{re ICGA_J Vol. 37-1, 'Chess Endgame News': v1 of 2014-08-08}



{maxDTM50 positions/lines and further DTM50 examples}

[White "KQ"]
[Black "KRB"]
[Result "1-0"]
[Date "2014.07.29"]
[Event "5m, 2-3m, KQKRB, GBR 1330.00, maxDTM50,0 2-3m_P-less l&w: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "K4b2/8/8/8/6Q1/8/k3r3/8 b - - 0 1"]
[PlyCount "140"]

{a maxDTM50,0 btm 2-3m_P-less btm loss: dtc/m/m50/z = -41/-70/-70/-41m} 1... Re8+ 
{a maxDTM50,0 wtm 2-3m_P-less wtm win: dtc/m/m50/z = 41/70/70/41m} 2. Ka7
Bc5+ 3. Ka6 Ka3 4. Qh5 Re6+ 5. Kb5 Be3 6. Kc4 Rc6+ 7. Kd3 Bb6 8. Qb5 Rh6 9. Kd2
Rh2+ 10. Kd1 Rh1+ 11. Ke2 Rh2+ 12. Kf1 Rh1+ 13. Kg2 Rh6 14. Qd3+ Ka4 15. Qd7+
Ka3 16. Kg3 Bg1 17. Qe7+ Kb3 18. Qf7+ Kc2 19. Qc4+ Kb2 20. Kg2 Rg6+ 21. Kf1 Rg7
22. Qb4+ Kc2 23. Ke2 Rg2+ 24. Ke1 Rg7 25. Qc4+ Kb2 26. Qc6 Rg3 27. Kd2 Be3+ 28.
Kd1 Bg1 29. Qc2+ Ka3 30. Qc4 Kb2 31. Qe2+ Kb3 32. Qb5+ Ka3 33. Kc2 Rg2+ 34. Kb1
Rg4 35. Qa5+ Kb3 36. Qe1 {SZ(50)-: Qd5+"} Rg7 37. Qe6+ Kb4 38. Qe4+ Ka3 39. Qf3+ Ka4 40. Qf1
Rb7+ 41. Ka2 Rd7 42. Qxg1 {KQKR: dtc/m/z = -24/-29/-24m} Kb5 43. Kb3 Rd3+ 44.
Kc2 Rd6 45. Kc3 Rc6+ 46. Kd4 Rd6+ 47. Ke5 Rd8 48. Qg5 Rd3 49. Ke4+ Kc4 50. Qf6
Rc3 51. Qb6 Rc2 52. Qc6+ Kb3 53. Qb5+ Kc3 54. Ke3 Rb2 55. Qc5+ Kb3 56. Kd3 Ka4
57. Qd6 Kb3 58. Qf6 Rb1 59. Qc3+ Ka2 60. Qe5 {SZ(50)-: Qa5+'} Kb3 61. Qd5+ Kb2 
62. Kd2 Rg1 {SZ(50)+: Ra1'} 63. Qd4+ Kb3 64. Qxg1 {KQK: dtx = -7m} Kc4 
65. Qg5 Kd4 66. Kc2 Ke4 67. Kc3 Kf3 68. Kd3 Kf2 69. Qg4 Kf1 70. Ke3 Ke1 
71. Qg1# {Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTC/Z(50) EGTs} *


[White "KQ"]
[Black "KRB"]
[Result "1-0"]
[Date "2014.07.29"]
[Event "5m, 2-3m, KQKRB, GBR 1330.00, maxDTM50,pc 2-3m_P-less l&w: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "K4b2/8/8/8/6Q1/8/k3r3/8 b - - 11 1"]
[PlyCount "144"]

{a maxDTM50,pc btm KQKRB loss: dtc/m/m50/z = -41/-70/-72/-41m} 1... Re8+ 
{a maxDTM50,pc wtm KQKRB win: dtc/m/m50/z = 41/70/72/41m} 2. Ka7 Bc5+ 3. Ka6 Ka3
4. Qh5 Re6+ 5. Kb5 Be3 6. Kc4 Rc6+ 7. Kd3 Bb6 8. Qb5 Rh6 9. Kd2 Rh2+ 10. Kd1
Rh1+ 11. Ke2 Rh2+ 12. Kf1 Rh1+ 13. Kg2 Rh6 14. Qd3+ Ka4 15. Qd7+ Ka3 16. Kg3
Bg1 17. Qe7+ Kb3 18. Qf7+ Kc2 19. Qc4+ Kb2 20. Kg2 Rg6+ 21. Kf1 Rg7 22. Qb4+
Kc2 23. Ke2 Rg2+ 24. Ke1 Rg7 25. Qc4+ Kb2 26. Qc6 Rg3 27. Kd2 Be3+ 28. Kd1 Bg1
29. Qc2+ Ka3 30. Qc4 Kb2 31. Qe2+ Kb3 32. Qb5+ Ka3 33. Kc2 Rg2+ 
34. Kb1 Rg4 {and now, annotation and moves differ from the 'pc = 0' line above} 
35. Qa5+ Kb3 36. Qd5+ {SM-: Qe1"} Kb4 37. Qe6 Rg5 {SZ(50)+: Rg7"} 38. Qe7+ Rc5 
39. Qe1+ Rc3 40. Qxg1 {KQKR: dtc/m/z = -28/-33/-28m} Kc4 41. Kb2 Rb3+ 42. Kc2 Rc3+ 43. Kd2 Rd3+ 44.
Ke2 Rd4 45. Ke3 Rd6 46. Qg7 Kd5 47. Qd4+ Ke6 48. Qc4+ Ke5 49. Qe4+ Kf6 50. Kf4
Re6 51. Qb4 Kf7 52. Qb7+ Ke8 53. Kf5 Rd6 54. Ke5 Rd7 55. Qb3 Ke7 56. Qg8 Rc7
57. Qg7+ Kd8 58. Qf8+ Kd7 59. Kd5 Rb7 60. Qf7+ Kc8 61. Qe8+ Kc7 62. Kc5 Ra7 63.
Qe5+ Kb7 64. Kb5 Ra2 {SZ(50)+: Ra8'} 65. Qd5+ Kc7 66. Qxa2 {KQK: dtx = -7m} Kd6 67. Qe2 Kd5 68.
Kb6 Kd4 69. Kc6 Kc3 70. Kc5 Kb3 71. Qd2 Ka3 72. Kc4 Ka4 73. Qa2# 
{Huntington DTM50, Nalimov and MB 'Nalimov' DTC/Z(50) EGTs} 1-0


[White "KQ"]
[Black "KRP"]
[Result "1-0"]
[Date "2014.07.31"]
[Event "5m, 2-3m, KQKRP, GBR 1300.01, maxDTM50,0 2-3m_P-ful w&l: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "8/8/1pk5/K7/8/8/1r6/4Q3 w - - 0 1"]
[PlyCount "195"]

