| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 101. Uhlmann vs L Alster |
| 1-0 | 39 | 1955 | Erfurt | A81 Dutch |
| 102. B Koch vs L Alster |
| ½-½ | 23 | 1955 | Erfurt | B05 Alekhine's Defense, Modern |
| 103. L Alster vs O Troianescu |
| ½-½ | 50 | 1955 | Erfurt | E53 Nimzo-Indian, 4.e3 |
| 104. L Alster vs A Kolarov |
| 0-1 | 35 | 1955 | Erfurt | E26 Nimzo-Indian, Samisch |
| 105. R Dworzynski vs L Alster |
| 1-0 | 43 | 1955 | Erfurt | B80 Sicilian, Scheveningen |
| 106. S Dittmann vs L Alster |
| 1-0 | 72 | 1955 | Erfurt | E43 Nimzo-Indian, Fischer Variation |
| 107. L Alster vs J Jezek |
| ½-½ | 28 | 1955 | Czechoslovak Championship | E10 Queen's Pawn Game |
| 108. M Betak vs L Alster |
| 0-1 | 39 | 1955 | Czechoslovak Championship | B02 Alekhine's Defense |
| 109. L Alster vs J Dolezal |
| 1-0 | 40 | 1955 | Czechoslovak Championship | E11 Bogo-Indian Defense |
| 110. F Pithart vs L Alster |
| ½-½ | 36 | 1955 | Czechoslovak Championship | A04 Reti Opening |
| 111. L Alster vs I Ivanco |
| 1-0 | 39 | 1955 | Czechoslovak Championship | A04 Reti Opening |
| 112. A Zaruba vs L Alster |
| ½-½ | 40 | 1955 | Czechoslovak Championship | A10 English |
| 113. L Alster vs M Ujtelky |
 | 1-0 | 25 | 1955 | Czechoslovak Championship | A43 Old Benoni |
| 114. J Kozma vs L Alster |
| 0-1 | 56 | 1955 | Czechoslovak Championship | B45 Sicilian, Taimanov |
| 115. L Alster vs J Fichtl |
| 0-1 | 59 | 1955 | Czechoslovak Championship | D37 Queen's Gambit Declined |
| 116. L Alster vs V Stulik |
| ½-½ | 42 | 1955 | Czechoslovak Championship | A53 Old Indian |
| 117. J Vesely vs L Alster |
| ½-½ | 20 | 1955 | Czechoslovak Championship | B07 Pirc |
| 118. L Alster vs Z Hostinsky |
| 1-0 | 43 | 1955 | Czechoslovak Championship | A46 Queen's Pawn Game |
| 119. J Florian vs L Alster |
| 0-1 | 44 | 1955 | Czechoslovak Championship | B05 Alekhine's Defense, Modern |
| 120. L Alster vs F Zita |
| ½-½ | 44 | 1955 | Czechoslovak Championship | C70 Ruy Lopez |
| 121. J Sefc vs L Alster |
| ½-½ | 21 | 1955 | Czechoslovak Championship | C56 Two Knights |
| 122. L Alster vs K Urbanec |
| ½-½ | 77 | 1955 | Czechoslovak Championship | E59 Nimzo-Indian, 4.e3, Main line |
| 123. J Rejfir vs L Alster |
| 1-0 | 75 | 1955 | Czechoslovak Championship | E80 King's Indian, Samisch Variation |
| 124. Dzieniszewski vs L Alster |
| 0-1 | 36 | 1956 | POL-CSR | A81 Dutch |
| 125. L Alster vs K Plater |
| ½-½ | 40 | 1956 | POL-CSR | A36 English |
Kibitzing
