Fairy chess composition
 No.1498 A & B  Sébastien Luce (France) Original Fairy problems JF-2020/I: January – June’2020

Definition: (click to show/hide)

 No.1498 A & B Sébastien Luce France original – 19.04.2020 Dedicated to Themis Argirakopoulos White Kd5 Black Ke7 Sd4 Pc7d7d6 h=4.5                                       (1+5) Masand White Kd4 Ph3 Black Kb5 Qd6 Bb6d5 Sc5b4 Pc7h7 h=3                                      (2+8) Masand Generalised Solution: (click to show/hide) 1...Kd5-c4 2.d6-d5 + Kc4-c5 3.Sd4-e6[c7=w] + Kc5*d5 { } 4.Se6-d8 c7*d8=Q[d7=w] + 5.Ke7*d8 Kd5-d6 = { (C+ by Popeye 4.83 & WinChloe 3.47)} This problem shows a typical idea in Masand. A black Pawn on its second rank becomes white, following a check, then is promoted on the eighth rank. The Zajic theme is also present : A piece (here a Knight) plays on a square x (here d8), is captured on x by a piece(Pawn ç7), this piece is captured again by the King. (Author) Solution: (click to show/hide) 1.Bd5-f3[c5=w][b6=w][c7=w]+ Kd4-c3 2.Sb4-c2 c7-c8=S { } 3.Qd6-d3[c2=w][f3=w][h7=w]+ Kc3*d3= { (C+ by WinChloe 3.47)} A short solution, but with many effects : 1.Bf3+! discovered check provokes three changes of colour of pieces : Knight ç5, Bishop b6 and Pawn ç7 become white. It would be not the case in simple Masand (only direct checks provoke change of colour of pieces). But 1.Bf3+! also "cuts" the third rank to prepare check on d3 by Queen without to change the colour of h3 Pawn. Pawn ç7 is then promoted as white (like with the T) and to Knight this time ! Final stalemate is realised only by minor pieces. (Author)

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