{a maxDTM50,0 2-3m_P-ful wtm win: dtc/m/m50/z = 69/97/98/39} 1. Ka4 
{a maxDTM50,0 2-3m_P-ful btm loss: dtc/m/m50/z = -68/-96/-97/-38m} Ra2+ 
2. Kb4 Ra7 3. Kc3 Ra3+ 4. Kd2 Ra2+ 5. Ke3 Ra3+ 6. Kf2 Ra2+ 7. Kf1 Ra5 8. Qe4+ Kc7
9. Qe7+ Kc6 {SZ(50)+: Kb8"} 10. Ke2 Rc5 11. Kd3 b5 {KQKRP(b5): dtc/m/z(50) = 58/86/37m} 
12. Qe8+ Kb7 13. Qd7+ Kb6 14. Qd8+ Kc6 15.
Kd4 Rc4+ 16. Ke5 Ra4 17. Qb8 Rc4 18. Ke6 Rd4 19. Ke7 Rd7+ 20. Kf8 Rd4 21. Ke8
Kc5 22. Qe5+ Kc4 23. Qe6+ {SZ(50)-: Qe2+"} Kc3 24. Qe3+ Kc4 25. Qc1+ Kb4 26. Qb2+ Kc5 27. Qc3+
Rc4 28. Qa5 Rd4 29. Ke7 Kc6 30. Qa6+ Kc5 31. Qa7+ Kc4 32. Qa2+ Kb4 33. Qb2+ Kc5
34. Qf2 Kc4 35. Ke6 Rd3 36. Qc2+ Rc3 37. Qe4+ {SM-: Qa2+"} Kc5 38. Qe5+ Kb4 39. Qe1 Kb3 40.
Qb1+ Ka4 41. Qa2+ Kb4 42. Qb2+ Kc4 43. Kd6 b4 {KQKRP(b4): dtc/m/z(50) = 26/55/5m} 
44. Kc6 b3 {KQKRP(b3): dtc/m/z(50) = 25/54/12m} 45. Qe2+ Rd3 46. Qe5
Rd2 47. Qf4+ Kd3 48. Qf1+ Kd4 49. Kb5 {SZ(50)-: Qf4+"} b2 {KQKRP(b2): dtc/m/z(50) = 20/49/20m} 
50. Kb4 Ke4 51. Kc3 Rh2 52. Qe1+ Kf3
53. Kd3 Kf4 54. Qd1 Rf2 55. Qg1 Kf3 56. Qe1 Kg4 57. Ke3 Rf3+ 58. Ke2 Rb3 59.
Qg1+ Rg3 {SZ(50)+: Kh3"} 60. Qd1 Kf4 61. Kf2 Rh3 62. Qd2+ Kf5 63. Qa5+ Kf4 64. Qb4+ Kf5 65. Kg2
Re3 66. Qxb2 {KQKR: dtc/m/z = -27/-32/-27m} Ke4 67. Qb4+ Kd5 68. Kf2 Re4 69. Qb5+ Kd6
70. Kf3 Re5 71. Qb3 Kd7 72. Kf4 Rc5 73. Ke4 Kd6 74. Qf7 Rb5 75. Qf8+ Kd7 76.
Kd4 Ra5 77. Qf7+ Kd6 78. Qf6+ Kc7 79. Qe7+ Kc6 80. Qe6+ Kc7 81. Kc4 Ra2 82.
Qe5+ Kc6 83. Kb4 Ra7 84. Qc5+ Kb7 85. Kb5 Kb8 86. Qd4 {SZ(50)-: Qe5+"} Rc7 {SZ(50)+: Rh7"} 87. Kb6 Rb7+ 88. Ka6
Kc8 89. Qh8+ Kc7 90. Qg7+ Kd6 91. Kxb7 {KQK: dtx = -7m} Kc5 92. Qd7 Kc4 93. Kb6
Kc3 94. Kb5 Kc2 95. Kb4 Kb2 96. Qd2+ Kb1 97. Kb3 Ka1 98. Qb2# 
{Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTC/Z(50) EGTs} 1-0


[White "KQ"]
[Black "KRP"]
[Result "1-0"]
[Date "2014.07.31"]
[Event "5m, 2-3m, KQKRP, GBR 1300.01, maxDTM50,pc 2-3m_P-ful l&w: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "8/1p4Q1/3k4/8/r7/8/8/2K5 b - - 33 1"]
[PlyCount "214"]

{a maxDTM50,pc 2-3m_P-ful btm loss: dtc/m/m50/z/z50 = -63/-91/-107/-32/-32m} 1... Rc4+ 
{a maxDTM50,pc 2-3m_P-ful wtm win: dtc/m/m50/z/z50 = 63/91/107/32/32m} 2. Kb2 Rb4+ 
3. Kc3 Rb6 4. Kd4 Rb4+ 5. Kd3 Rb6 6. Qg5 Kd7 7. Qf5+ Kc7 8. Qa5 Kc6 9. Kd4 Ra6 
10. Qd8 Ra1 {SM+: Ra4} 11. Ke3 {SM-: Ke5"} Rh1 12. Ke2 Rh2+ 13. Kd3 Rh1 14. Qf6+ Kc7
15. Qf3 Rb1 16. Qg3+ Kc6 17. Qg2+ Kd7 18. Qg7+ Kc6 19. Qh6+ Kc5 {SM+: Kb5"} 20. Qe3+ Kc6
21. Kc4 b5+ {KQKRP(b5): dtc/m/z(50) = 58/86/37m} 22. Kc3 Ra1 23. Qe6+ Kc5 24. Qc8+ Kb6 25. Qb8+ Kc6 26. Kd4 Ra4+ 27.
Ke5 Rc4 {position 18w in the KQKRP DTM50,0 line above} 28. Ke6 Rd4 29. Ke7 Rd7+
30. Kf8 Rd4 31. Ke8 Kc5 32. Qe5+ Kc4 33. Qe6+ Kc3 34. Qe3+ Kc4 35. Qc1+ Kb4 36.
Qb2+ Kc5 37. Qc3+ Rc4 38. Qa5 Rd4 39. Ke7 Kc6 40. Qa6+ Kc5 41. Qa7+ Kc4 42.
Qa2+ Kb4 43. Qb2+ Kc5 44. Qf2 Kc4 45. Ke6 Rd3 46. Qc2+ Rc3 47. Qe4+ {SM-: Qa2+"} Kc5 48.
Qe5+ Kb4 49. Qe1 Kb3 50. Qb1+ Ka4 51. Qa2+ Kb4 52. Qb2+ Kc4 53. Kd6 b4 {KQKRP(b4): dtc/m/z(50) = 26/55/5m} 
54. Kc6 b3 {KQKRP(b3): dtc/m/z(50) = 25/54/12m} 55. Qe2+ Rd3 56. Qe5 Rd2 57. Qf4+ Kd3 
58. Qf1+ Kd4 59. Kb5 {SZ(50)-: Qf4+"} b2 {KQKRP(b2): dtc/m/z(50) = 20/49/20m} 60. Kb4 Ke4
61. Kc3 Rh2 62. Qe1+ Kf3 63. Kd3 Kf4 64. Qd1 Rf2 65. Qg1 Kf3 66. Qe1 Kg4 67.
Ke3 Rf3+ 68. Ke2 Rb3 69. Qg1+ Rg3 {SZ(50)+: Kh3"} 70. Qd1 Kf4 71. Kf2 Rh3 72. Qd2+ Kf5 73. Qa5+
Kf4 74. Qb4+ Kf5 75. Kg2 Re3 76. Qxb2 {KQKR: dtc/m/z = -27/-32/-27m} Ke4 77. Qb4+ Kd5 78.
Kf2 Re4 79. Qb5+ Kd6 80. Kf3 Re5 81. Qb3 Kd7 82. Kf4 Rc5 83. Ke4 Kd6 84. Qf7
Rb5 85. Qf8+ Kd7 86. Kd4 Ra5 87. Qf7+ Kd6 88. Qf6+ Kc7 89. Qe7+ Kc6 90. Qe6+
Kc7 91. Kc4 Ra2 92. Qe5+ Kc6 93. Kb4 Ra7 94. Qc5+ Kb7 95. Kb5 Kb8 
96. Qd4 {SZ(50)-: Qe5+"} Rc7 {SZ(50)+: Rh7"}
97. Kb6 Rb7+ 98. Ka6 Kc8 99. Qh8+ Kc7 100. Qg7+ Kd6 101. Kxb7 {KQK: dtx = -7m}
Kc5 102. Qd7 Kc4 103. Kb6 Kc3 104. Kb5 Kc2 105. Kb4 Kb2 106. Qd2+ Kb1 107. Kb3
Ka1 108. Qb2# {Huntington DTM50 and Nalimov DTM EGTs} 1-0


[White "KBN"]
[Black "KN"]
[Result "1-0"]
[Date "2014.07.03"]
[Event "5m, 3-2m, KBNKN, GBR 0014.00, maxDTM50,0/pc 3-2m l&w: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "8/8/1N6/8/6B1/1K3n2/8/k7 b - - 0 1"]
[PlyCount "160"]

