v2.5.0

• In this release, the observation values for the terminated state in Hex have been changed (in #1288). There is no impact on the agent's learning or performance. In accordance with the versioning policy, the Hex environment version remains unchanged.
• player_id argument in Env.observeis deprecated

What's Changed

• [Docs] Update hex.md by @KazukiOhta in #1285
• [AlphaZero] Fix minor typo in train.py by @KazukiOhta in #1286
• [Hex] Extract game specific attributes by @sotetsuk in #1287
• [Hex] Extract logic functions by @sotetsuk in #1288
• [Hex] Create Game class by @sotetsuk in #1289
• [Hex] Enhance terminal computation by @sotetsuk in #1290
• [Hex] Use _player_order by @sotetsuk in #1291
• [API] Deprecate player_id in observe by @sotetsuk in #1292
• [Docs] Update README by @sotetsuk in #1293

Full Changelog: v2.4.2...v2.5.0

v2.4.2

What's Changed

• [Chess] Reduce _is_attacked call by @sotetsuk in #1260
• [CI] Cancel old workflows by @sotetsuk in #1266
• [Shogi] Extract game specific attributes by @sotetsuk in #1265
• [Shogi] Extract logic functions by @sotetsuk in #1269
• [Shogi] Separate core logic to _src/games/shogi.py by @sotetsuk in #1270
• [Shogi] Add Game class by @sotetsuk in #1271
• [Shogi] Unuse assets by @sotetsuk in #1272
• [Shogi] Make core singlefile by @sotetsuk in #1273
• [Shogi] move shogi_utils.py to experimental by @sotetsuk in #1274
• [Shogi] move INIT_LEGAL_ACTION_MASK by @sotetsuk in #1275
• [MinAtar] Fix CI by @sotetsuk in #1277
• [Backgammon] unuse clip by @sotetsuk in #1278
• [Test] Remove .svg files from assets by @sotetsuk in #1280
• [CI] Add old Jax tests by @sotetsuk in #1279
• [Test] Enhance test experience by @sotetsuk in #1281
• [MinAtar] Update submodule by @sotetsuk in #1282
• [Shogi] Move reward and terminal by @sotetsuk in #1276
• Python3.13 support by @sotetsuk in #1283

Full Changelog: v2.4.1...v2.4.2

v2.4.1

What's Changed

• [Visualization] Remove file name assertion by @sotetsuk in #1256
• [Chess] speed up _is_attacked by @sotetsuk in #1257
• [Hex] Modify visualizer.py to handle TypeError when displaying the initial state of hex. by @KazukiOhta in #1261
• [Release] v2.4.1 by @sotetsuk in #1262

Full Changelog: v2.4.0...v2.4.1

v2.4.0

TL;DR

• Superko rule change in Go (v0 -> v1)
• Internal refactor in Chess

What's Changed

• [Go] Use hash by @sotetsuk in #1224
• [Go] internal refactor by @sotetsuk in #1225
• [Chess] Separate Chess specific attributes by @sotetsuk in #1226
• [Chess] Extract game logic functions by @sotetsuk in #1227
• [Chess] Move game logic to _src/games by @sotetsuk in #1228
• [Chess] Add game class by @sotetsuk in #1229
• [Chess] Skip _flip in checking mate by @sotetsuk in #1230
• [Chess] Reduce _is_checked call by @sotetsuk in #1231
• [Chess] Summarize _is_checked calls by @sotetsuk in #1232
• [Chess] Enhance CAN_MOVE by @sotetsuk in #1234
• [Chess] Remove cached info by @sotetsuk in #1233
• [Chess] Simplify legal_underpromotions by @sotetsuk in #1236
• [Chess] Remove _is_pseudo_legal by @sotetsuk in #1237
• [Chess] Tidy _apply_move by @sotetsuk in #1238
• [Chess] Tidy comments by @sotetsuk in #1239
• [Chess] Simplify hash by @sotetsuk in #1235
• [Chess] Reduce lines by @sotetsuk in #1240
• [Chess] Use numpy in to_fen by @sotetsuk in #1241
• [CI] Remove type check from CI by @sotetsuk in #1244
• [Chess] Remove chess_utils.py by @sotetsuk in #1243
• [Chess] Simplify castling attributes by @sotetsuk in #1245
• [Chess] Simplify hash implementation by @sotetsuk in #1246
• [Chess] Tidy by @sotetsuk in #1247
• [Chess] Rename turn to color by @sotetsuk in #1248
• [Chess] Tidy by @sotetsuk in #1250
• [Go] Tidy by @sotetsuk in #1249
• [Chess] use from jax import lax by @sotetsuk in #1251
• [Go] Remove hash attribute by @sotetsuk in #1252

