4 steps
Step 1:go to this panel place
http://girlbtc.com/trade/onevsone/
Step 2:go to the third part site or using your app to hash your original info and open 
we recomment two third part hash site
1.
http://www.xorbin.com/tools/sha256-hash-calculator2.
http://www.freeformatter.com/sha256-generator.htmlchoose the first one for example, change your username(not necessary), amount(must),animal(must), and then paste and generate SHA256
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you can see clearly on the above example,
admin open 0.005btc with elephant, 423231 is hashed and get
3b938903906d6e54b864a120a6a160afeceb0834f1af6c9aa0eab78d06cb84fathe sentence "
admin open 0.005btc with elephant, 423231 " is the original info of your onevsone, it is very important, copy and paste it somewhere where only you knows.
and paste the
3b938903906d6e54b864a120a6a160afeceb0834f1af6c9aa0eab78d06cb84fa to the self hash panel
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ok now you press the open button
Step 3:I challenge myself in this example 
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I choose tiger and challenged my self . of course in real game this should be challenged by others.
Step 4:upload the original info 
admin open 0.005btc with elephant, 423231 is upload
and we get the result admin vs admin , elephant vs tiger and the winner is admin
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