---

In the standard way of assigning relative value to pieces, the rook is ascribed a value of 5 pawn-equivalents, substantially more than the 3 pawn-equivalents of the bishop. And it is certainly true as a heuristic that it’s usually better to have a rook than a bishop, if it came to a choice in a game.

However, what is true as a generality, is not necessarily true in a specific position! In some settings, we understand this implicitly and intuitively; a pawn that is about to promote in an endgame will often be worth more than any piece other than the king. In other settings, this notion can be a more subtle idea, with the relative value of a piece dependent on mobility, and how “difficult” it may be to coordinate the pieces. The “difficulty” of a position to human minds is not something that is easy to quantify, especially with computer analysis. This takes judgement and reflection when using engine-aided analysis; for instance, considering the number of “good moves” vs “bad moves” in a position, how intuitive the good/bad moves are, and the impact of a mistake.

In the latter half of this game, I started with an inferior position according to the engine, with a bishop and a rook vs my opponent’s rook pair. One would often think that the rook pair should be winning! However, as we shall see, the bishop can have advantages with the greater aggregate mobility of the pieces, while rooks can be awkward to manoeuvre when there are still many pawns on the board. Let’s go!

I had the White pieces in this game against my opponent from Yemen with the Black pieces. I played the Vienna Game, to which Black responded with the uncommon Zhuravlev Countergambit (1. e4 e5 2. Nc3 Bb4). The Zhuravlev can be quite tricky, but it’s not a great response for Black unless they are familiar with it. White has many responses: Nd5, d4 and Nf3 are all great responses that Stockfish approves of. However, the move I prefer is what I’ve referred to as the “Giraffe-ish Counter-Countergambit”, (3. Qg4). As Black has moved out their king’s bishop early, we play a “Giraffe Attack”-like move (queen goes to the same square against the Anderssen Defense, where Black plays 2… Bc4) placing pressure on the g7-pawn. According to the Lichess community database, this move occurs only 1% of the time against the Zhuravlev, the TENTH most common move, but it has the highest win ratio of 59% (White) vs 37% (Black)!

In this game, Black blinked, and we won a concession when they played (3… g6). This weakens their kingside pawn structure, and we have an immediate potential attack by moving the White queen to the parking square in the Giraffe, (4. Qg3). There is a possibility of Qxe5+ which comes with an absolute fork of Black’s king and h8-rook!

Black trades off their Zhuravlev bishop for my queen’s knight (4… Bxc3 5. dxc3), a relative inaccuracy, and then shores up defence of the e5-pawn with (5… d6). This makes sense. However, here we have another tactic that we can use from the Giraffe, which is (6. Nf3), which we then seemingly sacrifice with (7. Nxe5!!), a brilliant move! It’s not a real sacrifice as if Black attempted to capture with dxe5, we have the previously identified Qxe5+ king-rook fork!

Black responds with (7… Qe7) and although I theoretically knew that there should be a way out of this, I psyched myself out when I couldn’t see it, and then convinced myself that I’d blundered! The correct move is (8. Ng4 Qxe4+ 9. Ne3), with the knight blocking the Black queen’s attack and putting it at risk of being harassed by pieces as I develop, winning tempo! In the game, I thought that the only way to capitalise on the position was to sacrifice the knight on f7 or g6… Bad thoughts! I eventually played (8. Nxg6??) after one-and-a-half minutes, opting to damage Black’s kingside defences.

By move 10, the dust settles after the opening exchange, and the queens are off the board. And so, we approach the middlegame where I’m obviously down a piece, but perhaps have some very slight advantage in development and still having the bishop pair. [-3.4] Trying to win from a losing position is its own fun!

The middlegame proceeds and I’m not doing great. On move 22, I make a tricky clearance sacrifice and what is fascinating is that on the following turn, Stockfish recommends for the first time in this game for Black to sacrifice one of their rooks for one of my bishops. Black of course, choses not to do this unintuitive exchange. However, as a result I recapture one of Black’s pieces for “free” and we’re back to piece equality, though Black is still up a point of material.

