利かずの駒並べ
縦と石を飛、角、桂に戻す

飛車、角行、桂馬はそのままで、その他の駒を全て歩兵に置き換えた場合の解は、以下の13通り及び左右反転の鏡像の計26通りである。
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  |  |  |  |  |  |  | 飛 |  |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  |  |  | 桂 |  | 桂 |  |  |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
| 桂 |  |  | 歩 |  | 歩 |  |  |  |
| 桂 |  | 歩 | 角 | 歩 | 角 | 歩 |  | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  |  |  |  |  |  |  | 飛 |  |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |  | 歩 |
|  |  |  | 桂 |  | 桂 |  |  |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  |  |  | 歩 |  | 歩 |  |  | 桂 |
| 歩 |  | 歩 | 角 | 歩 | 角 | 歩 |  | 桂 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  |  |  | 桂 |  | 桂 |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
| 桂 |  |  |  |  | 歩 |  | 歩 |  |
| 桂 |  | 歩 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  |  |  | 桂 |  | 桂 |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  |  | 桂 |  |  | 歩 |  | 歩 |  |
| 歩 |  | 桂 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  |  |  | 桂 |  | 桂 |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
| 桂 |  |  |  |  | 歩 |  | 歩 |  |
| 桂 |  | 歩 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  |  |  | 桂 |  | 桂 |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  |  | 桂 |  |  | 歩 |  | 歩 |  |
| 歩 |  | 桂 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
| 桂 |  |  |  |  | 桂 |  | 桂 |  |
|  |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
| 歩 |  |  |  |  | 歩 |  | 歩 |  |
| 桂 |  | 歩 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  | 飛 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 | 歩 | 歩 | 歩 | 歩 |
| 桂 |  |  |  |  | 桂 |  | 桂 |  |
| 桂 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  |  |  |  |  | 歩 |  | 歩 |  |
| 歩 |  | 歩 |  | 歩 | 角 | 歩 | 角 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |

| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  | 桂 |  |  | 桂 |  |  | 桂 |  |
| 歩 | 角 | 歩 |  | 桂 |  | 歩 | 角 | 歩 |
|  |  |  |  |  | 飛 |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  |  |  |  |  | 桂 |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  | 桂 |  |  | 桂 |  |  | 歩 |  |
| 歩 | 角 | 歩 |  | 桂 |  | 歩 | 角 | 歩 |
|  |  |  |  |  | 飛 |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  | 桂 |  |  |  |  |  |  |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  | 歩 |  |  | 桂 |  |  | 桂 |  |
| 歩 | 角 | 歩 |  | 桂 |  | 歩 | 角 | 歩 |
|  |  |  |  |  | 飛 |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  | 桂 |  |  |  |  |  | 桂 |  |
| 歩 |  | 歩 |  | 歩 |  | 歩 |  | 歩 |
|  | 歩 |  |  | 桂 |  |  | 歩 |  |
| 歩 | 角 | 歩 |  | 桂 |  | 歩 | 角 | 歩 |
|  |  |  |  |  | 飛 |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  |  |  |  |  | 飛 |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
|  | 桂 |  |  |  |  |  | 桂 |  |
| 歩 | 角 | 歩 |  | 歩 |  | 歩 | 角 | 歩 |
|  |  |  |  | 桂 |  |  |  |  |
| 歩 | 歩 | 歩 |  | 桂 |  | 歩 | 歩 | 歩 |
|  |  |  | 飛 |  |  |  |  |  |
| 歩 | 歩 | 歩 |  | 歩 |  | 歩 | 歩 | 歩 |
太字の歩は、金に置き換え可能であるが、元の問題の解になるためには最低でも6枚は必要である(金が4枚ある他、玉(2枚)の動きにも金の動きが全て含まれているため)。しかし6枚以上あるのは上記13種類のうち有効解の2種類だけであり、あとの11種類の無効解は5枚以下しかないため元の問題の解としては不適切である。