# Question about MDF on the river and solvers approach to this. ( nl50 hand )

Hello,

I want to ask a question about MDF on River and PokerSnowie's advice in a certain spot.

I played this hand:

[b]PokerStars - \$0.50 NL (6 max) - Holdem - 6 players[/b]
[i][url=http://www.pokertracker.com]Hand converted by PokerTracker 4[/url][/i]

UTG: 247.68 BB
MP: 189.04 BB
[b]Hero (CO): 187.14 BB[/b]
BTN: 108.2 BB
SB: 102.74 BB
BB: 166.16 BB

SB posts SB 0.5 BB, BB posts BB 1 BB

[b]Pre Flop:[/b] [i](pot: 1.5 BB)[/i] [b]Hero[/b] has J:diamond: J:heart:

[color=red]UTG raises to 3 BB[/color], [i]fold[/i], [b]Hero[/b] calls 3 BB, [i]fold[/i], [color=red]SB raises to 15 BB[/color], [i]fold[/i], [i]fold[/i], [b]Hero[/b] calls 12 BB

[b]Flop:[/b] [i](34 BB, 2 players)[/i] 3:club: 6:club: Q:heart:
[color=red]SB bets 10.66 BB[/color], [b]Hero[/b] calls 10.66 BB

[b]Turn:[/b] [i](55.32 BB, 2 players)[/i] 6:spade:
SB checks, [b]Hero[/b] checks

[b]River:[/b] [i](55.32 BB, 2 players)[/i] 2:heart:
[color=red]SB bets 77.08 BB and is all-in[/color], [i]fold[/i]

SB wins 52.56 BB

So in this spot, our MDF is 58,2%.
PokerSnowie range is: JJ, TT and 64% of AQs.
And something I cannot understand is: PokerSnowie is folding here everything, but AQs.

12 combos of JJ-TT - fold. ( calling with JJ would be -35bb EV according to PokerSnowie )
2,64 combos of AQs - call.

So we are calling only 18% of our range instead of 58,2%.

I wonder why is that? Maybe because it is a river and Snowie doesn't know what it is doing? Or this is the correct play? But hard to imagine that this is correct since the villain can just make a shove with the whole range 100% of the time and showing big profit in this spot.
So, in GTO can we call less than MDF on the river and that's OK?