On move 29, we enter the endgame, Black with their rook pair and White with rook and bishop. As the rooks can only move in the cardinal directions (up, down, left, right), a pair of rooks have no access to diagonals. On the other hand, my bishop and rook as a UNIT, can move in both the cardinal directions and diagonals. The rook pair would definitely have the advantage in an open board, but with 9 pawns still present, and only two full open files, coordinating the rook pair can be very tricky indeed. Forming a battery, for instance, is difficult to achieve. Indeed, on move 31, Black forms a battery on the h-file, but Stockfish rated this a mistake with the evaluation almost back to equality [-0.4]!

If you look at the moves from around move 32 to the end of the game, one can see the easy synergy between the White bishop and rook, dancing around Black’s e5-pawn, which obstructs the mobility of their rook pair. On move 38, once again Stockfish identified that Black’s best move was to trade one of their rooks for White’s bishops, transforming the endgame to an equal, and probably drawing, rook-and-pawn endgame.

Unfortunately, Black didn’t see a dangerous situation that their king had found itself in. White had three adjacent “diagonal attackers” (bishop, king, pawn) on the fourth rank, effectively creating a forcefield blocking access to the fifth. My rook created a forcefield on the seventh rank. In essence, despite the “open” looking board, Black’s king was stuck on the sixth rank! Black decided to start capturing my queenside pawns, and in doing so, hung [+M2]!

This was a very beautiful checkmate; first with (39. g5+) and the king is forced to a single escape square (39… e6). And then, the killing blow (40. Bf5#)! The White rook controlled two borders of the square 3×3 squares around the Black king, the White king and pawn controlled the opposite corner, and the bishop sniped down the diagonal, while simultaneously giving x-ray defence of the White rook. GG!

The big takeaway from this game is to not assume that you’ve lost if the piece balance is such that you have a bishop, while your opponent has a rook. A bishop can sometimes be better than a rook, especially when there’s still a lot of pieces on the board!

Game: https://www.chess.com/game/live/105843003661

[Event "Live Chess"]
[Site "Chess.com"]
[Date "2024.04.03"]
[Round "-"]
[White "vitualis"]
[Black "Rafat19911"]
[Result "1-0"]
[CurrentPosition "4r3/pppR4/4k3/5BP1/PP3K2/2r5/2P5/8 b - -"]
[Timezone "UTC"]
[ECO "C25"]
[ECOUrl "https://www.chess.com/openings/Vienna-Game-Zhuravlev-Countergambit-3.Qg4"]
[UTCDate "2024.04.03"]
[UTCTime "00:28:51"]
[WhiteElo "1291"]
[BlackElo "1242"]
[TimeControl "900+10"]
[Termination "vitualis won by checkmate"]
[StartTime "00:28:51"]
[EndDate "2024.04.03"]
[EndTime "00:57:18"]
[Link "https://www.chess.com/game/live/105843003661"]
[WhiteUrl "https://images.chesscomfiles.com/uploads/v1/user/3711094.f52a0759.50x50o.ab18600a8723.png"]
[WhiteCountry "17"]
[WhiteTitle ""]
[BlackUrl "https://images.chesscomfiles.com/uploads/v1/user/98166616.f0d9fc22.50x50o.83a4905b1ce0.jpeg"]
[BlackCountry "151"]
[BlackTitle ""]

