawn move to the eighth rank, with a different resulting piece promotion, does not result in the creation of a new variation, and plays the original move in the variation.
Browser: Google Chrome
OS: Windows 10
Device: Desktop Computer
Procedure:
Step 1: Open Daily Chess and select an 'active' or in progress game.
Step 2: Open the analysis board.
Step 3: Make moves in order to achieve a position with Black to move and promote a pawn to any piece legally.
Step 4: Play the pawn to promote and click the 'Knight' option.
Step 5: Press the left arrow key in order to go back one 'ply'.
Step 6: Play the pawn to promote and click the 'Queen' option.
This procedure results in a promotion to a knight instead of a queen on the second attempt, thus failing to create a new variation.
Demonstration:
Go into an active Daily Chess game and open the analysis board.
Reach a position with a legal pawn promotion to any piece the immediate next move.
Played 49. d1=N.
Moved back one ply.
Moved the pawn to the d1 square and clicking the 'Queen' option.
The move 49. d1=N?! is again executed and a new variation beginning with d1=Q! is not created.
Suggested solution:
Program a rule in the analysis board to check for a different input for pawn promotion and create a new variation with the new move if the rule fires.
Thank you to the Chess.com Beta Team for reading this bug report.
UPDATE: I tested this procedure on the Analysis board under the 'Learn' tab and the bug does not appear to occur. It only occurs with active Daily Chess games.