Sun Tengyu

Back to main list

Graph

Data

Game List

Date	Rating	Color	Result	Opponent				Kifu
2025-06-14	3388	White	Loss	Wang Yuanjun	3358	♂		View game
2025-04-10	3389	Black	Loss	Shin Minjun	3544	♂		View game
2025-04-01	3390	Black	Win	Ye Changxin	3373	♂		View game
2025-02-28	3390	Black	Loss	Tuo Jiaxi	3516	♂		View game
2024-09-12	3394	Black	Win	Shi Yue	3538	♂		View game
2024-09-11	3394	White	Win	Zhou Ruiyang	3399	♂		View game
2023-12-06	3388	Black	Loss	Tao Xinran	3519	♂		View game
2023-11-13	3388	White	Loss	Chen Yunong	3449	♂		View game
2023-11-06	3388	Black	Win	Tang Weixing	3432	♂		View game
2022-11-23	3383	Black	Loss	Chen Qirui	3324	♂		View game
2022-11-22	3383	White	Win	Park Sangjin	3389	♂		View game
2022-11-20	3383	Black	Loss	Chen Yusen	3205	♂		View game
2022-11-15	3383	Black	Loss	Lee Changseok	3497	♂		View game
2022-07-18	3386	White	Loss	Zhang Ziliang	3353	♂		View game
2022-07-15	3386	White	Loss	Chen Qirui	3328	♂		View game
2022-07-14	3386	Black	Loss	Lee Changseok	3497	♂		View game
2022-07-13	3386	White	Win	Cai Jing	3338	♂		View game
2022-07-12	3386	Black	Win	Wang Xi	3474	♂		View game
2022-02-15	3392	Black	Loss	Wang Haoyang	3381	♂		View game
2021-09-02	3401	White	Win	Hua Chang	3178	♂		View game
2021-08-31	3402	White	Win	Han Yizhou	3454	♂		View game
2021-08-26	3402	Black	Win	Chen Bisen	3277	♂		View game
2021-08-24	3402	White	Win	Kou Zhengyan	3171	♂		View game
2021-03-18	3403	Black	Loss	Xu Jiayang	3594	♂		View game
2021-03-10	3404	White	Win	Jiang Qirun	3426	♂		View game
2020-12-18	3404	Black	Win	Cheng Jiaye	3312	♂		View game
2020-12-17	3404	Black	Win	Chen Yichun	3287	♂		View game
2020-12-16	3404	White	Loss	Shin Minjun	3567	♂		View game
2020-12-14	3404	Black	Win	Shin Minjun	3567	♂		View game
2020-12-13	3404	Black	Loss	Xie Ke	3586	♂		View game
2020-12-12	3404	Black	Loss	Peng Liyao	3508	♂		View game
2020-12-11	3404	Black	Loss	Xia Chenkun	3451	♂		View game
2020-12-09	3404	White	Win	Wang Shiyi	3339	♂		View game
2020-12-08	3404	Black	Loss	Tan Xiao	3518	♂		View game
2020-08-30	3403	Black	Loss	Tuo Jiaxi	3579	♂		View game
2020-08-29	3403	Black	Loss	Liao Yuanhe	3551	♂		View game
2020-08-27	3403	White	Loss	Fan Tingyu	3607	♂		View game
2020-08-26	3403	White	Win	Han Yizhou	3443	♂		View game
2020-03-18	3403	White	Loss	Zhang Tao	3474	♂		View game
2020-03-15	3403	Black	Win	Wang Zejin	3405	♂		View game
2020-03-11	3403	White	Loss	Yang Kaiwen	3509	♂		View game
2020-03-10	3403	Black	Loss	Ma Yichao	3361	♂		View game
2020-03-05	3403	Black	Win	Chen Hanqi	3337	♂		View game
2020-03-01	3403	Black	Loss	Yao Xiaotong	3172	♂		View game
2019-12-12	3406	Black	Loss	Chen Xian	3499	♂		View game
2019-11-06	3408	Black	Loss	Xia Chenkun	3468	♂		View game
2019-11-04	3408	White	Loss	Xia Chenkun	3468	♂		View game
2019-08-24	3414	White	Win	Xia Chenkun	3467	♂		View game
2019-08-12	3415	Black	Win	Tang Weixing	3500	♂		View game
