Anvil Table · study notes
Blackjack counting systems compared
Blackjack Apprenticeship teaches Hi-Lo only on purpose. Anvil Table is the free, no-install multi-system trainer for people studying Zen, Omega II, Wong Halves, KO, REKO, Hi-Opt, or Red 7 as well.
Last updated 2026-08-21
Each page has its own tag table, betting correlation (BC), playing efficiency (PE), weaknesses, and a link that opens the trainer with that system preselected. Read the basic-strategy notes first if you have not drilled hard 16 vs 10.
| System | Level | BC | PE | True count? |
|---|---|---|---|---|
| Hi-Lo | Level 1 | 0.97 | 0.51 | Yes |
| KO (Knock-Out) | Level 1 · unbalanced | 0.98 | 0.55 | No — RC only |
| REKO | Level 1 · unbalanced | 0.98 | 0.55 | No — RC only |
| Hi-Opt I | Level 1 · ace-neutral | 0.88 | 0.61 | Yes |
| Hi-Opt II | Level 2 · ace-neutral | 0.91 | 0.67 | Yes |
| Omega II | Level 2 · ace-neutral | 0.92 | 0.67 | Yes |
| Zen Count | Level 2 | 0.96 | 0.63 | Yes |
| Wong Halves | Level 3 · fractional | 0.99 | 0.56 | Yes |
| Red 7 | Level 1 · unbalanced | 0.98 | 0.54 | No — RC only |
BC and PE figures are the commonly published correlations for these tag vectors (Griffin / Schlesinger literature). See methodology. Wong Halves in the trainer is paid ($1 count / $5 deviations). Hi-Lo deviations are $5. Menu: subscriptions.
Educational study aid only. No real money. Do not use a phone or this trainer to assist play at a live casino table. Trainer.