Player #1373

klaashaas

MemberNL

Registered: 1 Jul 2002
Last active · UTC: 23 Oct 2026

About

Hi, I'm Mathijs Claassen from The Netherlands.

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Ratings & current tournaments

A ? marks a rating with higher uncertainty.

Game / variant	Rating	Rank	Ladder position	Championship
Chess	1498.5	16 kyu	Not registered	Not in a current group
Chess · Chess960	1473.6	19 kyu	Not registered	Not in a current group
Go · Size 19x19	2088.6	1 kyu	#16	Not in a current group
Go · Size 13x13	1962.6	3 kyu	Not registered	League 1 · Group 1
Go · Size 9x9	1986.8	4 kyu	Not registered	Not in a current group
Go · Toroidal Go	1773.3	9 kyu	Not registered	Not in a current group
Go · Hahn Pointing System	1525.5	17 kyu	Not registered	Not in a current group
Go · Random100	1545.7	16 kyu	Not registered	Not in a current group
Go · Size 37x37	1612.1	17 kyu	Not registered	Not in a current group
XiangQi	1381.6	19 kyu	Not registered	Not in a current group
Draughts · International Draughts	1609.3	16 kyu	Not registered	Not in a current group
Draughts · English Draughts/Checkers	1529.1	18 kyu	Not registered	Not in a current group
Draughts · Dameo	1477.0	18 kyu	Not registered	Not in a current group
CONHEX · Conhex	1700.7	10 kyu	#6	Not in a current group
Shogi	1375.0	18 kyu	Not registered	Not in a current group
Shogi · Mini Shogi 5x5	1500.5	18 kyu	Not registered	Not in a current group
Shogi · Tori Shogi	Not rated	—	Not registered	Not in a current group
Shogi · Shogi 3x4	Not rated	—	Not registered	Not in a current group
WYPS · Dutch 8	1516.8	19 kyu	Not registered	Not in a current group
WYPS · Numeric	1521.1	14 kyu	Not registered	Not in a current group
WYPS · Numeric small	1593.2	12 kyu	Not registered	Not in a current group
QYPS · Size 8	1624.4	15 kyu	Not registered	Not in a current group
QYPS · Size 5	1475.3	18 kyu	Not registered	Not in a current group
Polyomino · penta	1480.4	15 kyu	Not registered	Not in a current group
Polyomino · mini	1485.2	16 kyu	Not registered	Not in a current group
Polyomino · small	1521.4	15 kyu	Not registered	Not in a current group
Polyomino · hexa	1531.5	17 kyu	Not registered	Not in a current group
OSKI · English	1438.7	17 kyu	Not registered	Not in a current group
OSKI · Dutch	1486.2	17 kyu	Not registered	Not in a current group
OSKI · Greek	Not rated	—	Not registered	Not in a current group
Twixt PP · Size 24	1698.0	10 kyu	Not registered	Not in a current group
Hex · Size 13	1761.2	8 kyu	Not registered	Not in a current group
Hex · Size 11	1485.0	20 kyu	Not registered	Not in a current group
Hex · Size 19	1687.0	15 kyu	Not registered	Not in a current group
Reversi · Size 6x6	1853.1	7 kyu	#1	Not in a current group
Reversi · Size 8x8	2252.3	2 dan	Not registered	Not in a current group
Reversi · Size 10x10	2404.9	5 dan	#2	Not in a current group
Reversi · Size 12x12	2040.9	6 kyu	#2	League 1 · Group 1
DVONN	1786.2	9 kyu	Not registered	Not in a current group
TZAAR · Random	1780.4	6 kyu	#8	Not in a current group
LYNGK · Stack6	1640.3	11 kyu	Not registered	Not in a current group
Amazons · Size 10	1756.4	8 kyu	Not registered	Not in a current group
Golem Word Game · 100 letters	1564.5	18 kyu	Not registered	Not in a current group