2019-08-10	3415	White	Win	Fan Tingyu	3607	♂		View game
2019-06-10	3415	White	Win	Chen Xian	3489	♂		View game
2019-05-24	3415	White	Loss	Shin Minjun	3575	♂		View game
2019-05-06	3415	White	Loss	Li Qincheng	3530	♂		View game
2019-04-29	3415	Black	Win	Gan Siyang	3284	♂		View game
2019-03-28	3416	White	Win	Fan Yin	3496	♂		View game
2019-03-28	3416	White	Loss	Liao Xingwen	3373	♂		View game
2018-12-27	3416	White	Loss	Tong Mengcheng	3543	♂		View game
2018-12-26	3416	White	Win	Zhang Tao	3473	♂		View game
2018-12-23	3416	White	Win	Liu Zhaozhe	3271	♂		View game
2018-10-29	3415	Black	Loss	Han Yizhou	3441	♂		View game
2018-09-28	3415	Black	Loss	Yi Lingtao	3448	♂		View game
2018-09-12	3416	White	Win	Zhong Wenjing	3342	♂		View game
2018-09-10	3416	Black	Loss	Xia Chenkun	3449	♂		View game
2018-08-13	3416	White	Loss	Zhang Tao	3473	♂		View game
2018-08-06	3417	Black	Loss	Byun Sangil	3546	♂		View game
2018-06-25	3419	Black	Loss	Li Xuanhao	3518	♂		View game
2018-06-02	3420	White	Loss	Han Yizhou	3439	♂		View game
2018-05-21	3421	Black	Loss	Xie Erhao	3580	♂		View game
2018-05-14	3421	White	Win	Peng Liyao	3510	♂		View game
2018-05-09	3422	Black	Loss	Hu Yaoyu	3369	♂		View game
2018-04-25	3423	White	Win	Jiang Weijie	3575	♂		View game
2018-04-10	3424	Black	Loss	Peng Liyao	3509	♂		View game
2018-04-09	3424	White	Win	Ke Jie	3683	♂		View game
2018-03-30	3424	Black	Win	Huang Xin	3307	♂		View game
2018-03-26	3424	White	Loss	Li Qincheng	3547	♂		View game
2018-01-07	3428	Black	Loss	Zhao Chenyu	3505	♂		View game
2018-01-05	3428	Black	Win	Wang Shuo (b)	3134	♂		View game
2017-12-05	3429	Black	Win	Ding Hao	3514	♂		View game
2017-12-02	3429	Black	Win	An Dongxu	3390	♂		View game
2017-11-30	3429	White	Win	Li Xuanhao	3505	♂		View game
2017-11-22	3429	Black	Loss	Li Qincheng	3554	♂		View game
2017-11-10	3429	White	Loss	Choi Cheolhan	3493	♂		View game
2017-10-30	3430	Black	Win	Li Weiqing	3441	♂		View game
2017-10-28	3430	Black	Win	Meng Tailing	3467	♂		View game
2017-10-20	3429	Black	Win	Tong Mengcheng	3528	♂		View game
2017-10-08	3429	White	Loss	Lee Sedol	3533	♂		View game
2017-09-29	3429	White	Win	Zhou Ruiyang	3528	♂		View game
2017-09-13	3428	White	Loss	Niu Yutian	3361	♂		View game
2017-09-02	3427	White	Win	Peng Liyao	3498	♂		View game
2017-08-31	3427	Black	Loss	Tuo Jiaxi	3579	♂		View game
2017-08-14	3426	White	Loss	Li Xuanhao	3505	♂		View game
2017-08-11	3426	White	Loss	Rong Yi	3408	♂		View game
2017-08-09	3426	Black	Loss	Gu Li	3427	♂		View game
2017-07-19	3427	Black	Loss	Xie Ke	3515	♂		View game
2017-07-17	3427	White	Win	Liao Yuanhe	3486	♂		View game
2017-07-15	3427	Black	Loss	Li Weiqing	3429	♂		View game
2017-06-17	3427	Black	Win	Meng Tailing	3465	♂		View game
2017-05-18	3427	White	Loss	Zhao Chenyu	3482	♂		View game
2017-05-16	3427	Black	Win	Zhang Li	3324	♂		View game
2017-05-05	3427	White	Loss	Kang Dongyun	3494	♂		View game
