A clean strike: Rosie's bishop topples the pawn on A3.

From the dark, Rat pushes the king to F7. From A3 to C5, Rosie's bishop swallows Rat's pawn.

Rat answers by moving the pawn from G6 to G5. A clean strike: Rosie's bishop topples the pawn on E7.

With dungeon cunning, Rat brings the pawn to G4. With a steady hand, Rosie brings the bishop to G5, and rat's king advances from F7 to G7.

Rosie advances the bishop from G5 to D8, while rat sets the king on H8, watching every square. From D8 to C7, Rosie's bishop swallows Rat's pawn.

From the dark, Rat pushes the pawn to D5. A clean strike: Rosie's bishop topples the pawn on A5.

Rat answers by moving the pawn from G4 to G3. From H2 to G3, Rosie's pawn swallows Rat's pawn.

With dungeon cunning, Rat brings the king to G8. With a steady hand, Rosie brings the bishop to B6, while rat's pawn advances from D5 to D4.

From B6 to D4, Rosie's bishop swallows Rat's pawn.

Rat sets the king on H7, watching every square; then without hurry or fear, Rosie places the bishop on H8. From the dark, Rat pushes the king to G6, and right after that rosie's bishop takes A1, leaving H8 behind.

Rat answers by moving the king from G6 to F5; then rosie slides the bishop across the board, from A1 to G7. With dungeon cunning, Rat brings the king to E4.

With a steady hand, Rosie brings the bishop to C3, and rat's pawn advances from C6 to C5. Rosie advances the bishop from C3 to F6, while rat sets the king on D3, watching every square.

Without hurry or fear, Rosie places the bishop on E7. From the dark, Rat pushes the king to E4.

A clean strike: Rosie's bishop topples the pawn on C5.

Rat answers by moving the king from E4 to D3, and right after that rosie slides the pawn across the board, from G3 to G4. With dungeon cunning, Rat brings the king to E4.

With a steady hand, Rosie brings the pawn to G5, while rat's king advances from E4 to F3. Rosie advances the pawn from G5 to G6, and rat sets the king on F4, watching every square.

Without hurry or fear, Rosie places the pawn on G7. From the dark, Rat pushes the king to E5, and right after that rosie's bishop takes A7, leaving C5 behind.

Rat answers by moving the king from E5 to E6. Promotion: on G8, Rosie turns a pawn into a queen.

With dungeon cunning, Rat brings the king to E5. From G7, Rosie's queen forces Rat to defend.

Rat's king advances from E5 to E6. Check: Rosie tightens the net by bringing the queen to G8.

Rat sets the king on E7, watching every square, and right after that without hurry or fear, Rosie places the queen on C4. From the dark, Rat pushes the king to F8; then rosie's pawn takes D4, leaving D2 behind.

Rat answers by moving the king from F8 to G7, and right after that rosie slides the pawn across the board, from D4 to D5. With dungeon cunning, Rat brings the king to F8.

With a steady hand, Rosie brings the pawn to D6, while rat's king advances from F8 to E8. Rosie advances the queen from C4 to C7, and rat sets the king on F8, watching every square.

Check: Rosie tightens the net by bringing the queen to E7.

From the dark, Rat pushes the king to G8, and right after that rosie's pawn takes D7, leaving D6 behind. Rat answers by moving the king from G8 to H8.

Mate. Rosie's queen on D8 leaves Rat with no escape.