Dos verdades y un error
- Pruebas y comprobación
- Ages 8 to 14
- About 6 minutes
The story behind it
Mir Sultan Khan arrived in England in 1929 unable to read the chess books everyone else studied. He trusted what he could see on the board in front of him — and became British champion. This game asks for the same habit: do not believe a sentence until you have checked it against the board.
Read the full story: The champion who trusted his eyes →How to play
- Read all three statements.
- Check each one against the board.
- Tap the one that is false.
Levels
For teachers and coaches
Two truths and a blunder — Evidence and checking
Ages 8 to 14 · about 6 minutes · 8by8verse Chess Lab
What it teaches
Testing a claim against evidence instead of accepting it.
The story to tell first
Mir Sultan Khan arrived in England in 1929 unable to read the chess books everyone else studied. He trusted what he could see on the board in front of him — and became British champion. This game asks for the same habit: do not believe a sentence until you have checked it against the board.
Three questions to ask
- How did you check that statement — what exactly did you look at?
- Which statement was easiest to believe without checking? Why?
- Can you write a false statement about this board that sounds true?
Without a screen
Each pupil writes two true sentences and one false one about a picture or a graph. The class finds the false one and says how they know.
Siguiente
Finish
Hint
Step back
Start again
Play again
Next level
Back to the lab
Right.
Not quite.
Not yet — have another go.
Question {n} of {total}
{right} out of {total} right.
Three stars. Clean work.
Two stars. Well played.
One star. Level done.
king
queen
rook
bishop
knight
pawn
Two of these are true. Tap the one that is false.
the white {piece} on {sq}
the black {piece} on {sq}
{x} stands on a dark square.
{x} stands on a light square.
{sq} is a dark square.
{sq} is a light square.
There are {n} pieces on the board.
White has {n} pieces on the board.
Count them: {n}.
White’s pieces are worth more points than Black’s.
Black’s pieces are worth more points than White’s.
Both sides have the same number of points.
White has {a} points, Black has {b}. Kings are not counted.
{x} attacks {y}.
It cannot reach {sq}.
{x} can move to {sq}.
{sq} is not on its path.
The black king is in check.
The black king is not in check.
It is: {x} attacks the king.
No white piece reaches the king.