2017-05-03	3427	Black	Loss	Tao Xinran	3477	♂		View game
2017-04-27	3427	Black	Win	Tuo Jiaxi	3574	♂		View game
2017-04-25	3427	Black	Loss	Shin Jinseo	3651	♂		View game
2017-02-22	3428	White	Loss	Fan Yin	3494	♂		View game
2017-01-13	3429	Black	Loss	Tao Xinran	3470	♂		View game
2016-12-28	3429	White	Loss	Gu Zihao	3577	♂		View game
2016-12-03	3430	White	Win	Liu Xing	3394	♂		View game
2016-12-01	3430	White	Win	Tang Weixing	3529	♂		View game
2016-11-24	3431	White	Win	Yang Xiaotian	3253	♂		View game
2016-11-24	3431	White	Win	Zhang Tao	3433	♂		View game
2016-11-21	3431	White	Win	Zhao Chenyu	3456	♂		View game
2016-11-18	3430	Black	Loss	Gu Li	3457	♂		View game
2016-11-04	3430	Black	Loss	Tao Xinran	3467	♂		View game
2016-10-25	3430	White	Win	Cao Xiaoyang	3355	♂		View game
2016-09-12	3430	White	Loss	Li Qincheng	3546	♂		View game
2016-09-10	3430	White	Loss	Choi Cheolhan	3524	♂		View game
2016-07-04	3431	Black	Win	Kang Dongyun	3511	♂		View game
2016-06-25	3431	White	Loss	Meng Tailing	3469	♂		View game
2016-06-21	3431	Black	Loss	Lin Shuyang	3154	♂		View game
2016-06-20	3431	White	Win	Zhao Chenyu	3438	♂		View game
2016-06-16	3431	White	Win	Wang Xi	3523	♂		View game
2016-06-06	3431	Black	Loss	Niu Yutian	3373	♂		View game
2016-06-03	3431	Black	Win	Tan Xiao	3548	♂		View game
2016-06-03	3431	Black	Loss	Yang Dingxin	3532	♂		View game
2016-05-22	3431	White	Win	Xu Jiayang	3488	♂		View game
2016-05-16	3431	Black	Loss	Zhou Ruiyang	3555	♂		View game
2016-05-09	3431	White	Win	Jiang Qirun	3304	♂		View game
2016-05-01	3431	Black	Loss	Cai Wenchi	3295	♂		View game
2016-04-30	3431	White	Win	Han Yizhou	3370	♂		View game
2016-04-13	3431	Black	Loss	Li Qincheng	3542	♂		View game
2016-04-03	3431	White	Loss	Choi Cheolhan	3514	♂		View game
2016-02-29	3432	Black	Loss	Wu Guangya	3417	♂		View game
2016-02-27	3432	Black	Win	Xu Jiayang	3473	♂		View game
2016-02-26	3432	Black	Win	Liao Yuanhe	3429	♂		View game
2016-02-25	3432	White	Win	Rui Naiwei	3200	♀		View game
2015-07-01	3430	Black	Loss	Li Xiangyu	3287	♂		View game
2015-05-04	3431	White	Loss	Zhou Heyang	3337	♂		View game
2015-05-03	3431	Black	Win	Gu Zihao	3533	♂		View game
2015-01-29	3433	White	Loss	Tang Weixing	3525	♂		View game
2015-01-27	3433	White	Win	Fan Tingyu	3522	♂		View game
2015-01-26	3433	White	Win	Hu Yaoyu	3423	♂		View game
2014-11-22	3432	White	Loss	Zhou Ruiyang	3547	♂		View game
2014-11-11	3432	Black	Loss	Han Yizhou	3330	♂		View game
2014-11-09	3433	White	Win	Peng Quan	3363	♂		View game
2014-10-31	3433	Black	Loss	Mao Ruilong	3392	♂		View game
2014-10-28	3433	White	Win	Hu Yaoyu	3419	♂		View game
2014-10-25	3433	Black	Loss	Dang Yifei	3409	♂		View game
2014-08-15	3435	White	Win	Gu Li	3518	♂		View game
2014-07-09	3436	White	Loss	Tao Xinran	3438	♂		View game
2014-07-05	3436	White	Loss	Fan Tingyu	3528	♂		View game
2014-06-28	3436	White	Win	Tuo Jiaxi	3542	♂		View game