{a maxDTM50,0/pc s6m_P-less loss: dtc/m/m50/z/z50 = -50/-79/-80/-50/-50m} 1... Nd4+ 
{a maxDTM50,0/pc s6m_P-less win: dtc/m/m50/z/z50 = 50/79/80/50/50m} 2. Kc4 Nc2 3.
Kc3 Na3 4. Be2 Nb1+ 5. Kc2 Ka2 6. Na4 Na3+ 7. Kc3 Nb1+ 8. Kb4 Nd2 9. Bd3 Nf3
10. Kc3 Ne5 11. Bf5 Nf7 12. Kb4 Ne5 13. Be6+ Kb1 14. Kc3 Kc1 15. Nb2 Kb1 16.
Bc8 Ka1 17. Bh3 Ka2 18. Bf5 Ka1 19. Nd1 Nf7 20. Kb4 Ne5 21. Ne3 Kb2 22. Be4 Ka2
23. Kc3 Ka3 24. Bc2 Ka2 25. Bb3+ Kb1 26. Bd5 Nd7 27. Be4+ Ka2 28. Bf5 Ne5 29.
Nc2 {SM-: Bc2"} Nf3 30. Be6+ Kb1 31. Na3+ Kc1 32. Nc4 Nh2 33. Nb2 Nf1 34. Nd3+
Kb1 35. Nc5 Kc1 36. Bg4 Ne3 37. Nb3+ Kb1 38. Bf3 Nf1 39. Kd3 Ka2 {SM+: Kb2', Ng3'} 40. Nc5 Ng3
41. Bg4 Ka3 42. Ne6 Kb4 43. Ng5 Kc5 44. Ke3 Nf1+ 45. Ke2 Nh2 46. Bc8 {SM-: Bh3"} Kd5
47. Kf2 Ke5 48. Nh3 Kd6 49. Kg2 Kc7 50. Bf5 Kc6 51. Kxh2 {KBNK: dtx = -30m} Kd6
52. Kg2 Kc6 53. Kg3 Kb6 54. Kf3 Kb5 55. Ke3 Kc5 56. Nf4 Kc4 57. Be6+ Kc3 58.
Ng2 Kc2 59. Kd4 Kb2 60. Ne3 Kb1 61. Kc3 Ka1 62. Bf7 Kb1 63. Nc2 Kc1 64. Ba2 Kd1
65. Nd4 Ke1 66. Kd3 Kf2 67. Ne2 Kg2 68. Be6 Kf3 69. Bd7 Kf2 70. Bc6 Kf1 71. Ke3
Ke1 72. Ba4 Kf1 73. Nf4 Ke1 74. Ng2+ Kf1 75. Kf3 Kg1 76. Kg3 Kf1 77. Bb5+ Kg1
78. Ba6 Kh1 79. Nf4 Kg1 80. Nh3+ Kh1 81. Bb7# 
{Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} 1-0


[White "KPP"]
[Black "KP"]
[Result "1-0"]
[Date "2014.05.08"]
[Event "5m, 3-2m, KPPKP, GBR 0000.21, maxDTM50,pc KPPKP l&w: SV+M50-/SV+M50+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/8/1p3K2/3P4/3P4/7k/8 b - - 0 1"]
[PlyCount "282"]

{Moves are also DTZ50-optimal if possible.} 
{1 of 4 maxDTM50 (pc) s6m btm losses: dtc/m/m50/z/z50 = -4/-124/-141/-0/-0m} 1... b4 
{SZ(50)+: K~". A maxDTM50 (pc, pc=0) s6m wtm win: dtc/m/m50/z/z50 = 4/124/141/1/1m} 2. d5 b3 3. d6 b2 4. d7
b1=Q 5. d8=Q {KQP(d3)KQ: dtc/m/m50/z/z50 = -110/-120/-137/-50/-50m} Qf1+ 6. Ke5
Qe2+ 7. Kd4 Qd2 8. Kc4 Qc2+ 9. Kb5 Qb2+ 10. Kc6 Qc2+ 11. Kb7 Qg2+ 12. Ka7 Qg7+
13. Ka6 Qg6+ 14. Kb5 Kg3 15. Kc5 Qf5+ 16. Kc6 Kf2 17. Qd4+ Kf1 18. Kc7 Qa5+ 19.
Kd7 Qf5+ 20. Ke7 Qh7+ 21. Kd8 Qg8+ 22. Kc7 Qf7+ 23. Qd7 Qf4+ 24. Qd6 Qf7+ 25.
Kc6 Qf3+ 26. Qd5 Qf6+ 27. Kd7 Qg7+ 28. Ke8 Qh8+ 29. Ke7 Qh4+ 30. Kd7 Qg4+ 31.
Kd6 Qf4+ 32. Qe5 Qf8+ 33. Kd7 Qf7+ 34. Kc6 Qf3+ 35. Qe4 Qf8 36. Kc7 Qf7+ 37.
Kb6 Qf6+ 38. Kb5 Qb2+ 39. Kc5 Qc1+ 40. Kd4 Qb2+ 41. Kd5 Qb5+ 42. Kd6 Qb8+ 43.
Ke7 Qc7+ 44. Ke8 Qc8+ 45. Kf7 Qc7+ 46. Kg6 Qg3+ 47. Kf6 Qd6+ 48. Kf5 Qf8+ 49.
Kg5 {SM-: Kg4"} Qg7+ 50. Kf4 Qf6+ 51. Qf5 Qd4+ 52. Kg5+ Ke2 53. Qe4+ Qe3+ 54.
Kf5 Kd2 55. d4 {KQP(d4)KQ: dtc/m/m50/z/z50 = -74/-84/-87/-44/-44m} Qh3+ 56. Kf6
Qh6+ 57. Kf7 Qh5+ 58. Ke7 Qg5+ 59. Kd7 Qg7+ 60. Kc6 Qf6+ 61. Kb5 Qf1+ 62. Ka5
Qc4 63. Kb6 Qb4+ 64. Kc6 Qa4+ 65. Kd6 Qb4+ 66. Ke6 Qc4+ 67. Kf6 Kc3 68. Qe3+
Kb4 69. Qe7+ Ka4 70. Qe5 Qc6+ 71. Ke7 Qb7+ 72. Kd8 Qb6+ 73. Kd7 Qa7+ 74. Ke6
Qa8 75. Qd6 Qe4+ 76. Kd7 Qb7+ 77. Kd8 Qa8+ 78. Kc7 Qa7+ 79. Kc6 Qa6+ 80. Kd5
Qb5+ 81. Ke6 Qe8+ 82. Kf6 Qe4 83. Qa6+ Kb4 84. Qb6+ Ka4 85. Qa7+ Kb3 86. Qc5
Qh4+ 87. Ke6 Qg4+ 88. Kd6 Qg6+ 89. Kc7 Qf7+ 90. Kb6 Qf6+ 91. Kb5 Qf1+ 92. Ka5 {
SM-: Kc6"} Qc4 {SZ50+: Qe1+} 93. Qb5+ Kc3 94. d5 {
KQP(d5)KQ: dtc/m/m50/z/z50 = -37/-48/-48/-12/-12m} Qc7+ 95. Qb6 Qe5 96. Qc5+
Kd3 97. Kb5 Qb8+ 98. Qb6 Qe5 99. Qc6 Qb2+ 100. Ka5 Qa1+ 101. Kb6 Qg1+ 102. Qc5
Qg8 103. Ka5 Qg2 104. Ka4 Qg8 105. Kb4 Qg4+ 106. Kb5 Qg7 107. Qc4+ Ke3 108. Kb4
Qd7 109. Qc5+ Kf3 110. d6 {KQP(d6)KQ: dtc/m/m50/z/z50 = -21/-32/-32/-7/-7m} Kg2
111. Qc7 Qg4+ 112. Kb5 Qe2+ 113. Qc4 Qb2+ 114. Kc6 Qf6 115. Qc5 Kh2 116. Kc7
Qf4 117. Qd5 Kg1 118. Kc8 Qc1+ 119. Kd8 Qc3 120. d7 {
KQP(d7)KQ: dtc/m/m50/z/z50 = -10/-22/-22/-10/-10m} Qf6+ 121. Kc7 Qf4+ 122. Kb6
Qf6+ 123. Qc6 Qb2+ 124. Kc7 Qg7 125. Kc8 Qg4 126. Kb7 Qg7 127. Qc7 Qg2+ 128.
Kb8 Qb2+ 129. Kc8 Qg2 130. Qa7+ Kf1 131. Qa1+ Kf2 132. Qa2+ {SZ(50)-: d8=Q"}
Kf1 133. Qxg2+ Kxg2 134. d8=Q {KQK: dtx = -8m} Kg3 135. Kc7 Kg4 136. Qd3 Kg5
137. Kd7 Kg4 138. Ke7 Kg5 139. Qe4 Kh6 140. Kf6 Kh5 141. Qd4 Kh6 142. Qh4# {
Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} 1-0


