2018 Chess Variants Dropout Tournament, Krieg

'Fast' (10 days + 1 day/move, max 30 days)
This game is being played under Kriegspiel rules. Click the 'info' tab for more information.
1. d4
Clock started on 8/15/2018
1... e6 2. h3 d5 3. Nf3 Nf6 4. e3 h6 5. Be2 Bd6 6. a3 b6 7. Nc3 Bb7 8. Bd2 Nc6 9. b4 Qe7 10. O-O O-O-O 11. a4 Kb8 12. a5 bxa5 13. bxa5 Nxa5 14. Rxa5 Ba8 15. Ra1 Kc8 16. Rb1 Kd7 17. Kh1 Ke8 18. Rb8 Nd7 19. Rxd8+ Kxd8 20. Be1 c6 21. Rg1 Kc7 22. Nb1 Rb8 23. Nc3 Qf8 24. Nb1 g6 25. Nc3 c5 26. dxc5 Bxc5 27. Bd3 Be7 28. Qe2 Qg8 29. Bd2 Bf8 30. Nb1 Bg7 31. Bc3 Qh8 32. Kh2 Kd6 33. Nfd2 Ke7 34. f3 Kd6 35. e4 dxe4 36. fxe4 Bxe4 37. Nxe4+ Ke7 38. Re1 Rf8 39. Nbd2 Nb8 40. Ra1 a6 41. Rf1 Rd8 42. Ra1 Qe8 43. Rf1 Kf8 44. Ra1 Kg8 45. Rf1 Qf8 46. Ra1 Kh7 47. Rf1 Qh8 48. Ra1 Rc8 49. Rf1 Rf8 50. Ra1 f6 51. Rf1 Re8 52. Ra1 e5 53. Rf1 Rc8 54. Ra1 Rf8 55. Rf1 Qg8 56. Ra1 Rf7 57. Rf1 Qf8 58. Ra1 f5 59. Rf1 fxe4 60. Nxe4 Bf6 61. Ra1 Nd7 62. Rf1 Qg7 63. Ra1 Rf8 64. Rf1 Rb8 65. Ra1 Rf8 66. Rf1 Rf7 67. Ra1 Nf8 68. Rf1 g5 69. Ra1 Ng6 70. Rf1 Ra7 71. Ra1 Rf7 72. Rf1 Be7 73. Ra1 Nf8 74. Rf1 Qg6 75. Ra1 Ne6 76. Rf1 Ng7 77. Ra1 h5 78. Rf1 Kh6 79. Ra1 Qf6 80. Rf1 Kg6 81. Ra1 Ne6 82. Rf1 Rh7 83. Ra1 h4 84. Rf1 Rg7 85. Ra1 Kf5 86. Rf1+ Kg6 87. Ra1 Nd8 88. Rf1 Nf7 89. Ra1 Nh6 90. Rf1 Kf7 91. Ra1 Rg6 92. Rf1 Kg8 93. Ra1 Qg7 94. Rf1 Rf6 95. Ra1 Kf8 96. Rf1 Rxf1 97. Qxf1+ Kg8 98. Qa1 Kh7 99. Bxe5 g4 100. hxg4 Nxg4+ 101. Kg1 Nxe5 102. Qxe5 Qxe5 103. Nd2+ Kh6 104. Nb3 Qg7 105. Kf2 Bf6 106. Ke1 Ba1 107. Kd2 Bf6 108. Kc1 Kg5 109. Kb1 Qh8 110. Ka2 Kg4 111. Ka3 Kg3 112. Ka4 h3 113. gxh3 Kxh3 114. Ka5 Kg3 115. Kxa6 Qh2 116. Kb5 Bh4 117. Kc4 Qf2 118. Kd5 Kf3 119. Ke5 Ke3 120. Ke6 Qd2 121. Kd5 Be1 122. Kc5 Qf2 123. Kc4 Qg3 124. Kd5 Kf2 125. Kd4 Kg1 126. Ke4 Bf2 127. Kf5 Qe3 128. Kf6 Qa7 129. Ke5 Bd4+ 130. Kd5 Qg7 131. Ke4 Kf2 132. Kd5 Ke3 133. Ke6 Ba1 134. Kd5 Qb2 135. Ke6 Kf4 136. Kd5 Qe5+ 137. Kc6 Qg5 138. Kb6 Bf6 139. Kc6 Ke5 140. Kc5 Ke6+ 141. Kb4 Kd5 142. Kb5 Bd8 143. Kb4 Qe7+ 144. Kb5 Qd6 145. Na5 Be7 146. Nc4 Qc5+ 147. Ka4 Kc6 148. Kb3 Kb5 149. Kb2 Qb4+ 150. Kc1 Ka4 151. Kd1 Bc5 152. Ke2 Bd4 153. Kf3 Bb2 154. Ke3 Ba3 155. Ke2 Bc1 156. Kf2 Qa3 157. Ke2 Qb2 158. Kf3 Kb4 159. Ke2 Kc3 160. Kf3 Qb4 161. Ke2 Ba3 162. Ke3 Qc5+ 163. Ke2 Bb4 164. Kf3 Kd4 165. Ke2
Draw

(Under Construction, Diagrams to be added)

The name for this game is German for "War Game". You do not see your opponent's forces.

Game Rules

The pieces are initially set up according to standard chess rules.

