diff --git a/src/index.ts b/src/index.ts
index 7176b12..e3ef0e1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -30,3 +30,5 @@ export { mutableSignal } from './utils/mutable-signal';
 
 export type { RNG } from './utils/rng';
 export { createRNG, Mulberry32RNG } from './utils/rng';
+
+export * from '@preact/signals-core';
\ No newline at end of file
diff --git a/src/samples/onitama/commands.ts b/src/samples/onitama/commands.ts
index 24487cc..3f442e7 100644
--- a/src/samples/onitama/commands.ts
+++ b/src/samples/onitama/commands.ts
@@ -53,7 +53,7 @@ export function getCardMoveCandidates(state: OnitamaState, cardName: string, pla
 /**
  * 检查移动是否合法
  */
-function isValidMove(state: OnitamaState, cardName: string, fromX: number, fromY: number, toX: number, toY: number, player: PlayerType): string | null {
+export function isValidMove(state: OnitamaState, cardName: string, fromX: number, fromY: number, toX: number, toY: number, player: PlayerType): string | null {
     // 检查玩家是否拥有该卡牌
     if (!playerHasCard(state, player, cardName)) {
         return `玩家 ${player} 不拥有卡牌 ${cardName}`;
@@ -251,7 +251,7 @@ const checkWin = registry.register({
 /**
  * 获取玩家可用的移动
  */
-function getAvailableMoves(state: OnitamaState, player: PlayerType): Array<{card: string, fromX: number, fromY: number, toX: number, toY: number}> {
+export function getAvailableMoves(state: OnitamaState, player: PlayerType): Array<{card: string, fromX: number, fromY: number, toX: number, toY: number}> {
     const moves: Array<{card: string, fromX: number, fromY: number, toX: number, toY: number}> = [];
 
     // 获取玩家的所有卡牌