[White "KNN"]
[Black "KP"]
[Result "1-0"]
[Date "2014.06.08"]
[Event "5m, 3-2m, KNNKP, GBR 0002.01, maxDTM50,0 KNNKP w&l: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "6k1/p7/8/8/7N/7K/2N5/8 w - - 0 1"]
[PlyCount "223"]

{moves are also DTZ50-optimal if possible (Huntington, 2014)} 
{A maxDTM50(0) KNNKP wtm win: dtc/m/m50/z/z50 = 90/91/112/16/29m.} 1. Kg4 
{A maxDTM50(0-1) KNNKP btm loss: dtc/m/m50/z/z50 = -89/-90/-111/-15/-28m.} Kf8
2. Kf4 Ke8 3. Ke5 Ke7 {SZ+: K(d/f)7"} 4. Ng6+ Kd7 5. Nf8+ {SM-: N(a3/f4)"} Kc6
6. Nd4+ Kc5 7. Nfe6+ Kc4 8. Nc2 Kc3 9. Ned4 Kc4 {SZ50+: Kb2"} 10. Na3+ Kb4 11.
Ndc2+ Kc5 12. Ke4 Kd6 13. Nb5+ Kc5 14. Nc3 Kc4 15. Nb1 Kc5 16. Nca3 a6 {
KNNKP(a6): dtc/m/m50/z/z50 = 87/88/96/16/18m} 17. Nc3 a5 {
KNNKP(a5): dtc/m/m50/z/z50 = 86/87/95/25/35m} 18. Kf5 Kb4 19. Ncb1 Kb3 20. Ke5
Kb4 21. Kd4 Ka4 22. Nc2 Kb3 23. Kd3 Ka4 24. Nd2 Kb5 25. Kd4 Kc6 26. Ne4 Kd7 27.
Kd5 Ke7 28. Ke5 Kf7 29. Ng5+ Kg6 30. Ne6 Kh5 31. Kf5 Kh4 32. Ned4 Kg3 33. Kg5
Kg2 34. Kg4 Kf2 35. Kf4 Kg2 36. Nf5 Kf2 37. Ng3 Kg2 38. Ne4 a4 {
KNNKP(a4): dtc/m/m50/z/z50 = 60/61/74/19/34m} 39. Na3 Kh3 40. Kg5 Kh2 41. Kh4 {
SM-: Kg4"} Kg2 42. Kg4 Kf1 43. Kf3 Ke1 44. Ke3 Kf1 45. Nd6 Kg2 46. Nf5 Kf1 47.
Nh4 Kg1 48. Ke2 Kh2 49. Kf3 Kg1 50. Nf5 Kf1 51. Ng3+ Kg1 52. Ne2+ Kh2 53. Nf4
Kg1 54. Ke2 Kh2 55. Kf2 Kh1 56. Kg3 Kg1 57. Ng2 Kf1 58. Kf3 Kg1 59. Ne3 Kh2 60.
Kg4 Kg1 61. Kg3 Kh1 62. Nd1 Kg1 63. Nc3 Kf1 64. Kf3 Kg1 65. Nc4 Kh2 66. Ne3 {
and now, diverging from SZ(50)+'s Kh3"} a3 {
KNNKP(a3): dtc/m/m50/z/z50 = 45/46/46/44/44m} 67. Na2 Kg1 68. Kg3 Kh1 69. Kf2
Kh2 70. Ng2 Kh1 71. Kf3 Kh2 72. Nf4 Kg1 73. Ke2 Kh1 74. Kf1 Kh2 75. Kf2 Kh1 76.
Kg3 Kg1 77. Ne2+ Kf1 78. Kf3 Ke1 79. Ng3 Kd1 80. Ke4 Kd2 81. Kd4 Kd1 82. Kd3
Ke1 83. Ke3 Kd1 84. Nf1 Ke1 85. Nd2 Kd1 86. Nf3 Kc2 87. Ke2 Kb2 88. Kd2 Kb3 89.
Kd3 Ka4 90. Kc4 Ka5 91. Kc5 Ka6 92. Kc6 Ka5 93. Nd2 Ka4 94. Kc5 Ka5 95. Nb3+
Ka4 96. Nbc1 Ka5 97. Nd3 Ka6 98. Kc6 Ka7 99. Nc5 Kb8 100. Kd7 Ka7 101. Kc7 Ka8
102. Kb6 Kb8 103. Nb7 Kc8 104. Kc6 Kb8 105. Nd6 Ka7 106. Kb5 Kb8 107. Kb6 Ka8
108. Kc7 Ka7 109. Nb4 Ka8 110. Nc6 a2 {KNNKP(a2): dtc/m/m50/z/z50 = 1/2/2/1/1m}
111. Nc4 a1=Q {KNNKQ: dtx = 1m} 112. Nb6# {
Huntington DTM50, nalimov DTM and MB'Nalimov' DTZ50 EGTs} 1-0


[White "KNN"]
[Black "KP"]
[Result "1-0"]
[Date "2014.06.28"]
[Event "5m, 3-2m, KNNKP, GBR 0002.10, maxDTM50,pc KNNKP l&w: SV+M50-/SV+M50+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/5N2/p7/8/k1K5/8/1N6 b - - 4 1"]
[PlyCount "256"]

{moves are also DTZ50-optimal if possible (Huntington, 2014)}
{for pc=0/1, dtm50 = 108m; for pc=2/3, dtm50 = 110m; for pc = 4/5, dtm50 = 128m; pc > 5 ==> '50m-draw'}
{a maxDTM50, pc KNNKP btm loss: dtc/m/m50/z/z50 = -84/-85/-128/-22/-47m} 1... Ka4 
{a maxDTM50, pc KNNKP wtm win: dtc/m/m50/z/z50 = 84/85/128/22/47m} 2. Ne4 {SM-: Nd5"} Kb5 
3. Na3+ Ka4 {SZ+: Kc6"} 4. Kb2 Kb4 5. Ka2 Ka4 6. Nc2 Kb5 7.
Nc3+ Kc5 8. Na4+ Kc4 9. Ka3 Kd3 10. Kb3 Kd2 11. Nd4 Kd3 12. Nc6 Ke3 13. Kc3 Ke4
14. Kc4 Kf4 15. Kd4 Kf5 16. Kd5 Kf4 17. Ne7 Kf3 18. Ke5 Kg4 19. Nd5 Kg3 20. Ne3
Kf3 21. Nf5 Kg4 22. Nd4 Kg5 23. Nf3+ Kg4 24. Ke4 Kh5 25. Kf5 Kh6 26. Ne5 Kg7
27. Kg5 Kf8 28. Kf6 Ke8 29. Ke6 Kf8 30. Nd3 Kg7 31. Nf4 Kg8 32. Kf6 Kf8 33.
Ng6+ Ke8 34. Ne5 Kf8 35. Nc4 Ke8 36. Nc5 Kd8 37. Ke6 Kc7 38. Na3 Kc6 
39. Nb3 {and now, diverging from SZ(50)+'s K(b/c)7"} a4 {KNNKP(a4): dtc/m/m50/z/z50 = 81/82/90/48/50m} 
40. Nd4+ Kc5 41. Ke5 Kb4 42. Ndb5 Kc5 43. Ke4 Kc6 44. Kd4 Kd7 45. Kd5 Ke7 46.
Ke5 Kf7 47. Nc7 Kg6 48. Ne6 Kh5 49. Kf5 Kh4 50. Nd4 Kg3 51. Kg5 Kg2 52. Kg4 Kf2
53. Kf4 Kg2 54. Nf5 Kf2 55. Ng3 Kg2 56. Ne4 Kh3 57. Kg5 Kh2 58. Kh4 {SM-: Kg4"} Kg2 59. Kg4
Kf1 60. Kf3 Ke1 61. Ke3 Kf1 62. Nd6 Kg2 63. Nf5 Kf1 64. Nh4 Kg1 65. Ke2 Kh2 66.
Kf3 Kg1 67. Nf5 Kf1 68. Ng3+ Kg1 69. Ne2+ Kh2 70. Nf4 Kg1 71. Ke2 Kh2 72. Kf2
Kh1 73. Kg3 Kg1 74. Ng2 Kf1 75. Kf3 Kg1 76. Ne3 Kh2 77. Kg4 Kg1 78. Kg3 Kh1 79.
Nd1 Kg1 80. Nc3 Kf1 81. Kf3 Kg1 82. Nc4 Kh2 
83. Ne3 {and now, diverging from SZ(50)+'s Kh3"} a3 {KNNKP(a3): dtc/m/m50/z/z50 = 45/46/46/44/44m} 
84. Na2 Kg1 85. Kg3 Kh1
86. Kf2 Kh2 87. Ng2 Kh1 88. Kf3 Kh2 89. Nf4 Kg1 90. Ke2 Kh1 91. Kf1 Kh2 92. Kf2
Kh1 93. Kg3 Kg1 94. Ne2+ Kf1 95. Kf3 Ke1 96. Ng3 Kd1 97. Ke4 Kd2 98. Kd4 Kd1
99. Kd3 Ke1 100. Ke3 Kd1 101. Nf1 Ke1 102. Nd2 Kd1 103. Nf3 Kc2 104. Ke2 Kb2
105. Kd2 Kb3 106. Kd3 Ka4 107. Kc4 Ka5 108. Kc5 Ka6 109. Kc6 Ka5 110. Nd2 Ka4
111. Kc5 Ka5 112. Nb3+ Ka4 113. Nbc1 Ka5 114. Nd3 Ka6 115. Kc6 Ka7 116. Nc5 Kb8
117. Kd7 Ka7 118. Kc7 Ka8 119. Kb6 Kb8 120. Nb7 Kc8 121. Kc6 Kb8 122. Nd6 Ka7
123. Kb5 Kb8 124. Kb6 Ka8 125. Kc7 Ka7 126. Nb4 Ka8 127. Nc6 a2 {KNNKP(a2): dtc/m/m50/z/z50 = 1/2/2/1/1m} 
128. Nc4 a1=Q {more generally, a1=y, KNNKy: dtx = 1m} 
129. Nb6# {Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} *