Full Changelog: v2.3.0...v2.4.0

v2.3.0

What's Changed

• [README] Enhance link to docs by @sotetsuk in #1214
• [README] Add other JAX envs by @sotetsuk in #1216
• [Animal Shogi] Dropping PAWN on the final rank is legal by @KazukiOhta in #1218
• [MinAtar] Fix svg visualization by @sotetsuk in #1219
• [AnimalShogi] Update version by @sotetsuk in #1221
• [CI] Drop py3.8 and test py3.9 by @sotetsuk in #1222
• [Release] v.2.3.0 by @sotetsuk in #1220

Full Changelog: v2.2.0...v2.3.0

v2.2.0

What's Changed

• [Animal Shogi] Modify the visualizer of animal shogi. by @KazukiOhta in #1208
• [Animal Shogi] Modify the move of GOLD in animal_shogi.py by @KazukiOhta in #1209
• Update README.md by @KazukiOhta in #1211
• [Animal Shogi] Update documents by @sotetsuk in #1212

Full Changelog: v2.1.2...v2.2.0

v2.1.2

What's Changed

• [KuhnPoker] Update docs by @sotetsuk in #1197
• [Backgammon] Fix deprecated a_min and a_max by @sotetsuk in #1201
• [LeducHoldem] suppress warnings in tests by @sotetsuk in #1202
• [MinAtar] Restore MinAtar tests by @sotetsuk in #1203
• [MinAtar] make minatar submodule by @sotetsuk in #1204
• [BridgeBidding] Update version by @sotetsuk in #1206

Full Changelog: v2.1.1...v2.1.2

v2.1.1

Upgrade KuhnPoker to v1

v2.1.0

There is a breaking change in Kuhn Poker in #1171
There are several internal changes in Go, Tic-tac-toe, and ConnectFour.

