R1VER
by Thomas Ou
rollouts0
obs/sec0
section§ 01
hero
shape
space
explorer
strategy
R1VER | a solver you can watch think

The river
is computed.

Every hand, every street, every decision. Two thousand clusters, one hundred thousand rollouts, the entire game in abstraction space.

R1VER | case 0047 · flop
AK
VS
7 8♣ 2♠
R1VER | the verdict
0.0%
Win Probability · 100,000 Runouts
scroll to observe
R1VER | The Shape of Equity

A cluster is not a number.
It is a shape.

Eighteen hundred observations share this hand's equity distribution. Most hover near the median. A thin left tail punishes the unfortunate runouts; a fat right tail rewards the dominant ones. The solver sees the whole curve, not the average.

AK · 58.3%
0%25%50%75%100%
Median
54.2%
Your hand
58.3%
Peak
72.1%
0/2000
abstraction space · 2,000 clustersF.1247 · you are here
R1VER | Abstraction Space

Two thousand archetypes.
One coordinate per hand.

Every possible hand reduces to a point in thirty-two dimensions, partitioned into two thousand clusters by equity distribution. Hands that live in the same cluster play the same way. The solver memorizes the archetype, not the hand.

Pick a hand. Watch it compute.

Select two cards for your pocket, then three for the flop. The solver reveals equity, cluster membership, and the five nearest neighbors in abstraction space.

Card Selector0/2 pocket · 0/3 board
A
K
Q
J
T
9
8
7
6
5
4
3
2
Live Solveidle
pocket + flop
Win Probability
Cluster
Distance σ
Population
Density

The solver's blueprint.

Move through the streets. See the GTO action distribution for each decision point. This is not a recommendation. This is equilibrium.

Preflop
3-bet pot · BB vs BTN
A♠K
Flop
· decision point ·
7 8♣ 2♠
Turn
pending
River
pending

Flop decision

STREET 2 · FLOP DECISION
Board
7 8♣ 2♠
Pot
9.0 BB
Facing
Check
Raise 12
42%
Call
32%
Raise 6
17%
Fold
6%
Shove
3%
Top EV · VerdictRaise 12 BB
R1VER | Begin

Ask the river.

Full Explorer and Strategy viewer at production scale.