---
title: "Calculating a Mutual Check Race in Xiangqi · Xiangqi Master"
description: "Count who runs out of checks or resources first, verify every forced reply exactly, and check whether your own general survives the sequence, not just theirs."
url: https://xiangqimaster.com/blog/how-do-i-calculate-when-both-sides-have-checks
updated: 2026-09-23
source: Xiangqi Master (https://xiangqimaster.com)
license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
---

# How do I calculate a tactic when both sides have checks available, a mutual check race?

These answers restate the rules implemented by our open-source engine, which follows the WXF laws and is regression-tested against the official 110-diagram repetition casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it against the engine before publishing.

> Direct answer
>
> **Work out who runs out of checks, or of anything useful to check with, first, and verify every forced reply exactly rather than assuming your side wins the race.** A mutual check exchange, most common in symmetrical positions like 順炮, is unforgiving: a single miscounted step can flip who actually comes out ahead.

## Why counting alone is not quite enough

It is tempting to simply count available checks on each side and assume whoever has more wins, but a check that achieves nothing beyond forcing a reply is not the same as one that also wins material or improves your position. Weigh what each check in the sequence actually accomplishes, not just whether a check is available.

## Do not forget to check your own safety, not just theirs

In the rush of a mutual checking sequence it is easy to calculate only whether your checks land, and forget to verify that your own general survives the exchange too, exactly the discipline described in [calculating a forcing sequence without blundering](https://xiangqimaster.com/blog/how-do-i-calculate-a-forcing-sequence-without-blundering). A line where you deliver the last check but your own general was exposed the whole time is not actually winning.

## Related questions

Is this specific to symmetrical openings like 順炮?

Most common there, but a mutual check race can arise in any sharp middlegame where both generals are somewhat exposed at once.

Should I avoid entering one of these if I am not confident calculating it?

Yes, if you cannot verify the sequence cleanly, a quieter continuation is usually safer than gambling on a race you are not sure you win.

## Related xiangqi resources

Same direction cannons

順炮 — the sharpest symmetrical opening

Xiangqi tactics

Forks, pins and discovered attacks

Check and checkmate

Including why stalemate is a loss

## Try it on a real board

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