2014-06-26	3436	White	Win	Wang Zheming	3157	♂		View game
2014-06-22	3436	White	Win	Xie Erhao	3456	♂		View game
2014-06-14	3437	White	Win	Ma Yichao	3279	♂		View game
2014-05-05	3436	Black	Loss	Tao Xinran	3438	♂		View game
2014-04-08	3437	Black	Loss	Zhou Ruiyang	3549	♂		View game
2014-04-06	3437	Black	Win	Tang Weixing	3525	♂		View game
2014-04-04	3437	Black	Win	Tuo Jiaxi	3536	♂		View game
2014-04-02	3437	Black	Win	Zhao Chenyu	3374	♂		View game
2014-04-01	3437	Black	Win	Luo Xihe	3314	♂		View game
2013-10-25	3428	Black	Win	Huang Yunsong	3466	♂		View game
2013-10-25	3428	White	Win	Li Xuanhao	3441	♂		View game
2013-10-22	3428	Black	Loss	Fan Yunruo	3456	♂		View game
2013-09-14	3425	Black	Loss	Zhou Hexi	3433	♂		View game
2013-07-03	3421	Black	Win	Tong Yulin	3333	♂		View game
2013-07-02	3421	White	Win	Chen Hao	3335	♂		View game
2013-07-02	3421	White	Win	Rong Yi	3274	♂		View game
2013-06-20	3420	Black	Loss	Xu Jiayang	3383	♂		View game
2013-06-07	3419	Black	Loss	Wang Xi	3528	♂		View game
2013-06-05	3419	Black	Win	He Xin	3184	♂		View game
2013-06-05	3419	Black	Loss	An Dongxu	3386	♂		View game
2013-04-13	3416	Black	Win	Fan Yunruo	3451	♂		View game
2013-04-11	3416	Black	Win	Zheng Miaoxin	3257	♂		View game
2013-04-10	3416	Black	Win	Li Kang	3329	♂		View game
2013-03-27	3414	Black	Win	Hu Yuefeng	3314	♂		View game
2013-03-26	3414	Black	Win	Qin Yuexin	3289	♂		View game
2013-03-13	3413	Black	Loss	Tan Xiao	3525	♂		View game
2013-02-27	3411	Black	Loss	Shin Minjun	3354	♂		View game
2012-12-08	3404	Black	Win	Zhong Wenjing	3422	♂		View game
2012-12-01	3403	White	Loss	Piao Wenyao	3456	♂		View game
2012-11-24	3402	Black	Loss	Zhang Tao	3401	♂		View game
2012-11-10	3401	White	Win	Lee Youngkoo	3435	♂		View game
2012-11-03	3400	White	Win	Fan Yunruo	3442	♂		View game
2012-10-21	3399	Black	Win	Li Kang	3347	♂		View game
2012-10-09	3397	Black	Loss	Jiang Weijie	3486	♂		View game
2012-09-30	3396	White	Win	Huang Chen	3250	♂		View game
2012-09-28	3396	Black	Loss	Mao Ruilong	3396	♂		View game
2012-09-08	3393	White	Loss	Wang Xi	3515	♂		View game
2012-09-01	3393	Black	Loss	Zhou Ruiyang	3539	♂		View game
2012-08-30	3393	White	Loss	Cho Hanseung	3469	♂		View game
2012-08-10	3391	Black	Loss	An Dongxu	3394	♂		View game
2012-07-25	3390	White	Loss	Zhou Ruiyang	3533	♂		View game
2012-07-24	3390	White	Win	Chen Yaoye	3547	♂		View game
2012-07-15	3389	Black	Loss	Kong Jie	3436	♂		View game
2012-07-13	3389	White	Loss	Piao Wenyao	3472	♂		View game
2012-07-09	3389	White	Loss	Niu Yutian	3397	♂		View game
2012-07-07	3389	White	Loss	Ke Jie	3488	♂		View game
2012-06-30	3389	Black	Loss	Yan Huan	3360	♂		View game
2012-06-28	3389	White	Win	Gu Zihao	3411	♂		View game
2012-06-28	3389	Black	Win	Wang Xi	3509	♂		View game
2012-06-27	3389	White	Win	Zhou Hexi	3444	♂		View game
2012-06-27	3389	Black	Win	Huang Chen	3246	♂		View game
