SB call vs MP open range quiz

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SB call vs MP open range quiz

Blinds: $5.00/$10.00 (6 Players) BN: BTN: $1000.00
SB: SB: $1000.00 (Hero)
BB: BB: $1000.00
UTG: UTG: $1000.00
MP: MP: $1000.00
CO: CO: $1000.00
Hey guys, I have a range quiz for you.

Assume MP to be solid reg, opening into a fairly tough table from CO, BN also solid. SB is hero in this example. This isn't about my player reads, so make your own choice for what ranges players show up with.
Preflop ($15.00) SB is SB with J J K A
UTG folds, MP raises to $30.00, CO folds, BTN calls $30.00, SB calls $25.00, BB folds
Hero could squeeze here but decides in this hand example to call. Not really pushing equity vs MP, and we're assuming BN flats some hands to back raise. I'm happy to hear if anyone disagrees (and we can make the SB vs MP squeeze quiz), but let's assume for now that the preflop play was to call.

Actually, not pushing equity is not strictly true. This hand most likely is pushing some equity vs range, but SB also ends up playing OOP in what's possibly a 3-way sq pot. If you do think it's a snap squeeze at 100 bb stacks, then there's probably some stack depth where that stops being the case. So share that stack depth in that case.
Flop ($100.00) 4 6 5
SB checks, MP bets $50.00, BTN folds, SB calls $50.00
MP doesn't hit this board super well, but neither does anyone else. But there are some hands that want to bet. I could imagine some different strategies here, but in this hand example MP bets half pot with some betting range. BN folds and hero calls.
Turn ($200.00) 4 6 5 J
SB checks, MP bets $100.00, SB
Turn card is the very interesting Js. It's not an entire range blank, but it doesn't connect with the rest of the board. It's far from a blank card for hero's hand though. MP bets half pot again. Again we could imagine some different betting strategies. A half pot bet should make sense with *some* part of MP's range, possibly with all of it. Part of this quiz is to figure this out.

Quiz Instructions

This is a semi-fictional hand example based on a real hand, but modified a little to make it an interesting quiz. It's an example constructed for my range construction course, but I thought it would be interesting to have inputs from a wider audience. I hope you guys will find it stimulating, I do believe many decisions are quite marginal. I've already run a range construction kit on this spot, and I can perhaps post some results later if anyone finds it interesting. But first I'd like to present this as a range quiz, and see what others have to say about it.

Preflop ranges aren't the most interesting here. I've left it open to your own judgement to decide on what ranges players take to the flop. Assume a table of good solid regulars at the 5/10 level. Postflop is where the fun begins. BN ends up folding the flop, which you may or may not decide to be relevant. It's certainly relevant in that it influences MP's betting range. Possibly also SB's calling range (you decide). There should also be some subtle range vs range blocker effects, but I don't know if we need to go to that level of detail here. On another board texture the effects would be different, naturally.

So, here are the quiz questions:

  1. Who's range hits this board best? Who has the average equity advantage? Who has the range distribution advantage?
  2. At what percentile of SB's flop starting range is the actual hand?
  3. Define SB's flop leading range (if any).
  4. Define MP's flop betting, check-calling, check-raising and check-folding ranges.
  5. Define SB's flop check-calling, check-raising and check-folding ranges.
  6. At what percentile of SB's turn starting range is the actual hand?
  7. Define SB's turn leading range (if any).
  8. Define MP's betting and checking ranges.
  9. Define SB's check-calling, check-raising and check-folding ranges.
  10. Would you change any of the bet or raise sizes in any spot?
  11. Should any player have multiple bet or raise sizes in any spot?
  12. What is SB's best action on the turn with the actual hand?
  13. How would ranges be modified to exploit other types of players?

I think that's a start. Do note that this is mostly a range exercise. There is an actual hand which makes things quite interesting I think, but it's also not the main focus here. Feel free to address only the questions that appeal to you. Or invent your own and answer those.

Estimated time to complete: 30-60 minutes.

Enjoy!

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