Four in a row · Size 9x9	1755.1	12 kyu	Not registered	Not in a current group
Gomoku · Gomoku Pro 9x9	1392.6	17 kyu	Not registered	Not in a current group
Gomoku	1632.2	12 kyu	Not registered	Not in a current group
Connect6 · Size 19	1535.1	13 kyu	Not registered	Not in a current group
StreetSoccer · Street Soccer	1942.7	4 kyu	#16	Not in a current group
Dots and Boxes · Size 5x5	1827.3	7 kyu	Not registered	Not in a current group
Dots and Boxes · Size 4x4	Not rated	—	Not registered	Not in a current group
Dots and Boxes · Size 6x6	1647.7	17 kyu	Not registered	Not in a current group
Breakthrough · Size 8	1572.6	14 kyu	Not registered	Not in a current group
Lines of Action · Size 8x8	1589.7	12 kyu	Not registered	Not in a current group
Lines of Action · Scramble	1470.9	20 kyu	Not registered	Not in a current group
Lines of Action · Quick	1530.9	19 kyu	Not registered	Not in a current group
EinStein würfelt nicht! · 3-points match	1717.3	9 kyu	Not registered	Not in a current group
EinStein würfelt nicht! · 5-points match	Not rated	—	Not registered	Not in a current group
EinStein würfelt nicht! · 7-points match	1523.6	16 kyu	Not registered	Not in a current group
EinStein würfelt nicht! · 11-points match	Not rated	—	Not registered	Not in a current group
EinStein würfelt nicht! · 50-points match	Not rated	—	Not registered	Not in a current group
EinStein würfelt nicht! · 1-point game	1575.2	14 kyu	Not registered	Not in a current group
EinStein würfelt nicht! · Black hole	1453.6	19 kyu	Not registered	Not in a current group
EinStein würfelt nicht! · Backwards capture	Not rated	—	Not registered	Not in a current group
Havannah · Size 10	1658.7	11 kyu	Not registered	Not in a current group
Havannah · Size 4	Not rated	—	Not registered	Not in a current group
Havannah · Size 5	1462.5	19 kyu	Not registered	Not in a current group
Havannah · Size 6	Not rated	—	Not registered	Not in a current group
Havannah · Size 7	Not rated	—	Not registered	Not in a current group
Havannah · Size 8	1493.8	15 kyu	Not registered	Not in a current group
Slither · Size 13	1545.8	14 kyu	Not registered	Not in a current group
Slither · Size 9	1494.2	16 kyu	Not registered	Not in a current group
Catchup · Size 5	1759.7	7 kyu	#5	Not in a current group
Catchup · Random	1697.4	8 kyu	#4	Not in a current group
Morelli · Size 13	1597.9	17 kyu	Not registered	Not in a current group
Morelli · Size 9	1540.7	15 kyu	Not registered	Not in a current group
Morelli · Size 11	1528.7	18 kyu	Not registered	Not in a current group
Morelli · Size 31	Not rated	—	Not registered	Not in a current group
Tumbleweed · Size 4	1354.2	16 kyu	Not registered	Not in a current group
Tumbleweed · Size 6	1439.9	15 kyu	Not registered	Not in a current group
Tumbleweed · Size 8	1475.3	20 kyu	Not registered	Not in a current group
Ocean's Eleven · 54-card	1619.6	9 kyu	#2	Not in a current group
Sixfold · Random board	1483.0	17 kyu	#6	Not in a current group
Fendo · Size 7	1491.0	17 kyu	Not registered	Not in a current group
Backgammon · 7-point match (doubling cube, Crawford)	Not rated	—	#3	Not in a current group
Backgammon · Single game (no doubling cube)	Not rated	—	#6	Not in a current group