[White "KQP"]
[Black "KQ"]
[Result "1-0"]
[Date "2014.06.15"]
[Event "5m, 3-2m, KQPKQ, GBR 4000.10, maxDTM50,pc KQPKQ w&l: SV+M50-/SV+M50+"]
[Annotator "Huntington, Galen"]
[SetUp "1"]
[FEN "3Q4/8/8/5K2/8/8/3P3k/1q6 w - - 88 1"]
[PlyCount "275"]

{1 of 3 maxDTM50,pc KQPKQ wtm wins} 1. d3 {a maxDTM50,0/pc KQPKQ btm loss} 
{q.v., DTM50-minimaxing KPPKP line after 5.d8=Q""} Qf1+ 2. Ke5 Qe2+ 3. Kd4 Qd2
4. Kc4 Qc2+ 5. Kb5 Qb2+ 6. Kc6 Qc2+ 7. Kb7 Qg2+ 8. Ka7 Qg7+ 9. Ka6 Qg6+ 10. Kb5
Kg3 11. Kc5 Qf5+ 12. Kc6 Kf2 13. Qd4+ Kf1 14. Kc7 Qa5+ 15. Kd7 Qf5+ 16. Ke7
Qh7+ 17. Kd8 Qg8+ 18. Kc7 Qf7+ 19. Qd7 Qf4+ 20. Qd6 Qf7+ 21. Kc6 Qf3+ 22. Qd5
Qf6+ 23. Kd7 Qg7+ 24. Ke8 Qh8+ 25. Ke7 Qh4+ 26. Kd7 Qg4+ 27. Kd6 Qf4+ 28. Qe5
Qf8+ 29. Kd7 Qf7+ 30. Kc6 Qf3+ 31. Qe4 Qf8 32. Kc7 Qf7+ 33. Kb6 Qf6+ 34. Kb5
Qb2+ 35. Kc5 Qc1+ 36. Kd4 Qb2+ 37. Kd5 Qb5+ 38. Kd6 Qb8+ 39. Ke7 Qc7+ 40. Ke8
Qc8+ 41. Kf7 Qc7+ 42. Kg6 Qg3+ 43. Kf6 Qd6+ 44. Kf5 Qf8+ 45. Kg5 {SM-: Kg4"}
Qg7+ 46. Kf4 Qf6+ 47. Qf5 Qd4+ 48. Kg5+ Ke2 49. Qe4+ Qe3+ 50. Kf5 Kd2 51. d4 {
KQP(d4)KQ: dtc/m/m50/z/z50 = -74/-84/-87/-44/-44m} Qh3+ 52. Kf6 Qh6+ 53. Kf7
Qh5+ 54. Ke7 Qg5+ 55. Kd7 Qg7+ 56. Kc6 Qf6+ 57. Kb5 Qf1+ 58. Ka5 Qc4 59. Kb6
Qb4+ 60. Kc6 Qa4+ 61. Kd6 Qb4+ 62. Ke6 Qc4+ 63. Kf6 Kc3 64. Qe3+ Kb4 65. Qe7+
Ka4 66. Qe5 Qc6+ 67. Ke7 Qb7+ 68. Kd8 Qb6+ 69. Kd7 Qa7+ 70. Ke6 Qa8 71. Qd6
Qe4+ 72. Kd7 Qb7+ 73. Kd8 Qa8+ 74. Kc7 Qa7+ 75. Kc6 Qa6+ 76. Kd5 Qb5+ 77. Ke6
Qe8+ 78. Kf6 Qe4 79. Qa6+ Kb4 80. Qb6+ Ka4 81. Qa7+ Kb3 82. Qc5 Qh4+ 83. Ke6
Qg4+ 84. Kd6 Qg6+ 85. Kc7 Qf7+ 86. Kb6 Qf6+ 87. Kb5 Qf1+ 88. Ka5 {SM-: Kc6"}
Qc4 {SZ(50)+: Qe1+"} 89. Qb5+ Kc3 90. d5 {
KQP(d5)KQ: dtc/m/m50/z/z50 = -37/-48/-48/-12/-12m} Qc7+ 91. Qb6 Qe5 92. Qc5+
Kd3 93. Kb5 Qb8+ 94. Qb6 Qe5 95. Qc6 Qb2+ 96. Ka5 Qa1+ 97. Kb6 Qg1+ 98. Qc5 Qg8
99. Ka5 Qg2 100. Ka4 Qg8 101. Kb4 Qg4+ 102. Kb5 Qg7 103. Qc4+ Ke3 104. Kb4 Qd7
105. Qc5+ Kf3 106. d6 {KQP(d6)KQ: dtc/m/m50/z/z50 = -21/-32/-32/-7/-7m} Kg2
107. Qc7 Qg4+ 108. Kb5 Qe2+ 109. Qc4 Qb2+ 110. Kc6 Qf6 111. Qc5 Kh2 112. Kc7
Qf4 113. Qd5 Kg1 114. Kc8 Qc1+ 115. Kd8 Qc3 116. d7 
{KQP(d7)KQ: dtc/m/m50/z/z50 = -10/-22/-22/-10/-10m} Qf6+ 117. Kc7 Qf4+ 118. Kb6
Qf6+ 119. Qc6 Qb2+ 120. Kc7 Qg7 121. Kc8 Qg4 122. Kb7 Qg7 123. Qc7 Qg2+ 124.
Kb8 Qb2+ 125. Kc8 Qg2 126. Qa7+ Kf1 127. Qa1+ Kf2 128. Qa2+ {SZ(50)+: d8=Q"}
Kf1 129. Qxg2+ Kxg2 130. d8=Q {KQK: dtx = -8m} Kg3 131. Kc7 Kg4 132. Qd3 Kg5
133. Kd7 Kg4 134. Ke7 Kg5 135. Qe4 Kh6 136. Kf6 Kh5 137. Qd4 Kh6 138. Qh4# {
Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} 1-0


