Kasahara Reiko (笠原礼子)

Place: Tokyo, Japan

Rating: 1848.71, Std: 80.55, Rank: 1004

First game: 2020-08-10, Last game: 2026-10-18

Top rating: 1852.20 (2026-09-27)

Games: 116, Wins: 25, Draws: 2, Losses: 89

Gy1: 27, Gy2: 48, Gy5: 93

66 Suiseisen Tournament final round
Date	2026-10-18		Rating	1848.71
Round	Color	Result	Opponent
2	White	Loss	Yamamoto Ousuke	2085.18
3	Black	Loss	Yoshikawa Takayuki	1875.45
4	White	Loss	Komatsu Subaru	1900.45
5	White	Loss	Okada Akihiro	1916.15
66 Suiseisen Tournament 1st round
Date	2026-09-27		Rating	1852.20
Round	Color	Result	Opponent
1	Black	Win	Okada Akihiro	1916.04
2	Black	Win	Yamamoto Ousuke	2082.93
3	White	Win	Kawasumi Yuka	1747.67
4	Black	Win	Lu Yuyang	1953.93
43rd Kanto Championship
Date	2026-04-05		Rating	1835.05
Round	Color	Result	Opponent
4	Black	Draw	Suzuki Tetsuji	1785.68
5	White	Loss	Suzuki Yoshitaka	2082.27
6	White	Loss	Tamura Kazumasa	2336.72
43rd Shinei Tournament
Date	2026-03-29		Rating	1834.61
Round	Color	Result	Opponent
1	White	Loss	Yamamoto Ousuke	2100.12
2	Black	Win	Arima Daiki	1422.78
3	Black	Loss	Terabaru Wataru	1878.29
4	White	Win	Yoshikawa Takayuki	1851.62
5	White	Loss	Miyoshi Daisuke	1700.09
20th All Japan Championship
Date	2026-02-23		Rating	1835.09
Round	Color	Result	Opponent
1	Black	Loss	Fujita Maiko	2483.41
2	Black	Loss	Miyamoto Syunju	2336.66
3	Black	Loss	Yoshikawa Tomoki	2474.84
29th New Year (Mikami) Cup
Date	2026-01-11		Rating	1836.17
Round	Color	Result	Opponent
A1	Black	Loss	Iwano Fumio	2158.92
A2	White	Loss	Kishimoto Shogo	2217.49
A3	White	Loss	Lu Yuyang	1935.47
A4	Black	Win	Sakai Yuuki	1777.99
A5	Black	Win	Ito Midori	1874.48
1 1dan 2dan Tournament
Date	2025-11-30		Rating	1835.47
Round	Color	Result	Opponent
1	Black	Loss	Yoshikawa Takayuki	1851.50
2	Black	Loss	Hayashi Kohei	2094.59
3	Black	Win	Suzuki Mika	1707.01
65 Suiseisen Tournament final round
Date	2025-09-28		Rating	1836.79
Round	Color	Result	Opponent
1	Black	Loss	Iwano Fumio	2160.11
2	White	Loss	Kishimoto Shogo	2218.07
3	White	Loss	Nishizawa Aoi	2175.22
4	Black	Loss	Yoshikawa Tomoki	2429.87
5	White	Loss	Suenaga Daiki	2158.59
65 Suiseisen Tournament 1st round
Date	2025-09-15		Rating	1837.82
Round	Color	Result	Opponent
1	Black	Loss	Kishimoto Shogo	2216.61
2	White	Win	Komatsu Subaru	1892.03
3	Black	Win	Miyoshi Daisuke	1697.23
4	Black	Loss	Suenaga Daiki	2157.64
42nd Kanto Championship
Date	2025-06-28		Rating	1838.42
Round	Color	Result	Opponent
1	White	Loss	Ishitani Shin-ichi	2371.32
2	Black	Loss	Iwano Fumio	2175.84
3	Black	Loss	Maruta Hiroki	2270.84
42nd Shinei Tournament
Date	2025-03-30		Rating	1841.56
Round	Color	Result	Opponent
1	Black	Loss	Yoshikawa Tomoki	2358.49
2	White	Win	Suzuki Tetsuji	1798.83
3	Black	Loss	Tanaka Akito	2029.83
4	Black	Loss	Kishimoto Shogo	2199.49
5	White	Loss	Suzuki Yoshitaka	2038.68
28th New Year (Mikami) Cup
Date	2025-01-19		Rating	1845.71
Round	Color	Result	Opponent
A1	Black	Loss	Shimura Hiroki	2234.52
A2	Black	Loss	Hayashi Kohei	2088.44
A3	Black	Win	Suzuki Tetsuji	1794.66
A4	White	Win	Suzuki Mika	1736.93
64 Suiseisen Tournament 1st round
Date	2024-09-22		Rating	1846.41
Round	Color	Result	Opponent
1	Black	Loss	Yoshikawa Tomoki	2276.89
2	Black	Win	Ito Midori	1874.50
3	Black	Win	Suzuki Yoshitaka	2014.39
4	Black	Loss	Shimura Hiroki	2199.15
41st Kanto Championship
Date	2024-07-21		Rating	1839.28
Round	Color	Result	Opponent
4	Black	Loss	Maruta Hiroki	2264.04
5	White	Loss	Yoshikawa Tomoki	2254.79
6	Black	Loss	Fujikawa Masaki	2106.30
