Match ends, Heart of Midlothian 4, Dumbarton 0.
Hearts produced a stirring second-half display at Tynecastle to maintain their assault towards the Scottish Championship title.
Osman Sow's left-foot strike in the 53rd minute broke the deadlock before Danny Wilson headed home Billy King's cross 15 minutes later.
And King scored two late goals to underline Hearts's dominance.
The Jambos are 17 points ahead of second-placed Hibernian and have a game in hand over their Edinburgh rivals.
Sam Nicholson and Sow both tested visiting goalkeeper Danny Rogers early on while Adam Eckersley and Callum Paterson blazed efforts over the crossbar.
Sow forced a stunning save from Rogers just before the half-hour mark, with the keeper tipping a long-range effort onto the crossbar before recovering to deny Genero Zeefuik a tap-in.
The hosts went ahead eight minutes after the break when Sow lashed in from close range after Dumbarton failed to deal with a Nicholson corner.
The Sons were denied a leveller when Wilson produced a fine block to thwart Andrew Graham following a corner and Wilson put the result beyond doubt 21 minutes from time when he headed in from King's corner.
King rounded the win off in style, first slaloming his way through a host of challenges and firing past Rogers before racing into the area to slot under the keeper.

Line-ups
Hearts
Formation 4-4-2
- 1Alexander
- 2Paterson
- 5Ozturk
- 4Wilson
- 44Eckersley
- 11Nicholson
- 14Pallardo Gonzalez
- 6Gomis
- 7WalkerSubstituted forKingat 61'minutes
- 20SowSubstituted forKeatingsat 61'minutes
- 23ZeefuikSubstituted forEl Hassnaouiat 75'minutes
Substitutes
- 9El Hassnaoui
- 12King
- 13Hamilton
- 19Keatings
- 21Anderson
- 22McKay
- 30McGhee
Dumbarton
Formation 4-4-2
- 1Rogers
- 22WilsonSubstituted forGilhaneyat 77'minutes
- 4Graham
- 12Taggart
- 3LintonSubstituted forEastonat 66'minutes
- 17Petrie
- 8Agnew
- 6Turner
- 18Findlay
- 14Fleming
- 9DugganSubstituted forMegginsonat 85'minutes
Substitutes
- 5Mair
- 7Gilhaney
- 10Megginson
- 15McCallum
- 16Easton
- 19Ewings
- 20Campbell
- Referee:
- John Beaton
- Attendance:
- 15,631
Match Stats
- Possession
- Home66%
- Away34%
- Shots
- Home24
- Away4
- Shots on Target
- Home11
- Away1
- Corners
- Home9
- Away3
- Fouls
- Home8
- Away5
Live Text
Post update
Full Time
Second Half ends, Heart of Midlothian 4, Dumbarton 0.
Goal!
Goal! Heart of Midlothian 4, Dumbarton 0. Billy King (Heart of Midlothian) left footed shot from the centre of the box to the centre of the goal.
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Sam Nicholson (Heart of Midlothian) wins a free kick in the defensive half.
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Foul by Mark Gilhaney (Dumbarton).
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Foul by Sam Nicholson (Heart of Midlothian).
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Scott Taggart (Dumbarton) wins a free kick in the attacking half.
Goal!
Goal! Heart of Midlothian 3, Dumbarton 0. Billy King (Heart of Midlothian) left footed shot from outside the box to the bottom left corner.
Substitution
Substitution, Dumbarton. Mitchel Megginson replaces Chris Duggan.
Post update
Attempt missed. Soufian El Hassnaoui (Heart of Midlothian) right footed shot from outside the box is close, but misses to the left.
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Corner, Dumbarton. Conceded by Danny Wilson.
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Attempt saved. Soufian El Hassnaoui (Heart of Midlothian) right footed shot from outside the box is saved in the centre of the goal.
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Foul by Adam Eckersley (Heart of Midlothian).
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Chris Duggan (Dumbarton) wins a free kick in the defensive half.
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Attempt missed. Callum Paterson (Heart of Midlothian) right footed shot from outside the box is high and wide to the left.
Substitution
Substitution, Dumbarton. Mark Gilhaney replaces Mark Wilson.
Post update
Attempt saved. James Keatings (Heart of Midlothian) right footed shot from the centre of the box is saved in the centre of the goal.
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Sam Nicholson (Heart of Midlothian) wins a free kick in the defensive half.
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Foul by Chris Duggan (Dumbarton).
Substitution
Substitution, Heart of Midlothian. Soufian El Hassnaoui replaces Género Zeefuik.