[White "KBB"]
[Black "KNN"]
[Result "1-0"]
[Date "2014.06.08"]
[Event "6m, 3-3m, KBBKNN, GBR 0026.00, maxDTM50,0 w&l: SV+M50-/SV+M50+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "7k/7B/8/2B5/3K4/2n5/8/5n2 w - - 0 1"]
[PlyCount "179"]

{(Huntington, 2013). Moves are also DTZ50-optimal wherever possible.} 
{the unique maxDTM50 (0) KBBKNN wtm win: dtc/m/m50/z/z50 = 6/67/90/6/29m} 1. Bd3
{a maxDTM50 (0) KBBKNN btm loss: dtc/m/m50/z/z50 = -5/-66/-89/-5/-28m} Na4 
2. Bb4 {SM-/Z-: Bd6"} Ng3 3. Ke5 Nb2 4. Bb5 Nd1 5. Be1 Nh1 6. Kf6 Ne3 7. Kf7 Ng4 8.
Kg6 Ne5+ 9. Kf5 Nf3 10. Bc3+ Kg8 11. Bc4+ Kh7 12. Kg4 Nh2+ 13. Kh3 Nf3 14. Kg2
Ng5 15. Bd3+ Kg8 16. Bf6 Nh7 17. Bh4 Nf8 18. Kf3 Kf7 19. Bc4+ Kg7 20. Bf1 Ng6 {
SZ50+: Kg6''} 21. Be1 Kf6 22. Ke4 Ne7 23. Bh3 Kf7 24. Bg2 Ke6 25. Bf3 Kd6 26.
Bxh1 {KBBKN: dtc/m/m50/z/z50 = -50/-62/-64/-50/-50m} Kc5 27. Bd2 Nd5 28. Bg2
Kd6 29. Kd4 Nf6 30. Bc3 Ke6 31. Bh3+ Ke7 32. Ke5 Kf7 33. Bd4 Ne8 34. Bf5 Nf6
35. Bc2 Ne8 36. Kf4 Ng7 37. Bb3+ Kg6 38. Kg4 Ne8 39. Bc2+ Kf7 40. Kg5 Ke6 41.
Bb3+ Kd6 42. Kf5 Nc7 43. Be5+ Kc6 44. Bh2 Nb5 45. Ke5 Kc5 46. Bd5 Nc3 47. Be6
Ne2 48. Bf7 Kb4 49. Ke4 Nc3+ 50. Kd4 Nb5+ 51. Ke5 Kc5 52. Bg1+ Kb4 53. Bf2 Kc3
54. Kd5 Kd2 55. Bh4 Ke3 56. Bg5+ Kd3 57. Kc5 Na3 58. Bg6+ Kc3 59. Bd8 Nc2 60.
Ba5+ Kb3 61. Bf7+ Ka3 62. Kb5 {SM-: Bc3"} Kb2 63. Kc4 Na3+ 64. Kd3 Nb5 65. Bb4
Na3 66. Bd6 Nb1 67. Bf8 Kc1 68. Bg7 Na3 69. Be8 Nb1 70. Ba4 Na3 71. Kc3 Nb1+
72. Kb3 Kd1 {SZ/Z50+: Nd2+''} 73. Kb2+ Kd2 74. Kxb1 {KBBK: dtx = -16m} Kd3 75.
Bb3 Ke3 76. Bc2 Kf3 77. Kc1 Ke3 78. Kd1 Kf3 79. Kd2 Kf4 80. Ke2 Kg4 81. Bh6 Kg3
82. Ke3 Kg4 83. Bf4 Kh4 84. Bd1 Kh3 85. Kf2 Kh4 86. Be2 Kh3 87. Bg5 Kh2 88. Bf1
Kh1 89. Bg2+ Kh2 90. Bf4# {Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} 1-0


[White "KBB"]
[Black "KNN"]
[Result "1-0"]
[Date "2014.06.28"]
[Event "6m, 3-3m, KBBKNN, GBR 0026.00, maxDTM50,pc w&l: SV+M50-/SV+M50+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "2n5/8/3B4/8/3K4/1B6/6n1/2k5 w - - 43 1"]
[PlyCount "181"]

{moves are also DTZ50-optimal if possible (Huntington, 2014)}
{a maxDTM50, pc KBBKNN wtm win: dtc/m/m50/z/z50 = 12/70/91/12/29m} 1. Ba3+ 
{a maxDTM50, pc KBBKNN btm loss: dtc/m/m50/z/z50 = -11/-69/-90/-11/-28m} Kd2 
2. Bb4+ Ke2 {SZ+: Kc1"} 3. Bc4+ {SM-: Be6"} Kf3 4. Bd5+ Kg3 5. Ke4 Nb6 6. Be6 Na4
7. Bb3 Nb6 8. Bc5 Nd7 9. Bd6+ Kh4 10. Be7+ Kh5 11. Be6 Nb6 12. Bc5 Na8 13. Bd7
Kh6 14. Bh3 Nh4 15. Be7 Ng6 16. Bd8 Kg7 17. Be6 Kf8 18. Kd4 Nf4 19. Bf5 Kf7 20.
Ke5 Ng6+ 21. Kd6 Nf4 22. Bc8 Kg6 23. Ke5 Nd3+ 24. Kd4 Nc1 {SZ(50)+: Nf4"} 25. Bb7 Kf5 26. Ke3
Nb3 27. Bxa8 {KBBKN: dtc/m/m50/z/z50 = -50/-62/-64/-50/-50m} Nc5 
28. Ba5 Nd7 29. Bb7 Ke6 30. Kd4 Nf6 31. Bc8+ Ke7 32. Bf5 Kf7
33. Ke5 Ne8 34. Be6+ Kg6 35. Bd8 Ng7 36. Bb3 Nh5 37. Kd6 Ng7 38. Kd7 Kf5 39.
Ke7 Kf4 40. Bc7+ Ke3 41. Bb6+ Kd3 42. Bf7 Nf5+ 43. Ke6 Ne3 44. Bg6+ Ke2 45. Be4
Nc4 46. Bd4 Nd2 47. Bg6 Kf3 48. Kf5 Ke2 49. Kf4 Nb3 50. Bb6 Nd2 51. Bd8 Nb3 52.
Ke5 Nd2 53. Be8 Nf3+ 54. Kf4 Nd4 55. Ke4 Nb3 56. Bh5+ Kd2 57. Bf6 Nc1 58. Bg6
Ne2 59. Bg5+ Kc3 60. Ke3 Nc1 61. Bh4 Kb4 62. Be1+ Ka4 63. Kd4 {SM-: Kd2"} Kb3 64. Bd2 Na2
65. Bf5 Kb2 66. Kc4 Ka3 67. Be3 Kb2 68. Bd4+ Ka3 69. Bg7 Nc1 70. Bg4 Na2 71.
Bd1 Nc1 72. Kc3 Na2+ 73. Kc2 Ka4 {SZ(50)+: Nb4+"} 74. Kb2+ Kb4 75. Kxa2 {KBBK: dtx = -16m} Kc4 76. Bc2 Kc5 77. Bb3
Kc6 78. Ka3 Kc5 79. Ka4 Kc6 80. Kb4 Kc7 81. Kc5 Kd7 82. Bf8 Kc7 83. Ba4 Kb7 84.
Kb5 Ka7 85. Kc6 Ka6 86. Kc7 Ka5 87. Bd7 Ka6 88. Bb4 Ka7 89. Bc8 Ka8 90. Bb7+
Ka7 91. Bc5# {Huntington DTM50, Nalimov DTM and MB 'Nalimov' DTZ50 EGTs} *



{sample DTZ50' positions showing dtz50' >/=/< dtz}


[White "KQP"]
[Black "KQ"]
[Result "1-0"]
[Date "2013.11.16"]
[Event "5m, 3-2m, KQPKQ, 4000.10, max known '(dtz50 - dtz)' position: SV+Z50-/SV+Z50+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/1P5Q/1K6/3q4/8/5k2/8 w - - 0 1"]
[PlyCount "99"]