1. e4 {[%clk 0:15:10]} 1... e5 {[%clk 0:15:06.9]} 2. Nc3 {[%clk 0:15:15.5]} 2...
Bb4 {[%clk 0:15:07.3] Vienna Game: Zhuravlev Countergambit. This isn't an
especially good response for Black if they are \"freestyling\", but there are
tricks that Black can use against the Vienna player if they study down this line
deeply. [+0.4]} 3. Qg4 {[%clk 0:15:20.1][%c_arrow
c3d5;keyPressed;none;from;c3;opacity;0.8;to;d5;persistent;false,g1f3;keyPressed;none;from;g1;opacity;0.8;to;f3;persistent;false,d2d4;keyPressed;none;from;d2;opacity;0.8;to;d4;persistent;false][%c_highlight
d5;keyPressed;shift;opacity;0.8;square;d5;persistent;false,d4;keyPressed;shift;opacity;0.8;square;d4;persistent;false,f3;keyPressed;shift;opacity;0.8;square;f3;persistent;false]
The best moves are d4, Nd5, and Nf3, but I prefer the very fun \"Giraffe-ish
Queen\" attack [+0.1] $1 According to the Lichess community database, this move
only occurs 1\% of the time against the Zhuravlev, the TENTH most common move,
but it had the highest win ratio of 59\% (White) vs 37\% (Black) $1 This move
allows tactics similar to the Giraffe Attack against the Anderssen Defense (2.
Bc5) and is very fun $1} 3... g6 {[%clk 0:14:56.4][%c_arrow
g8f6;keyPressed;none;from;g8;opacity;0.8;to;f6;persistent;false][%c_highlight
f6;keyPressed;shift;opacity;0.8;square;f6;persistent;false] Just like in the
Giraffe Attack, White cannot immediately capture the g7-pawn safely with the
queen, and the best move for Black is the develop the king's knight to f6. Here,
we've won a concession by forcing Black to push the g-pawn forward, after
they've already developed their king's bishop.} 4. Qg3 {[%clk 0:15:17.8] And
just like in the Giraffe Attack, the g3 square is the typical \"parking square\"
for the queen. Note: we've an immediate attack on the e5-pawn, which potentially
comes with an absolute fork of the king and rook.} 4... Bxc3 $6 {[%clk
0:14:54.3][%c_effect c3;square;c3;type;Inaccuracy;persistent;true][%c_arrow
b8c6;keyPressed;none;from;b8;opacity;0.8;to;c6;persistent;false][%c_highlight
c6;keyPressed;none;opacity;0.8;square;c6;persistent;false] This trade is an
inaccuracy for Black [+1.3]} 5. dxc3 $6 {[%clk 0:15:01.3][%c_effect
c3;square;c3;type;Inaccuracy;persistent;true][%c_arrow
g3c3;keyPressed;none;from;g3;opacity;0.8;to;c3;persistent;false][%c_highlight
c3;keyPressed;none;opacity;0.8;square;c3;persistent;false] I wondered in the
game whether capturing with the queen was better; Stockfish thinks that it is.
The avoids damaging the pawn structure, but I opted to prioritise opening the
diagonal for the dark square bishop. [+0.5]} 5... d6 {[%clk 0:14:59.8]} 6. Nf3
{[%clk 0:15:09] This is a tactic in the Giraffe Attack... the knight can capture
the e5-pawn safely as it's not a real sacrifice as Qxe5+ absolute fork $1} 6...
h6 $6 {[%clk 0:14:52.4][%c_arrow
d8e7;keyPressed;none;from;d8;opacity;0.8;to;e7;persistent;false][%c_highlight
e7;keyPressed;none;opacity;0.8;square;e7;persistent;false][%c_effect
h6;square;h6;type;Inaccuracy;persistent;true] Black doesn't see the tactic,
making this move inaccurate [+0.9]} 7. Nxe5 $3 {[%clk 0:15:11.9][%c_effect
e5;square;e5;type;Brilliant;persistent;true][%c_highlight
e5;keyPressed;alt;opacity;0.8;square;e5;persistent;false] Brilliant move $1