2012-06-23	3388	White	Loss	Hu Yaoyu	3442	♂		View game
2012-06-14	3388	White	Win	Li Kang	3353	♂		View game
2012-06-09	3388	Black	Win	Huang Chen	3246	♂		View game
2012-05-30	3387	White	Win	Hu Yuefeng	3299	♂		View game
2012-05-07	3385	Black	Loss	Gu Li	3524	♂		View game
2012-04-30	3384	White	Win	Zhou Heyang	3354	♂		View game
2012-04-28	3384	Black	Loss	Peng Quan	3385	♂		View game
2012-04-02	3382	Black	Win	Zhang Li	3376	♂		View game
2012-02-09	3377	Black	Loss	Wang Xi	3492	♂		View game
2011-12-26	3373	Black	Loss	Li Kang	3351	♂		View game
2011-12-03	3371	White	Loss	Zhang Li	3377	♂		View game
2011-11-24	3371	Black	Win	Meng Tailing	3441	♂		View game
2011-11-05	3369	Black	Win	Zhong Wenjing	3415	♂		View game
2011-10-29	3368	White	Loss	Wang Xi	3482	♂		View game
2011-10-18	3368	Black	Win	Huang Chen	3258	♂		View game
2011-10-08	3367	White	Loss	Zhou Ruiyang	3491	♂		View game
2011-09-29	3366	Black	Win	Shi Yue	3519	♂		View game
2011-09-10	3364	White	Win	Mao Ruilong	3379	♂		View game
2011-09-06	3363	Black	Loss	Wang Yao	3302	♂		View game
2011-09-04	3363	White	Loss	Hu Yaoyu	3451	♂		View game
2011-07-14	3358	White	Loss	Mi Yuting	3487	♂		View game
2011-07-09	3358	Black	Win	Wang Lei (b)	3313	♂		View game
2011-06-25	3357	White	Loss	Cai Jing	3344	♂		View game
2011-06-09	3355	White	Loss	Tao Xinran	3430	♂		View game
2011-05-28	3355	Black	Loss	Tao Xin	3387	♂		View game
2011-05-21	3354	White	Loss	Peng Liyao	3470	♂		View game
2011-05-14	3354	Black	Loss	Tong Mengcheng	3355	♂		View game
2011-05-09	3354	White	Loss	Wu Guangya	3376	♂		View game
2011-05-07	3354	Black	Loss	Chang Hao	3357	♂		View game
2011-05-03	3354	White	Loss	Park Seunghwa	3288	♂		View game
2011-03-15	3356	White	Loss	Wang Haoyang	3368	♂		View game
2011-03-14	3356	White	Win	Tuo Jiaxi	3472	♂		View game
2011-02-13	3357	White	Loss	Zhang Li	3383	♂		View game
2010-12-18	3360	White	Win	Peng Quan	3402	♂		View game
2010-12-11	3360	White	Loss	Zhou Ruiyang	3481	♂		View game
2010-12-04	3360	White	Loss	Liao Xingwen	3353	♂		View game
2010-11-16	3361	Black	Win	Wang Xi	3465	♂		View game
2010-11-04	3362	White	Win	Zhu Yuanhao	3273	♂		View game
2010-10-30	3362	Black	Loss	Shi Yue	3463	♂		View game
2010-10-21	3362	White	Win	Huang Chen	3281	♂		View game
2010-10-16	3362	Black	Win	Lian Xiao	3435	♂		View game
2010-10-09	3362	White	Win	Chen Yaoye	3493	♂		View game
2010-09-06	3362	White	Loss	Wang Lei (s)	3349	♂		View game
2010-09-04	3362	White	Loss	Li Jie	3197	♂		View game
2010-08-22	3362	White	Loss	Qiu Jun	3462	♂		View game
2010-08-02	3363	Black	Loss	Park Yeonghun	3460	♂		View game
2010-07-15	3364	Black	Loss	Tang Weixing	3405	♂		View game
2010-07-10	3364	Black	Loss	Jiang Weijie	3459	♂		View game
2010-07-08	3364	Black	Win	Sun Li	3303	♂		View game
2010-07-03	3364	White	Loss	Liao Xingwen	3340	♂		View game
2010-06-19	3366	Black	Loss	Gu Li	3503	♂		View game
2010-06-12	3366	White	Win	Chang Hao	3396	♂		View game