{a max known 'dtz50 - dtz' position: dtc/m/z/z50 = 52/63/1/50m} 1. Qg5 
(1. b7 $4 {dtz = 51m}) 
{dtdc/m/z/z50 = -67/-80/-49/-49m} 1... Qe4 2. Kc5 Qc2+ 3. Kd5 Qb3+ 4. Kc6 Qe6+ 5. Kc5 Qc8+ 6. Kd4
Qh8+ 7. Kc4 Qh7 8. Qd5 Qc2+ 9. Kb4 Qb2+ 10. Kc5 Qa3+ 11. Kc6 Qa4+ 12. Kd6 Qf4+
13. Kd7 Qg4+ 14. Qe6 Qg7+ 15. Kd6 Qg3+ 16. Kc5 Qg5+ 17. Kc4 Qc1+ 18. Kd5 Qb2
19. Qg6 Qb5+ 20. Kd4 Qb4+ 21. Ke5 Qc5+ 22. Kf4 Qd4+ 23. Kf5 Qc5+ 24. Kg4 Qd4+
25. Kh5 Qd5+ 26. Kh6 Ke1 27. Qg1+ Ke2 28. Qg4+ Kf1 29. Qg5 Qc6+ 30. Qg6 Qb7 31.
Qf6+ Ke2 32. Kg5 Ke3 33. Qe5+ Kf2 34. Qc5+ Ke2 35. Kf4 Qf3+ 36. Ke5 Qg3+ 37.
Ke6 Qh3+ 38. Kd6 Qh6+ 39. Kc7 Qg7+ 40. Kc6 Qf6+ 41. Qd6 Qc3+ 42. Kd7 Qf3 43.
Kc8 Qc3+ 44. Kd8 Qa5 45. Ke7 Qb5 46. Qf6 Qb1 47. Kf7 Qh7+ 48. Kf8 Qb1 49. Qe7+
Kd1 50. b7 {KQP(b7)KQ: dtc/m/z = -11/-21-11m} {MB 'Nalimov' DTZ50 EGTs} *


[White "KRP"]
[Black "KP"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "5m, 3-2m, KRPKP, GBR 0100.11: dtz50' < dtz, 50mr-draw"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "6R1/P7/1k6/8/8/8/p2K4/8 b - - 0 1"]
[PlyCount "2"]

1... a1=Q 2. a8=Q {KQRKQ: dtz = -106p} *


[White "KBB"]
[Black "KQN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "6m, 3-3m, KBBKQN, GBR 3023.00: dtz = 1p, dtz50' > dtz"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "1n2K3/7q/6B1/8/8/B7/3k4/8 w - - 0 1"]
[PlyCount "7"]

1. Bb4+ Ke3 2. Bc5+ Kf4 3. Bd6+ Kf3 4. Bxh7 {KBBKN: dtz = -100p} {de Man DTZ50' EGTs} *


[White "KQ"]
[Black "KBBN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "6m, 2-4m, KQKBBN, GBR 1063.00: dtz > 100p, dtz50' < dtz"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/bb6/5Q2/8/8/3k4/8/1K1n4 w - - 0 1"]
[PlyCount "89"]

{dtz = 101p, dtz50' = 89p} 1. Qf1+ Kd2 2. Qf4+ Kd3 3. Qc7 Nc3+ 4. Kb2 Na4+ 5.
Ka3 Nc5 6. Qa5 Ba6 7. Kb4 Ke4 8. Qc7 Bb7 9. Qh2 Nd3+ 10. Kb5 Nc5 11. Qe2+ Kd4
12. Qd1+ Ke4 13. Qb1+ Kf4 14. Qa2 Ba6+ 15. Kc6 Ke4 16. Qd5+ Ke3 17. Qg8 Bb7+
18. Kc7 Kd4 19. Qg1+ Kc4 20. Qf1+ Kd5 21. Qg2+ Kd4 22. Qb2+ Ke4 23. Kd6 Ba6 24.
Qg2+ Ke3 25. Qg7 Bb7 26. Qg1+ Kd3 27. Qb1+ Ke3 28. Ke7 Ba6 29. Qd1 Ke4 30. Qd8
Bb7 31. Qd2 Ba6 32. Qd1 Bb7 33. Qb1+ Ke3 34. Kf8 Ba6 35. Qg1+ Ke4 36. Qg2+ Kf4
37. Qa8 Bb6 38. Kg7 Bb7 39. Qe8 Ba7 40. Kh6 Kf5 41. Qe7 Kg4 42. Qf6 Kg3 43. Qa1
Bb8 44. Qg1+ Kf3 45. Qxc5 {KQKBB: dtz = -61m} {de Man DTZ50' EGTs and MB 'Nalimov' DTC/Z EGTs} *


[White "KRRP"]
[Black "KQ"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "6m, 4-2m, KRRPKQ, GBR 3200.10: dtz50' > dtz > 100p"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "7q/7k/8/6R1/8/8/K1P2R2/8 b - - 0 1"]
[PlyCount "387"]

1... Qa8+ 2. Kb2 Qb7+ 3. Kc1 Qh1+ 4. Kd2 Qh4 5. Rfg2 Qd4+ 6. Ke2 Qe4+ 7. Kd1
Qf3+ 8. Kd2 Qf4+ 9. Kd3 Qf3+ 10. Kc4 Qc6+ 11. Kb4 Qe4+ 12. Kb3 Qb7+ 13. Kc3
Qc7+ 14. Kd3 Qd6+ 15. Ke2 Qa6+ 16. Kd2 Qd6+ 17. Ke1 Qb4+ 18. Kd1 Qd6+ 19. Rd2
Qf4 20. Rd7+ Kh6 21. Rgd5 Qg4+ 22. Kd2 Qb4+ 23. Kd3 Qa3+ 24. Ke2 Qa4 25. R7d6+
Kh7 26. Rh5+ Kg8 27. Rg5+ Kh7 28. Kd1 Qf4 29. Rh5+ Kg7 30. Rhd5 Qg4+ 31. Kd2
Qb4+ 32. Kd3 Qa3+ 33. Ke2 Qa4 34. Rd2 Qe4+ 35. Kf2 Qf4+ 36. Kg1 Qe3+ 37. Rf2
Qe1+ 38. Kg2 Qe4+ 39. Kf1 Qh1+ 40. Ke2 Qh5+ 41. Kd3 Qb5+ 42. Ke4 Qe8+ 43. Kd4
Qb8 44. Rdf6 Qb4+ 45. Kd5 Qa5+ 46. Ke4 Qa8+ 47. Kf5 Qh1 48. Rg6+ Kh7 49. Rg4
Kh6 50. Rgf4 Qd5+ 51. Kg4 Qh5+ 52. Kg3 Qe5 53. Kf3 Qh5+ 54. Ke4 Qe8+ 55. Kd3
Qb5+ 56. Rc4 Qd5+ 57. Rd4 Qb5+ 58. Ke4 Qe8+ 59. Kf3 Qc6+ 60. Ke3 Qc3+ 61. Rd3
Qc5+ 62. Kf3 Qc6+ 63. Kg3 Qe4 64. Rfd2 Qe5+ 65. Kg2 Qg7+ 66. Kf3 Qf7+ 67. Ke4
Qb7+ 68. Rd5 Qc6 69. Kf3 Qc3+ 70. Kf2 Kh7 71. Re2 Qc4 72. Rh5+ Kg7 73. Rhe5
Qf4+ 74. Kg1 Qd4+ 75. R5e3 Kh6 76. Kf1 Qh4 77. Rf2 Qc4+ 78. Rd3 Kg5 79. Re2 Qb4
80. Re5+ Kf6 81. Re1 Kg5 82. Rg3+ Kh4 83. Rge3 Qb2 84. R1e2 Kh5 85. Ke1 Qc1+
86. Kf2 Qh1 87. Rd3 Kh6 88. Re6+ Kg7 89. Re7+ Kg6 90. Ke2 Qh5+ 91. Kd2 Qa5+ 92.
Kd1 Qa1+ 93. Ke2 Qa4 94. Rc3 Qg4+ 95. Kd3 Qd1+ 96. Kc4 Qf1+ 97. Kb4 Qb1+ 98.
Kc5 Qa1 99. Ree3 Qa5+ 100. Kc4 Qa4+ 101. Kd3 Qb5+ 102. Kd2 Qa5 103. Ke2 Qa6+
104. Red3 Qa4 105. Rb3 Qg4+ 106. Kd2 Qg5+ 107. Re3 Qa5+ 108. Kc1 Qa1+ 109. Rb1
Qa5 110. Reb3 Qa2 111. Rc3 Kf5 112. Rbb3 Qa1+ 113. Kd2 Ke6 114. Re3+ Kd5 115.
Red3+ Ke6 116. Ra3 Qg1 117. Kc3 Qc1 118. Ra4 Qb1 119. Rh3 Qe1+ 120. Kb2 Qe5+
121. Kb3 Qd5+ 122. Rc4 Qb5+ 123. Rb4 Qd5+ 124. Kb2 Qe5+ 125. Rc3 Kf6 126. Rb6+
Kf7 127. Rbb3 Kf6 128. Kb1 Qe1+ 129. Ka2 Qe5 130. Rb6+ Ke7 131. Rb7+ Kd6 132.
Rbb3 Qa5+ 133. Kb2 Ke7 134. Rb7+ Kd6 135. Re3 Qh5 136. Rb8 Qg5 137. Rbb3 Qf6+
138. Ka2 Qf7 139. Re1 Qf2 140. Rd3+ Kc5 141. Rc1 Kc4 142. Kb1 Qb6+ 143. Rb3 Qd4
144. Rf1 Kc5 145. Re1 Qg4 146. Re8 Kc4 147. Rd8 Qf5 148. Rdd3 Qf6 149. Ka2 Qe5
150. Ra3 Qh8 151. Ra4+ Kc5 152. Rg3 Kb5 153. Raa3 Kb4 154. Rg6 Kb5 155. Kb1 Qe5
156. Rag3 Qe8 157. Kb2 Kc5 158. Rc3+ Kd5 159. Rg5+ Kd6 160. Rc4 Qe3 161. Rb5
Qg1 162. Rbc5 Qg2 163. Kb3 Qb7+ 164. Ka4 Qa8+ 165. Kb4 Qb7+ 166. Rb5 Qh1 167.
Rd4+ Kc6 168. Rc5+ Kb6 169. Rd6+ Kb7 170. Rd3 Kb6 171. Rc8 Kb7 172. Rdc3 Qb1+
173. Rb3 Qf1 174. Rc4 Ka6 175. Rc6+ Kb7 176. Kc5+ Ka7 177. Rc7+ Ka8 178. Rc3
Qe1 179. Kb5 Qb1+ 180. Ka4 Qd1 181. Rd3 Qa1+ 182. Ra3 Qb2 183. Rc5 Qd4+ 184.
Kb5+ Kb8 185. Rac3 Qd7+ 186. Kb4 Qd4+ 187. Ka3 Ka7 188. R5c4 Qd6+ 189. Ka2 Qe6
190. Ra3+ Kb6 191. Rb3+ Ka5 192. Rcb4 Qe1 193. Rb8 Qe4 194. Ra8+ Qxa8 
{KRPKQ: dtc/m/z = 2/15/2m} {de Man DTZ50' EGTs} *