However, I don't respond to Black's subsequent move wisely...} 7... Qe7 {[%clk
0:14:23][%c_arrow
g8f6;keyPressed;none;from;g8;opacity;0.8;to;f6;persistent;false][%c_highlight
f6;keyPressed;none;opacity;0.8;square;f6;persistent;false] This is somewhat
suboptimal as although Black can win back the e-pawn, White has (8. Ng4 Qxe4+ 9.
Ne3), and White is at risk of having their queen chased. However, I had
convinced myself that I would need to sacrifice the knight, so didn't consider
this. Rather, I was looking at smashing open Black's kingside pawns...} 8.
Nxg6 $4 {[%clk 0:13:42.5][%c_effect
g6;square;g6;type;Blunder;persistent;true][%c_highlight
g6;keyPressed;none;opacity;0.8;square;g6;persistent;false,g4;keyPressed;none;opacity;0.8;square;g4;persistent;false][%c_arrow
e5g4;keyPressed;none;from;e5;opacity;0.8;to;g4;persistent;false] Eventually, I
settled on this speculative attack and hoped that I would simply be able to
survive being down a knight in the middlegame $1 [-2.8]} 8... Qxe4+ {[%clk
0:13:50]} 9. Qe3 {[%clk 0:13:30.2] I decided to force the queen trade to nerf
their attack...} 9... Qxe3+ {[%clk 0:13:49.4]} 10. Bxe3 {[%clk 0:13:38.1]} 10...
fxg6 {[%clk 0:13:54.6] And so we approach the middlegame where I'm obviously
down a piece, but perhaps have some very slight advantage in development and
still having the bishop pair. [-3.4] Trying to win from a losing position is
it's own fun $1} 11. Bd3 {[%clk 0:13:46.3]} 11... Nc6 $6 {[%clk
0:13:34.3][%c_effect c6;square;c6;type;Inaccuracy;persistent;true][%c_arrow
c8f5;keyPressed;none;from;c8;opacity;0.8;to;f5;persistent;false][%c_highlight
f5;keyPressed;none;opacity;0.8;square;f5;persistent;false] Black is up a piece.
Their best strategic approach is to try to immediate force balanced material
trades to steer towards an endgame with material advantage. Not doing so gives
White a glimmer of hope $1} 12. Bxg6+ {[%clk 0:13:52.1]} 12... Ke7 {[%clk
0:13:31.1] This allowed a couple of \"tactical resources\"; certainly not
winning by any means, but it increases the tactical possibilities for White,
which means that errors by Black become more impactful $1 Black's king has lost
the right to castle. White also now has a pawn majority on the kingside, with
the f-pawn having become a passed pawn...} 13. O-O {[%clk 0:13:50.8][%c_arrow
e1c1;keyPressed;none;from;e1;opacity;0.8;to;c1;persistent;false][%c_highlight
c1;keyPressed;shift;opacity;0.8;square;c1;persistent;false] Stockfish thinks
that castling queenside is a bit better.} 13... Be6 {[%clk 0:13:25.5]} 14. Rfe1
{[%clk 0:13:50.6] Tactic: potentially Black's king could get exposed on the open
e-file; either with a discovered check, or have their bishop pinned.} 14... Nf6
{[%clk 0:13:02.9]} 15. b4 $6 {[%clk 0:13:32.8][%c_arrow
g6d3;keyPressed;none;from;g6;opacity;0.8;to;d3;persistent;false][%c_highlight
d3;keyPressed;none;opacity;0.8;square;d3;persistent;false][%c_effect
b4;square;b4;type;Inaccuracy;persistent;true] The engine doesn't believe in this
attack. I'm trying to dislodge Black's c6-knight so that I can access the d4
square with my dark square bishop.} 15... Rag8 {[%clk 0:13:02.8]} 16. Bd3 {[%clk
0:13:09.4]} 16... Ne5 $1 {[%clk 0:12:38.8][%c_effect
e5;square;e5;type;GreatFind;persistent;true] Great move and well found by Black $1
