Pay for depth.
Not for seats.
No subscription. No locked features. You buy credits, and credits buy Stockfish nodes and bot games. Analysis you have already paid for stays cached.
- 50,000 position checks at 10 MN
- 5000 upload slots
- Credits never expire
- 100,000 position checks at 10 MN
- 10000 upload slots
- Credits never expire
- 160,000 position checks at 10 MN
- 16000 upload slots
- Credits never expire
- 250,000 position checks at 10 MN
- 25000 upload slots
- Credits never expire
- 500,000 position checks at 10 MN
- 50000 upload slots
- Credits never expire
- 1,000,000 position checks at 10 MN
- 100000 upload slots
- Credits never expire
How deep can you go?
At 200 million nodes per credit. A 10 MN position is 0.05 credits; an infinite search stops when you stop it and is billed by actual nodes.
Your best friend. Breathtaking speed.
One dollar buys 500 credits — 100 billion Stockfish nodes. At depth 22 that is roughly 96 full 40-move games at the node ceiling; at depth 15 the same dollar covers roughly 2,000 reviews. Most games finish below the ceiling and the unused nodes are refunded.
Exact usage depends on the position. The engine stops at the lower of the selected depth or the reserved node cap, and you are billed for the nodes actually searched.
You can use ChessUrge without paying.
Good to know
No. Free and paid credits stay on your account until used.
One giga node is one billion Stockfish nodes. 100 GN is 100 billion nodes, which is exactly $1: 500 credits × 200 million nodes. For scale, a 10 MN analysis is 0.05 credits, a 100 MN analysis is 0.5 credits, and 100 GN could run 10,000 positions at 10 MN each.
Our display unit: 100 GN = $1. Credits are the unit of work: 500 credits = $1.
Puzzle analysis is cached to disk and reused. Re-opening a cached puzzle costs the original node count once, not again.
All credit purchases are final. Failed analysis is restored automatically. See refunds.