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Calculate probabilites of a battle for an individual territory or a conquest of multiple territories for the board game Gambit. You can also play Gambit on GamesByEmail.com.

GamesByEmail.com's RISK Battle Odds Calculator
Attackers: 
(One less than in territory)
Defenders: 
Separate multiple territories with commas
Calculator Results
Attacker Odds (%)   Defender Odds (%)
Exactly
This Number
Survive
At Least
This Number
Survive
Number Of
Surviving
Armies
At Least
This Number
Survive
Exactly
This Number
Survive
Territory
Defeated

Basic Battle Odds
Number Of
Attackers
Number Of
Defenders
Number
Of Rolls
Attacker
Wins All
SplitDefender
Wins All
3277762890
37.17%
2611
33.58%
2275
29.26%
311296855
65.97%
 441
34.03%
221296295
22.76%
420
32.41%
581
44.83%
21216125
57.87%
 91
42.13%
1221655
25.46%
 161
74.54%
113615
41.67%
 21
58.33%

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