Nf3 is an absolute fork and the f3 square isn't defended as the g-pawn is pinned
by the g8-rook. And even if I defend against this, the knight can trade itself
for the d3-bishop...} 17. g3 $6 {[%clk 0:12:44.9][%c_highlight
h1;keyPressed;none;opacity;0.8;square;h1;persistent;false][%c_arrow
g1h1;keyPressed;none;from;g1;opacity;0.8;to;h1;persistent;false][%c_effect
g3;square;g3;type;Inaccuracy;persistent;true] I undercalculated and had assumed
that Black would capture my light square bishop. So, I played g3 to avoid future
problems with Black's rooks. As soon as I made the move, I saw the absolute
fork $1} 17... Nf3+ {[%clk 0:12:22.8]} 18. Kh1 {[%clk 0:12:51.5]} 18... Nxe1
{[%clk 0:12:17.8]} 19. Rxe1 {[%clk 0:13:00.9] D'oh $1 [-4.3] However, no need to
resign yet $1 There are still possibilities with the bishop pair. When the board
is crowded, the power of the rooks are often not quite felt.} 19... Kd8 $2 {[%clk
0:11:48.8][%c_effect d8;square;d8;type;Mistake;persistent;true][%c_arrow
g8e8;keyPressed;none;from;g8;opacity;0.8;to;e8;persistent;false,e7f7;keyPressed;none;from;e7;opacity;0.8;to;f7;persistent;false,e7d7;keyPressed;none;from;e7;opacity;0.8;to;d7;persistent;false][%c_highlight
e8;keyPressed;none;opacity;0.8;square;e8;persistent;false,f7;keyPressed;none;opacity;0.8;square;f7;persistent;false,d7;keyPressed;none;opacity;0.8;square;d7;persistent;false]
However, the position isn't easy for Black to navigate $1 They had the right idea,
to move the king off the e-file, but what seems like a sensible move (Kd8) was a
mistake $1 [-3.3] Alternate king moves (Kg7 and Kd7) were fine.} 20. a4 $6 {[%clk
0:12:53.8][%c_arrow
e3d4;keyPressed;none;from;e3;opacity;0.8;to;d4;persistent;false][%c_highlight
d4;keyPressed;none;opacity;0.8;square;d4;persistent;false][%c_effect
a4;square;a4;type;Inaccuracy;persistent;true] Bd4 first - with a pin of the
f6-knight to the rook, and a discovered attack of the rook on the e6-bishop is
best. In the game, I decided to move the a-pawn first out of the bishop's
attack. [-4.4]} 20... h5 {[%clk 0:11:48.4]} 21. Bd4 {[%clk 0:13:02.8]} 21...
Bd5+ $1 {[%clk 0:11:17.2][%c_effect
d5;square;d5;type;GreatFind;persistent;true][%c_highlight
d5;keyPressed;alt;opacity;0.8;square;d5;persistent;false] Black's only good move
in the position - getting out of the double-attack and the pin with a check} 22.
f3 $5 {[%clk 0:13:04.8][%c_arrow
h1g1;keyPressed;none;from;h1;opacity;0.8;to;g1;persistent;false][%c_highlight
g1;keyPressed;none;opacity;0.8;square;g1;persistent;false][%c_effect
f3;square;f3;type;Interesting;persistent;true] A tricky clearance sacrifice $1 Or,
that's what I would like to say. This was actually a careless mistake, but I
found the tactic seredipitously afterwards $1} 22... Bxf3+ {[%clk 0:11:12.8]} 23.
Kg1 {[%clk 0:13:13.5]} 23... Rh6 $4 {[%clk 0:10:55.9][%c_effect
h6;square;h6;type;Blunder;persistent;true][%c_highlight
h6;keyPressed;none;opacity;0.8;square;h6;persistent;false,d7;keyPressed;none;opacity;0.8;square;d7;persistent;false,g4;keyPressed;none;opacity;0.8;square;g4;persistent;false][%c_arrow
f6d7;keyPressed;none;from;f6;opacity;0.8;to;d7;persistent;false,f6g4;keyPressed;none;from;f6;opacity;0.8;to;g4;persistent;false]
This is surprisingly a blunder $1 The best move is to move the knight and to give
