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Janssen, Toon

Standard: 1836 Rapid: 1858 Blitz: 1886 (last updated 2026-11-02)
FIDE ID: 1025449 (view FIDE profile)
Federation: NED Sex: M Birth Year: 1956 Age: 70
Title: — Women's title: — Other title: — FOA title: —
Games: 4 Wins: 0 (0%) Draws: 1 (25%) Losses: 3 (75%)
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Dossier

3 of 4 games analyzed.

Accuracy: 89.1%
Opened Nf3: 1/1
Castled kingside: 3Same-side castling: 3
Fianchettoed kingside: 3Played on the kingside: 2Played on the queenside: 1
Kept the bishop pair: 3Sacrificed material: 3Backward pawn: 2Initiated exchanges: 2Isolated pawn: 1Space advantage: 1Avoided exchanges: 1Active pieces: 1
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Openings

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As White 1 game 0W 0D 1L
King's Indian Attack 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
As Black 3 games 0W 1D 2L
King's Indian Defense 3 games 0W 1D 2L
Orthodox Variation 1 game 0W 1D 0L
Glek Defense 1 game 0W 1D 0L
Fianchetto Variation 1 game 0W 0D 1L
Kavalek Defense 1 game 0W 0D 1L
Normal Variation 1 game 0W 0D 1L
Standard Development 1 game 0W 0D 1L
Blunders Top 4 of 17

This player's costliest moves in analyzed games. Can you find the winning move?

2026.07.21 · 33... h4 (−18.9% win chance) 1/2-1/2
Janssen, Toon
Mienis, Dennis
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2026.07.21 · 37... Bh6 (−16.3% win chance) 1/2-1/2
Janssen, Toon
Mienis, Dennis
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2026.07.21 · 40... Be3 (−14.6% win chance) 1/2-1/2
Janssen, Toon
Mienis, Dennis
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2026.07.21 · 27... Qe7 (−13.6% win chance) 1/2-1/2
Janssen, Toon
Mienis, Dennis
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View blunders & mistakes
Games Showing all 4 games
Date Event Round Color Opponent Result Accuracy % First moves