The explanation seem right - but the bid ??

[thorvald]

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CThorvald%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C2SAQ9HA4DAQJT5C983%2CS65HQ985DK642CT72%2CSJ83HKJ76D3CAKJ64%2CSKT742HT32D987CQ5%7Csv%7C0%7Cah%7CBoard%208%7Cmb%7CP%7Cmb%7C1C%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21C%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1D%7Can%7COne%20over%20one%20--%204%2B%20%21D%3B%206%2B%20total%20points%7Cmb%7CP%7Cmb%7C1H%7Can%7C3%2B%20%21C%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%7Cmb%7CP%7Cmb%7C1S%21%7Can%7CFourth%20suit%20forcing%20--%204%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C2D%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3D%7Can%7C5%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3S%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%203%2B%20%21S%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%7Cmb%7CP%7Cmb%7C3N%7Can%7C5%2B%20%21D%3B%204-%20%21H%3B%203-%20%21S%3B%2014-21%20HCP%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CS6%7Cpc%7CS3%7Cpc%7CST%7Cpc%7CSQ%7Cpc%7CC3%7Cpc%7CC2%7Cpc%7CCK%7Cpc%7CC5%7Cpc%7CD3%7Cpc%7CD7%7Cpc%7CDT%7Cpc%7CDK%7Cpc%7CS5%7Cpc%7CS8%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CC9%7Cpc%7CC7%7Cpc%7CCJ%7Cpc%7CCQ%7Cpc%7CS7%7Cpc%7CS9%7Cpc%7CD2%7Cpc%7CSJ%7Cpc%7CCA%7Cpc%7CD9%7Cpc%7CC8%7Cpc%7CCT%7Cpc%7CC6%7Cpc%7CS4%7Cpc%7CD5%7Cpc%7CD6%7Cmc%7C11%7C]399|300[/hv]

 

1♠ is 4. suit GF, so bidding 2♣ seems obvious

[michel444]

[hv=url=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7CThorvald%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C2SAQ9HA4DAQJT5C983%2CS65HQ985DK642CT72%2CSJ83HKJ76D3CAKJ64%2CSKT742HT32D987CQ5%7Csv%7C0%7Cah%7CBoard%208%7Cmb%7CP%7Cmb%7C1C%7Can%7CMinor%20suit%20opening%20--%203%2B%20%21C%3B%2011-21%20HCP%3B%2012-22%20total%20points%7Cmb%7CP%7Cmb%7C1D%7Can%7COne%20over%20one%20--%204%2B%20%21D%3B%206%2B%20total%20points%7Cmb%7CP%7Cmb%7C1H%7Can%7C3%2B%20%21C%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%7Cmb%7CP%7Cmb%7C1S%21%7Can%7CFourth%20suit%20forcing%20--%204%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C2D%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3D%7Can%7C5%2B%20%21D%3B%203-%20%21S%3B%2012%2B%20HCP%3B%2013%2B%20total%20points%3B%20forcing%20to%203N%7Cmb%7CP%7Cmb%7C3S%7Can%7C3%2B%20%21C%3B%203%2B%20%21D%3B%204%2B%20%21H%3B%203%2B%20%21S%3B%2011%2B%20HCP%3B%2012-18%20total%20points%3B%20forcing%7Cmb%7CP%7Cmb%7C3N%7Can%7C5%2B%20%21D%3B%204-%20%21H%3B%203-%20%21S%3B%2014-21%20HCP%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CS6%7Cpc%7CS3%7Cpc%7CST%7Cpc%7CSQ%7Cpc%7CC3%7Cpc%7CC2%7Cpc%7CCK%7Cpc%7CC5%7Cpc%7CD3%7Cpc%7CD7%7Cpc%7CDT%7Cpc%7CDK%7Cpc%7CS5%7Cpc%7CS8%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CC9%7Cpc%7CC7%7Cpc%7CCJ%7Cpc%7CCQ%7Cpc%7CS7%7Cpc%7CS9%7Cpc%7CD2%7Cpc%7CSJ%7Cpc%7CCA%7Cpc%7CD9%7Cpc%7CC8%7Cpc%7CCT%7Cpc%7CC6%7Cpc%7CS4%7Cpc%7CD5%7Cpc%7CD6%7Cmc%7C11%7C]399|300[/hv]

 

1♠ is 4. suit GF, so bidding 2♣ seems obvious

LOL what is obvious to you is not always what the program find

IDK how the program is writen but you may get funny result

[michel444]

think about this you write an order to find the opening bid

you need 1 what is my total HCP or my Total trick

you must go upside down

first can ibid 2c ?

no

can i bid 2nt?

no

can i bid 1nt ?

yes if the hand is balanced

check if hand is balnced....

not balanced

can i bid 1 spade ?

no

can i bid 1 heart

no

....

pass

the next bid have even more option and here may come some shortcut adding anumber to last bid to get the """"RIGHT"""" bid