Player #1373

klaashaas

MemberNL

Registered: 1 Jul 2002
Last active · UTC: 15 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	1986.6	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	1695.1	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	1834.8	8 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	1793.6	6 kyu	#9	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	1929.9	4 kyu	#27	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	1751.8	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

Game archive

Game statusGame and variantReset filters

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

Current games

Game	First player	Second player	Result
#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	In progress
#2567680 · Sixfold · Random board	GolemBot Two	klaashaas	In progress
#2567679 · Hex · Size 13	klaashaas	GolemBot Two	In progress
#2567676 · Ocean's Eleven · 54-card	Eliott A	klaashaas	In progress
#2567675 · LYNGK · Stack6	klaashaas	Golyadkin	In progress
#2567673 · Go · Size 19x19	GolemBot Two	klaashaas	In progress
#2567672 · Go · Size 13x13	GolemBot Two	klaashaas	In progress
#2567670 · Sixfold · Random board	klaashaas	Hjallti	In progress
#2567543 · Reversi · Size 12x12	encio	klaashaas	In progress
#2567542 · Reversi · Size 12x12	klaashaas	hoodie	In progress
#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
#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
#2564922 · Reversi · Size 10x10	Margaliot	klaashaas	In progress
#2564921 · CONHEX · Conhex	vukung	klaashaas	In progress
#2564826 · Catchup · Size 5	David Strupl	klaashaas	In progress
#2563432 · Reversi · Size 6x6	Nagy Fathy	klaashaas	In progress
#2563395 · Go · Size 19x19	klaashaas	add3993	In progress
#2563223 · Ocean's Eleven · 54-card	Carroll	klaashaas	In progress
#2562992 · Reversi · Size 6x6	Roel	klaashaas	In progress
#2562733 · Reversi · Size 10x10	klaashaas	Smaughster	In progress
#2562336 · Reversi · Size 12x12	klaashaas	Smaughster	In progress
#2562332 · TZAAR · Random	klaashaas	Oblomobka	In progress
#2562264 · StreetSoccer · Street Soccer	klaashaas	Randolph King	In progress
#2561633 · Go · Size 19x19	dead eye	klaashaas	In progress
#2559363 · Reversi · Size 12x12	Toptal	klaashaas	In progress
#2559003 · Go · Size 19x19	klaashaas	Smaughster	In progress
#2558398 · Go · Size 19x19	klaashaas	Tim Shih	In progress
#2558320 · Reversi · Size 12x12	Roel	klaashaas	In progress
#2556984 · Go · Size 13x13	Thomas	klaashaas	In progress
#2556983 · Go · Size 13x13	klaashaas	DouglasPB	In progress