2010-06-03	3367	Black	Loss	Shi Yue	3450	♂		View game
2010-05-29	3367	Black	Loss	Wang Haoyang	3363	♂		View game
2010-05-15	3369	White	Win	Mao Ruilong	3351	♂		View game
2010-05-08	3369	Black	Win	Zhong Wenjing	3413	♂		View game
2010-04-29	3370	Black	Win	Liu Xing	3403	♂		View game
2010-04-25	3370	Black	Win	Li Jie	3194	♂		View game
2010-04-02	3371	Black	Loss	Tan Xiao	3439	♂		View game
2010-03-29	3371	Black	Loss	Lee Sedol	3594	♂		View game
2010-03-04	3373	Black	Loss	Gu Lingyi	3441	♂		View game
2010-02-02	3375	White	Loss	Shi Yue	3444	♂		View game
2010-01-31	3375	White	Win	Liu Xing	3410	♂		View game
2010-01-29	3375	White	Win	Huang Yizhong	3288	♂		View game
2010-01-27	3375	White	Win	Tuo Jiaxi	3475	♂		View game
2009-12-28	3376	White	Loss	Liao Xingwen	3333	♂		View game
2009-12-09	3377	Black	Win	Hane Naoki	3332	♂		View game
2009-11-15	3378	White	Win	Zhong Wenjing	3405	♂		View game
2009-11-15	3378	Black	Win	Luo Xihe	3333	♂		View game
2009-11-15	3378	White	Loss	Tuo Jiaxi	3471	♂		View game
2009-09-28	3379	White	Win	Piao Wenyao	3436	♂		View game
2009-09-03	3379	Black	Win	Jiang Weijie	3452	♂		View game
2009-09-01	3379	White	Win	Gu Li	3518	♂		View game
2009-08-27	3379	White	Win	Wang Lei (b)	3328	♂		View game
2009-05-07	3372	White	Loss	Peng Liyao	3419	♂		View game
2009-05-05	3372	White	Win	Chen Hao	3255	♂		View game
2009-04-20	3371	Black	Loss	Kang Yootaek	3420	♂		View game
2009-04-02	3370	Black	Win	Peng Liyao	3418	♂		View game
2009-03-04	3369	Black	Loss	Zhang Wei	3258	♂		View game
2009-02-13	3368	Black	Loss	Meng Tailing	3388	♂		View game
2009-02-11	3368	White	Win	Mao Ruilong	3327	♂		View game
2009-02-08	3368	Black	Loss	Shi Yue	3435	♂		View game
2008-12-27	3367	Black	Win	Chen Xiaonan	3260	♂		View game
2008-12-24	3367	White	Win	Xie He	3450	♂		View game
2008-12-22	3366	White	Win	Liu Yunlong	3177	♂		View game
2008-12-20	3366	Black	Loss	Qiu Jun	3433	♂		View game
2008-12-13	3366	Black	Loss	Li Kang	3335	♂		View game
2008-12-04	3366	Black	Win	Li Jie	3196	♂		View game
2008-11-29	3365	Black	Win	Yang Xiaotian	3116	♂		View game
2008-11-22	3365	White	Win	Ma Xiaochun	3244	♂		View game
2008-11-15	3365	White	Win	Jiang Weijie	3431	♂		View game
2008-11-06	3364	Black	Loss	Xie He	3454	♂		View game
2008-11-01	3363	Black	Loss	Huang Yizhong	3323	♂		View game
2008-09-19	3361	Black	Loss	Li Haojie	3286	♂		View game
2008-05-24	3357	White	Loss	Feng Wei	3138	♂		View game
2008-05-15	3357	Black	Win	Zhong Wenjing	3391	♂		View game
2007-07-24	3350	Black	Win	Ye Jinjin	2889	♀		View game
2007-07-23	3350	White	Win	Zhang Ce	3132	♂		View game
2007-07-20	3350	Black	Win	Qin Yuexin	3146	♂		View game
2007-07-12	3349	White	Win	Chen Boya	2970	♂		View game
2007-07-11	3349	White	Win	Yan Ning	2997	♂		View game
2007-01-10	3340	White	Loss	Gu Lingyi	3352	♂		View game

Contact: Rémi Coulom. Powered by joedb, the C++ database.