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Zero game

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94:(in which each move may be played by either player) and asserts that every such game has an equivalent Sprague–Grundy value, a "nimber", which indicates the number of pieces in an equivalent position in the game of 233: 56:{0|0}, which is a first-player win since either player must (if first to move in the game) move to a zero game, and therefore win. 87: 81: 34: 46: 109:, but has value 0, since it is a second-player winning situation whatever the first player plays. It is not a 42: 98:. All second-player win games have a Sprague–Grundy value of zero, though they may not be the zero game. 238: 204: 133: 53: 26:
This article is about combinatorial game theory. For the novel entitled "The Zero Game", see
45:, the first player automatically loses, and it is a second-player win. The zero game has a 200: 208: 91: 227: 20: 27: 110: 69: 41:
is the game where neither player has any legal options. Therefore, under the
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Winning Ways for your mathematical plays, Volume 1: Games in general
49:
of zero. The combinatorial notation of the zero game is: { | }.
102: 95: 65: 105:with two identical piles (of any size) is not the 215:(corrected ed.), Academic Press, p. 44 8: 128: 126: 113:because first player has no winning option. 52:A zero game should be contrasted with the 122: 187: 175: 163: 151: 64:Simple examples of zero games include 7: 72:diagram with nothing drawn on it. 16:Game where both players can't move 14: 1: 140:, Academic Press, p. 72 255: 79: 25: 18: 234:Combinatorial game theory 35:combinatorial game theory 19:Not to be confused with 88:Sprague–Grundy theorem 82:Sprague–Grundy theorem 43:normal play convention 138:On numbers and games 101:For example, normal 76:Sprague-Grundy value 47:Sprague–Grundy value 201:Berlekamp, Elwyn R. 68:with no piles or a 246: 218: 216: 197: 191: 185: 179: 173: 167: 161: 155: 149: 143: 141: 130: 254: 253: 249: 248: 247: 245: 244: 243: 224: 223: 222: 221: 209:Guy, Richard K. 205:Conway, John H. 199: 198: 194: 186: 182: 174: 170: 162: 158: 150: 146: 132: 131: 124: 119: 92:impartial games 84: 78: 62: 31: 24: 17: 12: 11: 5: 252: 250: 242: 241: 236: 226: 225: 220: 219: 192: 180: 168: 156: 144: 121: 120: 118: 115: 80:Main article: 77: 74: 61: 58: 15: 13: 10: 9: 6: 4: 3: 2: 251: 240: 237: 235: 232: 231: 229: 214: 210: 206: 202: 196: 193: 189: 188:Conway (1976) 184: 181: 177: 176:Conway (1976) 172: 169: 165: 164:Conway (1976) 160: 157: 153: 152:Conway (1976) 148: 145: 139: 135: 134:Conway, J. H. 129: 127: 123: 116: 114: 112: 108: 104: 99: 97: 93: 89: 83: 75: 73: 71: 67: 59: 57: 55: 50: 48: 44: 40: 36: 29: 22: 21:Zero-sum game 212: 195: 183: 171: 159: 147: 137: 106: 100: 85: 63: 51: 38: 32: 28:Brad Meltzer 90:applies to 239:0 (number) 228:Categories 117:References 111:fuzzy game 70:Hackenbush 178:, p. 124. 154:, p. 122. 107:zero game 54:star game 39:zero game 211:(1983), 190:, p. 73. 166:, p. 87. 136:(1976), 60:Examples 37:, the 86:The 103:Nim 96:nim 66:Nim 33:In 230:: 207:; 203:; 125:^ 217:. 142:. 30:. 23:.

Index

Zero-sum game
Brad Meltzer
combinatorial game theory
normal play convention
Sprague–Grundy value
star game
Nim
Hackenbush
Sprague–Grundy theorem
Sprague–Grundy theorem
impartial games
nim
Nim
fuzzy game


Conway, J. H.
Conway (1976)
Conway (1976)
Conway (1976)
Conway (1976)
Berlekamp, Elwyn R.
Conway, John H.
Guy, Richard K.
Categories
Combinatorial game theory
0 (number)

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