Patrick+Schoo

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 * Home * People * Patrick Schoo**

a Dutch computer scientist, and early endgame database researcher. He already made his project thesis on that topic at [|The Hague University of Applied Sciences] in 1988, and continued his studies while affiliated with the University of Limburg, where he also worked with Victor Allis to solve [|Qubic] applying Proof-number search.
 * Patrick Schoo**,

=Confirming Troitsky= Co-authored by Bob Herschberg and Jaap van den Herik at the WCCC 1989 Workshop //New Directions in Game-Tree Search//, Schoo elaborated on verifying and codifying strategies of the five piece endgame of two knights versus rook pawn KNNKP(h). During the generation of appropriate tablebases complete knowledge is obtained by an exhaustive enumeration via full-width [|backward chaining], also dubbed retrograde analysis. Schoo et al. confirmed two statements of [|Alexey Troitsky], statement A, that the position is always a win for White provided the pawn no further down than the  [|Troitsky line] (h4-h7) is safely blocked by a knight, and statement B, for the blocked pawn on h3, that the game is drawn whenever the black king is within the [|Troitsky zone]. code Troitsky line       Troitsky zone

. . . . . . . .     1 1 1 1 . . . . . . . . . . . .      1 1 1 1 1 . . . . 1 . . . . 1 .      1 1 1 1 1 1 . . . . 1 . . 1 . .      . 1 1 1 1 1 . . 1 . . 1 1 . . 1      . . 1 1 1 1 . . . . . . . . . .      . . . . . . . p .. . . . . . .     . . . . . . . N .. . . . . . .     . . . . . . . . code

=Selected Publications=
 * Patrick Schoo (**1988**). //Analyse van een schaakeindspel-database//. Project thesis, Haagse Hogeschool, Sector Techniek, Studierichting Hogere Informatica
 * Bob Herschberg, Jaap van den Herik, Patrick Schoo (**1989**). //Verifying and Codifying Strategies in a Chess Endgame//. Workshop on New Directions in Game-Tree Search
 * Bob Herschberg, Jaap van den Herik, Patrick Schoo (**1989**). //Verifying and Codifying Strategies in the KNNKP(h) Endgame//. ICCA Journal, Vol. 12, No. 3, [|pdf]
 * Bob Herschberg, Jaap van den Herik, Patrick Schoo (**1990**). //Verifying and Codifying Strategies in a Chess Endgame//. Computers, Chess, and Cognition
 * Victor Allis, Patrick Schoo (**1992**). //Qubic Solved Again//. Heuristic Programming in Artificial Intelligence 3: The Third Computer Olympiad

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