41st Shinei Tournament
Date	2024-04-21		Rating	1832.42
Round	Color	Result	Opponent
1	White	Loss	Shimura Hiroki	2164.75
2	Black	Win	Suzuki Tetsuji	1779.22
3	Black	Win	Aoyagi Toshiki	1799.79
4	White	Loss	Kishimoto Shogo	2211.71
5	White	Loss	Tomobe Katsuhiro	2133.68
27th New Year (Mikami) Cup
Date	2024-01-14		Rating	1819.62
Round	Color	Result	Opponent
A1	Black	Loss	Suenaga Daiki	2149.48
A2	Black	Loss	Tomobe Katsuhiro	2123.50
A3	White	Win	Nakamura Keigo	1803.65
A5	Black	Loss	Shimura Hiroki	2157.80
40th Shinei Tournament
Date	2023-04-09		Rating	1780.76
Round	Color	Result	Opponent
1	White	Loss	Kinoshita Osamu	2096.77
2	White	Loss	Shimura Hiroki	2166.59
3	White	Loss	Yoshikawa Tomoki	2149.09
4	White	Loss	Nakamura Keigo	1832.24
5	White	Win	Kato Shota	1997.24
26th New Year (Mikami) Cup
Date	2023-01-15		Rating	1769.05
Round	Color	Result	Opponent
A1	Black	Loss	Toyo Koryu	2204.60
A2	White	Win	Yamamoto Ousuke	2011.74
A3	White	Loss	Okada Akihiro	1927.06
A4	Black	Win	Yamada Eiji	1839.09
A5	White	Loss	Yoshimoto Yuta	2291.82
23 Renju Emperor Tournament Kanto area 1st round
Date	2022-11-06		Rating	1751.58
Round	Color	Result	Opponent
1	Black	Loss	Yokoyama Shota	2465.79
2	Black	Loss	Maruta Koji	2180.96
3	Black	Loss	Suzuki Yoshitaka	2007.16
4	White	Loss	Okada Akihiro	1921.75
62 Suiseisen Tournament 1st round
Date	2022-09-23		Rating	1743.30
Round	Color	Result	Opponent
1	Black	Loss	Okada Akihiro	1918.69
2	Black	Loss	Kishimoto Shogo	2170.70
3	Black	Draw	Ito Midori	1818.63
4	Black	Loss	Yamada Eiji	1844.44
39 Kanto Championship
Date	2022-07-31		Rating	1736.73
Round	Color	Result	Opponent
4	Black	Loss	Kato Yasuhiro	2053.17
5	White	Loss	Kawaai Hitoshi	2074.62
6	Black	Loss	Fukazawa Shingo	1818.24
39 Kanto Shineisen Tournament
Date	2022-04-10		Rating	1731.18
Round	Color	Result	Opponent
1	Black	Loss	Tanaka Shotaro	2303.67
2	White	Loss	Suzuki Yoshitaka	2019.92
3	White	Loss	Kishimoto Shogo	2159.91
4	Black	Loss	Fujikawa Masaki	2140.55
22 Renju Emperor Tournament Kanto area 1st round
Date	2021-11-21		Rating	1729.84
Round	Color	Result	Opponent
1	Black	Loss	Fujikawa Masaki	2168.10
2	Black	Loss	Tanizaki Ryusuke	2045.42
3	Black	Loss	Fujita Maiko	2378.55
4	Black	Loss	Kato Yasuhiro	2056.09
38 Kanto Championship
Date	2021-08-08		Rating	1733.14
Round	Color	Result	Opponent
4	Black	Loss	Li Haoyang	1980.90
5	White	Win	Okada Akihiro	1910.72
6	Black	Loss	Ono Takayuki	2407.81
38 Kanto Shineisen Tournament
Date	2021-04-11		Rating	1730.00
Round	Color	Result	Opponent
1	Black	Loss	Suenaga Daiki	2270.56
2	Black	Win	Shibata Satoru	1767.96
3	Black	Loss	Shimura Hiroki	2034.82
4	Black	Loss	Kawaai Hitoshi	2018.72
5	Black	Loss	Yoshimoto Yuta	2246.22
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	1726.85
Round	Color	Result	Opponent
A1	Black	Loss	Yoshimoto Yuta	2237.43
A2	White	Loss	Fujita Maiko	2368.84
A3	White	Loss	Saito Shigetoshi	2010.42
A4	White	Loss	Shibano Ryunosuke	2155.84
A5	White	Loss	Shimura Hiroki	2018.41
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	1727.51
Round	Color	Result	Opponent
1	Black	Loss	Inoue Fumiya	2469.66
2	Black	Loss	Maruyama Takashi	2050.59
3	White	Loss	Kishimoto Shogo	2181.73
4	Black	Loss	Maruta Koji	2116.30
37 Kanto Championship
Date	2020-08-10		Rating	1731.74
Round	Color	Result	Opponent
1	Black	Loss	Kato Yasuhiro	2083.95
2	Black	Loss	Ito Midori	1794.34
3	Black	Win	Shimura Hiroki	1968.81
4	Black	Loss	Kawaai Hitoshi	2015.72
5	Black	Loss	Maruyama Takashi	2047.63
6	Black	Loss	Fujita Maiko	2377.14