What's Changed

• [Example] Use optax policy loss by @sotetsuk in #1106
• [Example] Extract loss input computation by @sotetsuk in #1107
• [Example] Add MCTS example by @sotetsuk in #1109
• [CI] Hotfix haiku install errors by @sotetsuk in #1114
• [CI] Suppress codecov by @sotetsuk in #1110
• [CI] Simplify GitHub Action file by @sotetsuk in #1112
• [colab] Fix link to colab by @sotetsuk in #1117
• Update .gitignore by @sotetsuk in #1118
• [Docs] Add JaxMARL to README by @sotetsuk in #1120
• [CI] Fix build by @sotetsuk in #1121
• [Mahjong] Reduce compilation/run time of _pass() by @OkanoShinri in #1122
• Add XLand-MiniGrid to README by @Howuhh in #1124
• [Docs] Add notes in AZ readme by @sotetsuk in #1125
• [Tidy] Remove unnecessary comments by @sotetsuk in #1126
• [Docs] Reorder README badges by @sotetsuk in #1128
• [Go] Separate go specific attributes by @sotetsuk in #1129
• [Go] Extract game logic functions by @sotetsuk in #1130
• [Go] Move game logic to _src/games by @sotetsuk in #1131
• [Go] Refactor naming by @sotetsuk in #1132
• [Go] Add new logic class by @sotetsuk in #1133
• [Go] Use NamedTuple instead of dataclass by @sotetsuk in #1134
• [Mahjong] Add some comments for development by @OkanoShinri in #1123
• [Format] Use line_length = 120 by @sotetsuk in #1136
• [Go] Tidy by @sotetsuk in #1137
• [Go] make color optional in observe by @sotetsuk in #1138
• [Go] Fix to use history_length by @sotetsuk in #1139
• [Go] rename terminal_values to returns by @sotetsuk in #1140
• [Game API] Add __init__.py by @sotetsuk in #1142
• [Docs] UPDATE README.md by @sotetsuk in #1143
• [Protocol] Add TwoPlayerPerfectInfoGame by @sotetsuk in #1144
• [Go] Tidy signatures by @sotetsuk in #1145
• [TicTacToe] Separate TicTacToe specific attributes by @sotetsuk in #1146
• [Version] 2.1.0-rc0 by @sotetsuk in #1147
• [TicTacToe] Split game specific methods by @sotetsuk in #1148
• [TicTacToe] Extract games/tic_tac_toe.py by @sotetsuk in #1149
• [Go, TicTacToe] Align step functions by @sotetsuk in #1150
• [ConnectFour] Separate game specific attributes by @sotetsuk in #1151
• [ConnectFour] Separate game specific methods by @sotetsuk in #1152
• [ConnectFour] Extract games/connect_four.py by @sotetsuk in #1153
• [Go] Add step_count by @sotetsuk in #1155
• [Go] Move max_termination_steps to games/go.py by @sotetsuk in #1156
• [Go] Refactor using _player_order by @sotetsuk in #1157
• [Go] Fix size attribute jittable by @sotetsuk in #1158
• [Go] Tidy Go environment by @sotetsuk in #1160
• [Game] Rename returns to rewards by @sotetsuk in #1161
• [Format] Apply update black format by @sotetsuk in #1168
• Add from_fen/to_fen to pgx.experimental.chess by @sotetsuk in #1167
• [Chess] Accelerate chess_utils.py import (jnp => np) by @Akulen in #1170
• [Hotfix] Restore CI by @sotetsuk in #1175
• [Kuhn Poker] Simplify action space by @Egiob in #1171
• [README] Enhance citation information by @sotetsuk in #1181
• Bump jinja2 from 3.1.2 to 3.1.3 in /docs by @dependabot in #1182
• [Go] Extract from_sgf by @sotetsuk in #1184
• Bump jinja2 from 3.1.3 to 3.1.4 in /docs by @dependabot in #1185
• [Chess] fix dummy observation by @bkorpan in #1186
• [Bridge] Enhance DDS dataset by @sotetsuk in #1187
• Replace deprecated jax.tree_map function with jax.tree_util.tree_map by @KazukiOhta in #1188
• [CI] Remove Mahjong from CI by @sotetsuk in #1189
• Bump zipp from 3.18.0 to 3.19.1 in /docs by @dependabot in #1190
• [BridgeBidding] Improve efficiency in using dds results by @sotetsuk in #1191
• [Docs] Add https://github.com/sotetsuk/make-dds-dataset to bridge docs by @sotetsuk in #1194
• [Release] v2.1.0 by @sotetsuk in #1195

New Contributors

• @Howuhh made their first contribution in #1124
• @Akulen made their first contribution in #1170
• @Egiob made their first contribution in #1171
• @bkorpan made their first contribution in #1186
• @KazukiOhta made their first contribution in #1188

Full Changelog: v2.0.1...v2.1.0

v2.0.1

What's Changed

• [Colab] Adjust to API v2 by @sotetsuk in #1096
• [Docs] Update AlphaZero example docs by @sotetsuk in #1097
• [Example] Adjust PPO example to API v2 by @sotetsuk in #1098
• [Docs] Update AlphaZero training example docs by @sotetsuk in #1099
• [Docs] Update README by @sotetsuk in #1100
• [experimental] Add error message to auto_reset by @sotetsuk in #1102
• [experimental] Add error message to act_randomly by @sotetsuk in #1101
• [v2] Add error messages for wrong usage by @sotetsuk in #1103

Full Changelog: v2.0.0...v2.0.1