up one of the rooks $1 In the current position, the rook pair is not advantageous
against the bishops $1} 24. Rf1 $1 {[%clk 0:12:55.5][%c_effect
f1;square;f1;type;GreatFind;persistent;true][%c_highlight
f1;keyPressed;alt;opacity;0.8;square;f1;persistent;false] Never give up, never
surrender $1 This wins back a piece and the evaluation is no longer so dire $1 [-1]}
24... Ng4 {[%clk 0:07:48.6]} 25. Rxf3 {[%clk 0:12:57.3]} 25... h4 {[%clk
0:07:24.3]} 26. Bf5 {[%clk 0:12:19.3]} 26... hxg3 $6 {[%clk 0:06:52.1][%c_effect
g3;square;g3;type;Inaccuracy;persistent;true][%c_arrow
g4e5;keyPressed;none;from;g4;opacity;0.8;to;e5;persistent;false][%c_highlight
e5;keyPressed;none;opacity;0.8;square;e5;persistent;false] Black commits with
the attack, which is probably the right move tactically in human terms.
Stockfish doesn't believe in it though and we're almost back to equality
[-0.1] $1} 27. hxg3 $2 {[%clk 0:12:16.2][%c_effect
g3;square;g3;type;Mistake;persistent;true][%c_arrow
f3g3;keyPressed;none;from;f3;opacity;0.8;to;g3;persistent;false][%c_highlight
g3;keyPressed;none;opacity;0.8;square;g3;persistent;false] I seriously
contemplated capturing with the rook, but eventually chose the pawn. Rook was
apparently better $1 [-1.3].} 27... Ne5 {[%clk 0:06:23.9]} 28. Bxe5 {[%clk
0:12:12.4]} 28... dxe5 {[%clk 0:06:26.6]} 29. Kg2 {[%clk 0:12:05.2] And we enter
the endgame of the rook pair versus rook and bishop. Effective, rook vs bishop $1
I will make the ambit claim that when there are still many pawns on the board,
the rook and bishop can synergise in ways that the rook pair, limited to the
cardinal directions, do not $1} 29... Rd6 $6 {[%clk 0:05:56.9][%c_effect
d6;square;d6;type;Inaccuracy;persistent;true][%c_arrow
g8f8;keyPressed;none;from;g8;opacity;0.8;to;f8;persistent;false][%c_highlight
f8;keyPressed;none;opacity;0.8;square;f8;persistent;false] Manouevering the rook
pair in a somewhat crowded board is difficult $1 Stockfish evaluates that Rf8,
pinning the bishop to my rook is best [-0.6].} 30. Kh3 $2 {[%clk
0:11:14][%c_effect h3;square;h3;type;Mistake;persistent;true][%c_arrow
g3g4;keyPressed;none;from;g3;opacity;0.8;to;g4;persistent;false][%c_highlight
g4;keyPressed;none;opacity;0.8;square;g4;persistent;false] This was ostensibly a
mistake, but my goal was to march my king forward... [-2.6]} 30... Rh8+ {[%clk
0:05:49.4]} 31. Kg4 {[%clk 0:10:58.5]} 31... Rdh6 $2 {[%clk 0:05:47][%c_effect
h6;square;h6;type;Mistake;persistent;true][%c_arrow
h8g8;keyPressed;none;from;h8;opacity;0.8;to;g8;persistent;false][%c_highlight
g8;keyPressed;none;opacity;0.8;square;g8;persistent;false] Forming a battery
makes sense. But in the position it was a serious mistake $1 Rook pairs can be
complicated to use $1 [-0.4]} 32. Re3 {[%clk 0:11:00.2]} 32... Rg8+ {[%clk
0:05:40.2]} 33. Kf3 {[%clk 0:11:06.8]} 33... Re8 {[%clk 0:05:38.6]} 34. Rd3+
{[%clk 0:11:06.8]} 34... Ke7 {[%clk 0:05:31.7]} 35. Rd7+ {[%clk 0:10:42.6]}
35... Kf6 {[%clk 0:05:24.7]} 36. g4 $2 {[%clk 0:10:50.7][%c_effect
g4;square;g4;type;Mistake;persistent;true][%c_arrow
f5e4;keyPressed;none;from;f5;opacity;0.8;to;e4;persistent;false][%c_highlight
e4;keyPressed;none;opacity;0.8;square;e4;persistent;false] Pushing the pawn