Opponent's pieces and pawns are hidden. The following detailed visibility rules are in place:

  • all your pieces are visible,
  • all pieces belonging to the opponent are invisible (not displayed in any way),
  • you can not see which pieces you have taken
  • you are told after each move only how many pieces your opponent still has,
  • you are told after each move if you have captured a piece (for example, 'Rx?') However, you can not tell which type of piece you have captured.
  • Your opponent's moves are displayed as question marks (however, they are appended with '+' and '#' for check and mate, and '?xR' indicates you have just lost a rook! ).

 

8/8/8/8/2P5/N2PPN1P/PPQBBPP1/R3K2R
Example Kriegspiel board after a few moves. There is no information which black pieces are present on the board and where they are placed.

Piece movement is exactly as in standard chess. However, the first legal move that you attempt to make is final. There is no Submit button! This means that when it is your turn to move, and you pick up a piece and drop it in any (legal!) square, that constitutes your move - no takebacks!

You may try illegal move, in such case the attempt fails and you can try something else.

The game is ended with mate, resignation, stalemate (which is draw), or draw agreement. There is no 50-move rule, or 3-fold repetition (you can't know whether they happened, after all).

Note: if you wish to resign, you must enter a move with your resignation (select Resign and then make any move), since there is no submit button.

Hints

Elementary tips

Many players test all possible pawn captures before attempting any other moves. Since a pawn move is different from a capture, this allows the player to attempt these pawn captures before committing to a non-capture move.

Just as in standard chess, you must get out of check as your first priority. However, one clever thing to do when in check is to attempt all possible captures that might remove the check situation, before attempting other ways of eliminating check.

It makes sense to keep all your pieces protected, if one of your pieces disappear, you can recapture.

Game strategy

Slightly rephrased text originally posted by epictetus cincinnatus as comment to this page.

It is very important to understand that the mindset for playing chess well is completely different from the mindset for playing kriegspiel well. Chess played well is predominantly about offense. Kriegspiel played well is predominantly about defense. Chess involves reasoning from complete knowledge. Kriegspiel involves reasoning from incomplete knowledge. In fact, a very useful trait for kriegspiel is paranoia.

All rules below should be treated as a rules of thumb. They have a point, but there are always exceptions dictated by extenuating circumstances.

The value of the pieces is a bit different than in standard chess. I would rate the relative strength of the pieces as follows: queen 7; rook 4; bishop 3; knight 2; pawn 2 (because pawn promotion is very common); and king 3. Vulnerability to attack means the spread in strength of pieces is less.

For as long as possible make sure as many of your pieces as possible are supported by as many of your pieces as possible. In other words, always think in terms of defensive structure when making moves, especially early in the game. Defend everything possible because you don't know where an attack will come from.

Hide you stronger pieces in out of the way places or behind weaker pieces.

Always check for possible pawn captures.

During a series of exchanges always capture with the weakest piece available first and stronger pieces later.

Be cautious in attacks. When deciding to attack a square threaten the square with as many pieces as possible and generally push the attack as long as possible. Attack with your weaker pieces first and your stronger pieces later.

Do not put the opposing king in check gratuitously. That can provide information about your position, but when you do put the king in check that can be a very important piece of information to have.

Be aggressive (but not too aggressive) with your king. Discovering where it can't move can provide a wealth of information as to your opponent's position.

Study your opponent's games before you play them. Noticing early opening tendencies can often give you a leg up in constructing your defense or even allow for an early ambush.

Conversely, try to avoid particular tendencies in your own early game.

Be patient. It's rare that you have to rush into anything and you're more likely than not to simply stumble into trouble.

Example Endgame Study

Contrary to common perceptions, it is not that very difficult to create checkmate late in the endgame with only a king and queen against a bare king.

Divide & Conquer. The first task is to setup the queen in the center. The board will then be divided into four quadrants or corrals (the insurmountable fence represented by shades.)

4?3/4?3/4?3/4?3/????Q???/3K?3/4?3/4?3

Now we know the opponent's king is trapped in one of the four quadrants. But where exactly?

Search & Destroy. The second task is to find the opponent's king. The white king has to move and roam from quadrant to quadrant until it meets resistance. When the king can't move into a target square we know the other king is nearby.

Going back to the above diagram, (assuming the lower left quadrant [a1-d3] has already been thoroughly searched and cleared,) now let's say white tried to move 1.Ke2 but was unable to. Resistance, that means the other king is in one of two (2) possible squares (shaded for demonstration.)

 

8/8/8/8/4Q3/3K4/5?2/5?2

Apply the Squeeze. Now tactics comes into play 1.Qe3 [further reducing the quadrant area] ? 2.Ke4 ? 3.Kf4 ? 4.Kg4 ?

 

8/8/8/8/6K1/4Q3/6??/5?1?

Now the other king could be in one of the four (4) different squares (again shaded for demo only).

5.Qd2 [again squeeze!] [not 5.Kg3 right away because there's a real good possibility of stalemate] ?

 

8/8/8/8/6K1/8/3Q4/5???

6.Kg3 ? 7.Qd1# 

Of course there are other ways to skin a cat.

Example games

Note, that while playing, players did not see opponent pieces.

K+R+B vs. King. - Here's a nice endgame tactics . Once surfnsuds has pinpointed black's whereabouts, there's no escape from his accurate and scheming mind. This game also shows how important it is for the king to support the other pieces in the endgame.

A short longshot. - A lucky miniature. Must see.

Against all odds. (I am still smarting over this one! - suds)

Please, add some


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