From G1 to H3, Felipe U.'s knight swallows Alpha Bat's pawn.

Alpha Bat's bishop reaches D2 and threatens Felipe U.'s king.

Felipe U.'s king takes F2, leaving E1 behind. Check from Alpha Bat: the bishop plants itself on E1.

From F2 to E1, Felipe U.'s king swallows Alpha Bat's bishop.

With dungeon cunning, Alpha Bat brings the pawn to E6. Check: Felipe U. tightens the net by bringing the rook to A8.

Alpha Bat's king advances from E8 to E7. Felipe U. advances the knight from H3 to G5, and alpha Bat sets the knight on G6, watching every square.

A clean strike: Felipe U.'s knight topples the pawn on F7.

From the dark, Alpha Bat pushes the knight to H8, and right after that felipe U.'s pawn takes H4, leaving H2 behind. Alpha Bat answers by moving the rook from D3 to F3; then felipe U. slides the pawn across the board, from H4 to H5.

With dungeon cunning, Alpha Bat brings the bishop to C5. With a steady hand, Felipe U. brings the pawn to H6, and alpha Bat's bishop advances from C5 to A7.

A clean strike: Felipe U.'s knight topples the knight on H8.

Alpha Bat sets the rook on F4, watching every square. Felipe U. gives check with the knight on G6.

From the dark, Alpha Bat pushes the king to F6; then felipe U.'s pawn takes H7, leaving H6 behind. Alpha Bat answers by moving the rook from F4 to F3.

Promotion: on H8, Felipe U. turns a pawn into a queen.

With dungeon cunning, Alpha Bat brings the king to G5. A clean strike: Felipe U.'s rook topples the bishop on A7.

Alpha Bat's rook advances from F3 to G3. From H4, Felipe U.'s queen forces Alpha Bat to defend.

Alpha Bat moves the king from G5 to G6 and topples Felipe U.'s knight.

Without hurry or fear, Felipe U. places the rook on A8. From the dark, Alpha Bat pushes the pawn to E5. Felipe U. gives check with the rook on G8.

Alpha Bat answers by moving the king from G6 to F7; then felipe U. slides the rook across the board, from G8 to H8. With dungeon cunning, Alpha Bat brings the rook to F3.

With a steady hand, Felipe U. brings the queen to H6, and alpha Bat's rook advances from F3 to B3. Felipe U. gives check with the rook on H7.

Alpha Bat sets the king on E8, watching every square, and right after that without hurry or fear, Felipe U. places the queen on G7. From the dark, Alpha Bat pushes the pawn to F4.

Felipe U. delivers the final mate from G8.