forward and taking space made sense to me. However, this was a mistake as Black
had Rh3+ [-3.5]. However, this is their only good move.} 36... e4+ $2 {[%clk
0:05:08.6][%c_effect e4;square;e4;type;Mistake;persistent;true][%c_arrow
h6h3;keyPressed;none;from;h6;opacity;0.8;to;h3;persistent;false][%c_highlight
h3;keyPressed;none;opacity;0.8;square;h3;persistent;false] Which they missed.
Equality $1 [0.00] This mistake can be understood in that Black loses a major
asset, their passed pawn.} 37. Bxe4 {[%clk 0:10:58.5]} 37... Rh3+ {[%clk
0:05:07.8]} 38. Kf4 {[%clk 0:11:01.4] Notice, this very nice bit of king
opposition. Black's king is actually almost trapped in the centre of the board $1
With three diagonal attackers on the 4th rank and the rook on the 7th rank,
Black's king is stuck to only the 6th...} 38... Rxc3 $4 {[%clk 0:04:39][%c_arrow
e8e4;keyPressed;none;from;e8;opacity;0.8;to;e4;persistent;false][%c_highlight
e4;keyPressed;none;opacity;0.8;square;e4;persistent;false,c3;keyPressed;none;opacity;0.8;square;c3;persistent;false][%c_effect
c3;square;c3;type;Blunder;persistent;true] And Black misses it $1 Their best move
was to trade a rook for the bishop. However, they assumed that their king was
safe, and thought that they had the superior attack on my pawns, hanging [+M2] $1}
39. g5+ $1 {[%clk 0:10:49.1][%c_effect
g5;square;g5;type;GreatFind;persistent;true][%c_highlight
g5;keyPressed;alt;opacity;0.8;square;g5;persistent;false,e5;keyPressed;none;opacity;0.8;square;e5;persistent;false,f6;keyPressed;none;opacity;0.8;square;f6;persistent;false,g6;keyPressed;none;opacity;0.8;square;g6;persistent;false,f5;keyPressed;none;opacity;0.8;square;f5;persistent;false,g7;keyPressed;none;opacity;0.8;square;g7;persistent;false,f7;keyPressed;none;opacity;0.8;square;f7;persistent;false,e7;keyPressed;none;opacity;0.8;square;e7;persistent;false][%c_arrow
g5f6;keyPressed;none;from;g5;opacity;0.8;to;f6;persistent;false,f4e5;keyPressed;none;from;f4;opacity;0.8;to;e5;persistent;false,e4g6;keyPressed;none;from;e4;opacity;0.8;to;g6;persistent;false,d7g7;keyPressed;none;from;d7;opacity;0.8;to;g7;persistent;false]
Notice that Black's king has a single safe square of e6...} 39... Ke6 {[%clk
0:04:06]} 40. Bf5# {[%clk 0:10:57.6][%c_effect
f4;square;f4;type;Winner,e6;square;e6;type;CheckmateBlack][%c_arrow
d7f7;keyPressed;none;from;d7;opacity;0.8;to;f7;persistent;false,d7d5;keyPressed;none;from;d7;opacity;0.8;to;d5;persistent;false,g5f6;keyPressed;none;from;g5;opacity;0.8;to;f6;persistent;false,f4e5;keyPressed;none;from;f4;opacity;0.8;to;e5;persistent;false,f5d7;keyPressed;none;from;f5;opacity;0.8;to;d7;persistent;false,f4f5;keyPressed;none;from;f4;opacity;0.8;to;f5;persistent;false][%c_highlight
f7;keyPressed;none;opacity;0.8;square;f7;persistent;false,e7;keyPressed;none;opacity;0.8;square;e7;persistent;false,d7;keyPressed;none;opacity;0.8;square;d7;persistent;false,d5;keyPressed;none;opacity;0.8;square;d5;persistent;false,d6;keyPressed;none;opacity;0.8;square;d6;persistent;false,f6;keyPressed;none;opacity;0.8;square;f6;persistent;false,e5;keyPressed;none;opacity;0.8;square;e5;persistent;false,e6;keyPressed;none;opacity;0.8;square;e6;persistent;false,f5;keyPressed;none;opacity;0.8;square;f5;persistent;false]
And a beautiful checkmate in the centre of the board $1 GG $1} 1-0