Game archive

Game statusGame and variantReset filters

Games are ordered by game ID, newest first, rather than by finish date.

All games

Game	First player	Second player	Result	Finished
#2569704 · StreetSoccer · Street Soccer	klaashaas	simon craddock	In progress
#2569379 · Backgammon · Single game (no doubling cube)	Richard Malaschitz	klaashaas	In progress
#2569373 · Backgammon · Single game (no doubling cube)	vstjrt	klaashaas	In progress
#2569351 · Backgammon · 7-point match (doubling cube, Crawford)	goseji	klaashaas	In progress
#2569308 · TZAAR · Random	klaashaas	XanderN	In progress
#2569305 · CONHEX · Conhex	CALVOROTI	klaashaas	In progress
#2569287 · Backgammon · 7-point match (doubling cube, Crawford)	klaashaas	GolemBot Two	In progress
#2569286 · Backgammon · Single game (no doubling cube)	klaashaas	GolemBot Two	In progress
#2568997 · StreetSoccer · Street Soccer	OliverKoehn	klaashaas	In progress
#2568150 · StreetSoccer · Street Soccer	nopanic	klaashaas	In progress
#2568102 · Sixfold · Random board	Luca Cerrato	klaashaas	In progress
#2567854 · Ocean's Eleven · 54-card	klaashaas	William Fraser	In progress
#2567827 · Catchup · Size 5	GolemBot Two	klaashaas	In progress
#2567761 · CONHEX · Conhex	Luca Cerrato	klaashaas	In progress
#2567756 · Catchup · Random	jytou	klaashaas	In progress
#2567740 · Sixfold · Random board	Akson	klaashaas	klaashaas won	19 Oct 2026
#2567680 · Sixfold · Random board	GolemBot Two	klaashaas	In progress
#2567679 · Hex · Size 13	klaashaas	GolemBot Two	In progress
#2567678 · DVONN	klaashaas	GolemBot Five	GolemBot Five won	3 Oct 2026
#2567677 · Connect6 · Size 19	jadenboard	klaashaas	jadenboard won	2 Oct 2026
#2567676 · Ocean's Eleven · 54-card	Eliott A	klaashaas	In progress
#2567675 · LYNGK · Stack6	klaashaas	Golyadkin	klaashaas won	18 Oct 2026
#2567673 · Go · Size 19x19	GolemBot Two	klaashaas	In progress
#2567672 · Go · Size 13x13	GolemBot Two	klaashaas	GolemBot Two won	20 Oct 2026
#2567671 · DVONN	GolemBot Four	klaashaas	klaashaas won	2 Oct 2026
#2567670 · Sixfold · Random board	klaashaas	Hjallti	In progress
#2567669 · Draughts · International Draughts	GolemBot Two	klaashaas	klaashaas won	15 Oct 2026
#2567668 · Sixfold · Random board	klaashaas	GolemBot One	klaashaas won	2 Oct 2026
#2567543 · Reversi · Size 12x12	encio	klaashaas	In progress
#2567542 · Reversi · Size 12x12	klaashaas	hoodie	In progress
#2567541 · Reversi · Size 12x12	Oakmoss	klaashaas	klaashaas won	3 Oct 2026
#2567540 · Reversi · Size 12x12	klaashaas	goseji	In progress
#2567539 · Reversi · Size 12x12	varegka	klaashaas	In progress
#2567538 · Reversi · Size 12x12	klaashaas	sarok	In progress
#2567537 · Reversi · Size 12x12	Diamante	klaashaas	In progress
#2567536 · Reversi · Size 12x12	klaashaas	Toptal	In progress
#2567535 · Reversi · Size 12x12	Margaliot	klaashaas	In progress
#2567178 · Ocean's Eleven · 54-card	encio	klaashaas	In progress
#2567175 · Go · Size 13x13	klaashaas	GolemBot Three	GolemBot Three won	3 Oct 2026
#2567174 · Reversi · Size 8x8	klaashaas	GolemBot Five	klaashaas won	2 Oct 2026
#2567131 · Sixfold · Random board	klaashaas	GolemBot Two	GolemBot Two won	2 Oct 2026
#2566916 · TZAAR · Random	sfcontra	klaashaas	klaashaas won	7 Oct 2026
#2566479 · Ocean's Eleven · 54-card	Matteo A.	klaashaas	In progress
#2566453 · CONHEX · Conhex	klaashaas	bennok	In progress
#2566412 · Reversi · Size 10x10	Toptal	klaashaas	In progress
#2566387 · Catchup · Random	klaashaas	Hjallti	In progress
#2566134 · Catchup · Size 5	klaashaas	jytou	In progress
#2565722 · TZAAR · Random	Raptoricus	klaashaas	In progress
#2565704 · Catchup · Random	Luca Cerrato	klaashaas	In progress
#2565512 · Go · Size 19x19	kyy	klaashaas	In progress