- Labai, Zoltán
source: Gazeta Czestochowa
source: Gazeta Częstochowska
source-id: 2353
date: 1978
algebraic: 
  white: [Kf3, Qa8, Rh7, Rd1, Bf1, Be5, Sh4, Sf8]
  black: [Ke7, Bf7, Pf5, Pe3]
stipulation: "s#4"
solution: |
  "1.Sh4-g2 ? zugzwang.
      1...f5-f4 
          2.Be5-f6 + 
              2...Ke7*f6 
                  3.Qa8-d8 + 
                      3...Kf6-e5 
                          4.Rh7-h5 + 
                              4...Bf7*h5 # 
    but
      1...e3-e2  !
  
  1.Bf1-e2 ! zugzwang.
        1...f5-f4 
            2.Be5-d6 + 
                2...Ke7-f6 
                    3.Qa8-a1 + 
                        3...Kf6-g5 
                            4.Rd1-d5 + 
                                4...Bf7*d5 #"