Method of Checkmating with a Rook

Beginning Chess

Beginning students--children and adults--do better if their learning process begins with few pieces. This principle guides the approach of Jose Capablanca in Chess Fundamentals (1921), a book that in my view remains the best single text for helping someone new to the game of chess build a foundation for lasting success. My self-published Five Days to Better Chess (2018) was created as a workbook for a summer youth chess camp and follows the approach charted by Capablanca.

Capablanca begins with basic checkmates, then moves on to simple pawn endgames, then some tactics such as one encounters in the middle game, and only after these three, offers comments on how to open the game from the starting position. In the opening, he confines himself to general principles illustrated through opening systems that he played in competition. He then repeats this sequence at a slightly more advanced level and finishes with illustrative games from his own practice, highlighting his own instructive losses before showing games that he won.

This week in my school clubs, I will be teaching students how to checkmate with a rook. Capablanca teaches this skill well in Chess Fundamentals and Bruce Pandolfini does so in Pandolfini's Endgame Course (1988). Positions from Pandolfini have been a staple of my teaching for at least 26 years.

Nine years ago, I wrote about different ideas chess players and teachers have expressed concerning the first lesson a student should have (see "Lesson One"). There, I extolled a book published in 1822: William Lewis, Elements of the Game of Chess. Lewis also teaches well the elementary ending of checkmating with a single rook.

This week, I will be using positions from Lewis, Elements.

Lewis's book is not friendly to the modern reader. Instead of diagrams, positions are described in prose. Chess notation, also, is archaic. Lewis's manner of writing also differs from what today's readers find clear. Elements of the Game of Chess in my view offers excellent instruction, but requires much labor to bring to today's students.

Two pages in Lewis, Elements

Here, then, are the six instructive positions offered by William Lewis.

White to move

Lewis articulated the basic principles that must be understood to accomplish this checkmate.

It is absolutely necessary, in order to checkmate with the rook, that you force the adversary's king to one of the sides of the board; your own king must moreover be in opposition to his, that is, with only one square between them. As his king may attack your rook, it will be necessary to have your own king near in order to guard it, therefore, the king and rook must cooperate in compelling his king to the last line. (52)

1.Rc8# 

Lewis points out that if White had a queen in stead of a rook, the same move would be the only checkmate from the position. If White's rook were on g6 instead of h6, the same move still checkmates. But, Lewis notes, if Black's king were on g8 and White's on h6, then Rc8+ forces Black's king off the back rank.

Lewis's second position emphasizes bringing the king into the correct position.

White to move

1.Kf6

As this move is the only one that confines the king to the back rank, Lewis finds it obvious.

1...Ke8

But, for the second move, Lewis observes that errors are frequent by those who have not mastered the principles of this checkmate. Some players check the king on the second move. Giving check at every opportunity is common among young scholastic players. I watched such a game last week in a school club. Another common inefficient approach is to keep moving the king.

The correct approach is to force the defending king back onto the square in front of one's own king.

2.Rd4 Kf8

And now we can deliver the checkmate that is akin to that in the first position.

The third position is identical to one I found in Pandolfini's Endgame Course. Pandolfini's explanation, "any rook move", is similar to Lewis, "your first move should be the rook to any one of the eleven squares it attacks."

White to move

1.Rg5 Kf8

Now, to drive the defending king back in opposition with our king, we simply keep our rook on the g-file.

2.Rg1 Ke8 3.Rg8#

The fourth position offered by Lewis resembles the one that Capablanca uses to explain the principles of how the rook and and king work together to accomplish this checkmate.

White to move

1.Ra7

First, by taking control of the seventh rank, we confine the opponent's king to the back rank.

1...Kg8 2.Ke2 Kf8 3.Ke3 Ke8 4.Ke4 Kd8 5.Ke5 Kc8 6.Kd6 Kb8

White to move

As the rook is attacked, it must move to safety. 

7.Rc7

This move is best as the rook is protected by the king and from this square, Black's king faces maximum containment.

7...Ka8 8.Kc6

We must move our king into position.

8...Kb8 9.Kb6 Ka8 10.Rc8#

In the fifth position, Black's king is in the center of the board. Lewis attempts to show the technique for driving the defending king to the edge of the board. From his position, checkmate can be forced in 16 moves, which is the longest distance to mate with this material. His solution took 18 moves. I managed to do it in 17 against Stockfish 19 using less than twenty seconds.

White to move

1.Re8

This move is one of nine possible perfect moves in the position.

1...Kd5 2.Kg2 Kd4 3.Kf3 Kd5 4.Re4 Kd6 5.Ke3 Kd5 6.Kd3 Kc5 7.Rd4 Kb5 8.Rc4 Kb6

White to move

Up to this point, Stockfish cannot improve upon the moves offered by Lewis.

9.Kd4

9.Kc3 leads to checkmate in fewer moves.

9...Kb5 10.Kd5

Again, Kc3 was a better move.

10...Kb6 11.Rc5 Kb7 12.Rc6 Kb8 13.Kc5 Kb7 14.Kb5 Ka7 15.Rc7+ Ka8 16.Kc6 Kb8 17.Kb6 Ka8 18.Rc8#

These days, it is possible to practice this checkmate by playing against the computer. One can also set up this position on a chessboard and play both sides, as I did in my youth with this and the other elementary checkmates. Or, one can practice against a friend, taking turns having the stronger side.

Lewis offers as a final position in this chapter of Elements of the Game of Chess a position from which checkmate can be forced in four moves moving the king only once, offering the solution, beginning with 1.Kc6. He also notes that checkmate can be forced in four moves beginning with a rook move, but leaves it to the student to work out the solution.

White to move

Try it.

After 1.Kb6, White moves only the rook.
Then, start with a rook move and force checkmate on the fourth move.