{DTM-deeper precursors of maxDTM(k) positions}


[White "KP"]
[Black "KQ"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "4m, 2-2m, KPKQ, GBR 3000.10: 1p-precursor of a maxDTM 3m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/8/k7/8/q7/1K4P1/8 w - - 0 1"]
[PlyCount "1"]

{1p-precursor of a maxDTM 3m (KPK) position} 
1. Kxa3 {KPK: dtm = maxDTM(3) = -56p} *


[White "KRP"]
[Black "KQN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "6m, 3-3m, KRPKQN, GBR 3103.10: 3p-precursor of a maxDTM 3m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/1k6/R7/8/nq6/1K4P1/8 w - - 0 1"]
[PlyCount "3"]

{3p-precursor of a maxDTM 3m (KPK) position} 
1. Kxb3 Kxa5 2. Kxa3 {KPK: dtm = maxDTM(3) = -56p} *


[White "KQP"]
[Black "KR"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "5m, 3-2m, KQPKR, GBR 1300.10: 1p-precursor of a maxDTM 4m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/5k2/2PK4/5Q2/5r2/8/8/8 b - - 0 1"]
[PlyCount "1"]

{1p-precursor of a maxDTM(4) 4m (KPKR) position} 
1... Rxf5 {KPKR: dtm = maxDTM(4) = 85p} *


[White "KQPP"]
[Black "KBP"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "7m, 4-3m, KQPPKBP, GBR 1030.21: 2p-precursor of a maxDTM 5m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/8/8/1p6/4P3/k1b1P3/Q1K5/8 b - - 0 1"]
[PlyCount "2"]

{2p-precursor of a maxDTM(5) 5m ($$) position} 
1... Kxa2 2. Kxc3 {dtm = maxDTM(5) = -254p} *


[White "KRNN"]
[Black "KQNN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "8m, 4-4m, KRNNKQNN, GBR 3108.00: 2p-precursor of a maxDTM 6m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "6qk/5n2/5N2/8/8/5n2/1RK5/1N6 w - - 0 1"]
[PlyCount "2"]

{2p-precursor of a maxDTM(6) 6m (KRNKNN) position: dtm = 525p} 
1. Nxg8 Kxg8 {KRNKNN: dtm = maxDTM(6) = 523p} *


[White "KQRP"]
[Black "KQRBN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "9m, 4-5m, KQRPKQRBN, GBR 4433.10: 2p-precursor of a maxDTM 7m position"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "1n1k4/6Q1/5KP1/8/6Rq/1r4b1/8/8 w - - 0 1"]
[PlyCount "2"]

{2p-precursor of a maxDTM(7) 7m (KQPKRBN) position: dtm = 1099p} 
1. Rxh4 Bxh4+ {KQPKRBN: dtm = maxDTM(7) = 1097p} *



{adding a man, reducing maxDTC}

[White "KQ"]
[Black "K"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "3m, 2-1m, KQK, GBR 1000.00, maxDTC/Z KQK l&w: SV+C-/SV+C+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "7K/6Q1/8/8/8/8/2k5/8 b - - 0 1"]
[PlyCount "20"]

{a maxDTC/Z KQK btm loss: dtc/z = -20p} 1... Kd3 2. Qe5 Kc4 3. Kg8 Kd3 
4. Kf7 Kc2 5. Qe3 Kb1 6. Qe2 Kc1 7. Kf6 Kb1 8. Ke5 Kc1 9. Kd4 Kb1 10. Kc3 Ka1 11. Qb2# *


[White "KQB"]
[Black "KB"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "5m, 3-2m, KQBKB, GBR 1040.00, maxDTC/Z KQBKB l&w: SV+C-/SV+C+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "1BKQ4/8/8/8/8/8/8/1k3b2 b - - 0 1"]
[PlyCount "16"]

{a maxDTC KQBKB btm loss: dtc/z = -16p} 1... Ba6+ 2. Kd7 Bb5+ 3. Ke7 Kc2 
4. Qd5 Be2 5. Be5 Bd3 6. Qa2+ Kd1 7. Bf4 Ke1 8. Qd2+ Kf1 9. Qxd3+ *


[White "KQN"]
[Black "KN"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "5m, 3-2m, KQNKN, GBR 1004.00, maxDTC/Z KQNKN l&w: SV+C-/SV+C+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "7N/8/8/8/8/7n/2k1K3/4Q3 b - - 0 1"]
[PlyCount "18"]

{a maxDTC KQNKN btm loss: dtc/z = -18p} 1... Nf4+ 2. Kf3 Nd3 3. Qe3 Nc1 
4. Ng6 Nb3 5. Ne5 Nd2+ 6. Ke2 Nb1 7. Qd3+ Kb2 8. Nc4+ Ka1 9. Qc2 Na3 10. Qb2# *


[White "KQP"]
[Black "KP"]
[Result "1-0"]
[Date "2014.08.07"]
[Event "5m, 3-2m, KQPKP, GBR 1000.11, maxDTC KQPKP l&w: SV+C-/SV+C+"]
[Annotator "Haworth, Guy"]
[SetUp "1"]
[FEN "8/2p5/8/8/k7/2P5/8/K1Q5 b - - 0 1"]
[PlyCount "12"]

{a maxDTC KQPKP btm loss: dtc = -12p} 1... Kb5 2. Kb2 Kc6 3. Kb3 Kd7 4. Kc4 Kc8 
5. Qh1 Kb8 6. Qc6 Kc8 7. Qxc7+ *