

Example: 1v1
P1 | P2
-----------------------------------
Start: 1-1 | 1-1
P1's turn: 0-2 | 1-1 (1-1 => 0-2)
P2's turn: 0-3 | 1-1 (2 + 1 => 3)
P1's turn: 2-1 | 1-1 (0-3 => 2-1)
P2's turn: 2-1 | 0-2 (1-1 => 0-2)
P1's turn: 2-1 | 0-4 (2 + 2 => 4)
P2's turn: 2-1 | 2-2 (0-4 => 2-2)
P1's turn: 2-1 | 4-2 (2 + 2 => 4)
P2's turn: 2-1 | 3-3 (4-2 => 3-3)
P1's turn: 2-1 | 0-3 (3 + 2 => 5) (* blunder; guaranteed win for P2 *)
P2's turn: 0-1 | 0-3 (2 + 3 => 5)
P1's turn: 0-1 | 0-4 (3 + 1 => 4)
P2's turn: 0-0 | 0-4 (1 + 4 => 5) (* P2 wins *)
• Other variations: