[Retros] Last move Type D - record list 28.03.2007

[Mario Richter]

Dear retro fans,

a little bit later than usual, the weekly update of the list
of records for Lastmovers Type D.

Some interesting points:
Roberto has identified a subset of DD positions as
chameleon type - in the last move a piece of one colour
is replaced by a piece of the same nature of the
opposite colour (and the nice PxQ=Q/PxQ=Q example Andrew
provided is a difficult to achieve example for DDchameleon).

The following list gives all those move types which haven't
yet been used in the Typ D combinations:

KxP QxR QxB QxP RxQ RxR RxB RxP BxQ BxP NxB NxP
PxQ=R PxQ=B PxR=B PxR=N PxR PxR=Q PxB=Q PxB=B

We now have 29 DD positions (out of the 59 theoretically
possible), the missing ones are:

KxQ KxP QxQ QxR QxB QxP RxQ RxR RxB RxP BxQ BxP
NxQ NxR NxB NxP PxQ=R PxQ=B PxQ PxR=B PxR=N PxR
PxR=Q PxB PxB=Q PxB=B PxN=Q PxP 0-0 0-0-0.

Some preliminary remarks:

To keep the list a little bit shorter, the following
abbreviations are used:

rml         = Retros Mailing List,
fs 64       = feenschach, Heft 64/1983, p.29ff
rcv: <date> = the date, on which I received problems which were
              communicated to me via private email

Note, that the last move combinations are normalized for
ordering purposes, i.e. even if White's last move was e.g.
 NxR, and Black's last move was K-, this is not listed as
'NxR/K-', but as 'K-/NxR', the order used is K>Q>R>B>N>P
and '-' > 'x'.

Differences to the preceeding list are marked as follows:
<i> = improvement
<n> = new record, not formerly in the list

K-/K-/16|5bKR/4p1pR/6pp/8/8/5P1P/4P1Pr/5Bkr
        |Andrew Buchanan|rml 16.03.2007
K-/KxN/15|1nk2KBn/1prppRpp/p1p2p2/8/8/8/8/8
         |Mario Richter|rml 23.02.2007
K-/Q-/19|6nn/4ppqk/5prb/6p1/8/8/PPPPPPPP/7K
        |Bernd Schwarzkopf|fs 64
K-/R-/19|5bnn/4ppr1/5pRb/6p1/8/5P2/PPPPP1P1/k1K5
        |Wolfgang Dittmann|fs 64
K-/B-/17|6nn/4ppbk/5pRb/6p1/8/8/PPPP1PP1/K7
        |Wolfgang Dittmann|fs 64
K-/N-/9|5K1N/3prppk/4p2p/8/8/8/8/8
       |Mario Richter|rml 18.02.2007
K-/NxR/11|8/8/8/8/8/5PPP/3PPKbk/4Bn1B
         |Mario Richter|rml 23.02.2007
K-/P-/12|4B1rr/pp1ppK1k/2p3pp/8/8/8/8/8
        |Mario Richter [b:Type=A Cat=PxB=Q]|rml 12.03.2007
K-/P--/15|7k/3pp1pP/6PP/5pKp/7B/6P1/4PP1p/8
         |Bernd Schwarzkopf, Werner Keym|rml 12.03.2007 (rcv:10.03.2007)
K-/P-=B/11|3BrbR1/2p1pKpk/4p2p/8/8/8/8/8
          |Mario Richter|rml 03.03.2007
K-/PxN/11|8/8/8/8/8/1PPP4/KpPRP3/Bnk5
         |Mario Richter|rml 18.02.2007
<n>K-/PxN=R/16|5bKR/4p1pR/5p1p/8/7P/6P1/4P1Pk/5Brr
              |Andrew Buchanan, Werner Keym|rml 28.03.2007 (rcv:25.03.2007)
KxQ/KxN/13|2bbk2K/pppprp1p/4p1p1/8/8/8/8/8
          |Andrew Buchanan,Bernd Schwarzkopf [after L. Ceriani]|rml
23.02.2007
KxR/KxR/22|nBqb4/K1Bpp3/1ppp4/8/8/1PPP4/k1bPP3/NbQB4
          |Jorge Lois & Roberto Osorio|rml 16.03.2007
KxR/B-/11|8/8/8/8/8/1PPP4/k1KPP3/BnQB4
         |Jorge Lois & Roberto Osorio|rml 16.03.2007
KxB/KxB/14|4B2q/3ppKpp/8/8/8/8/PPkPP3/Q2b4
          |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
KxB/KxN/12|8/8/8/8/8/3P1P2/1PPRPrPP/2B1k2K
          |Bernd Schwarzkopf|S2 Problemkiste 153 (June 2004), p. 532
KxB/R-/9|8/8/8/8/8/PP6/KPkPP3/R2b4
        |Mario Richter|rml 17.03.2007
KxB/P-/10|3B2qk/2ppKppp/p7/8/8/8/8/8
         |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
KxB/P-=B/10|8/8/8/8/8/P7/KPkPP1P1/2qb1b2
           |Mario Richter [b:Type=A Cat=KxB]|rml 12.03.2007
KxN/KxN/10|8/8/8/8/8/4P3/2PPRPPP/3BK2k
          |Bernd Schwarzkopf|fs 64
KxN/NxQ/15|rk2NRB1/prpppKpp/1p3p2/8/8/8/8/8
          |Bernd Schwarzkopf|rml 23.02.2007
KxN/NxR/8|RNk5/Kppp4/p7/8/8/8/8/8
         |U. Grinblat|problem November 1957
KxN/NxN/15|8/8/8/8/6PP/5PRQ/1P1PPRRB/4Knrk
          |Bernd Schwarzkopf |rml 23.02.2007
KxN/P-=B/9|8/8/8/8/8/8/kPPP1P2/bRK1b3
          |Hans Gruber, Bernd Schwarzkopf|fs 64
KxN/PxB=R/13|2bk1bRK/1pppp1pR/5p1p/8/8/8/8/8
            |Bernd Schwarzkopf, Werner Keym|rml 23.02.2007
KxN/PxB=N/13|2bk1bNK/1pppp1pR/5p1p/8/8/8/8/8
            |Bernd Schwarzkopf, Werner Keym|rml 23.02.2007
Q-/Q-/13|8/8/8/8/1P6/kPPP4/qRbrP3/1QKB4
        |Thierry LE GLEUHER|rml 04.03.2007
Q-/R-/13|8/8/8/8/1P6/kPPP4/rRbrP3/1QKB4
        |Thierry LE GLEUHER|rml 04.03.2007
Q-/B-/13|8/8/8/8/1P6/kPPP4/brrRP3/K1QB4
        |Thierry LE GLEUHER|rml 04.03.2007
Q-/BxN/14|8/8/8/8/8/3PPkPP/2PPpBbb/4K1Qn
         |Bernd Schwarzkopf|rml 03.03.2007 (rcv:01.03.2007)
Q-/N-/13|8/8/8/8/1P6/kPPP4/nRbrP3/KQ1B4
        |Thierry LE GLEUHER|rml 10.03.2007
QxQ/P-=B/21|n1b5/1ppp4/1p6/8/8/3P2PP/1PPkPPRr/bQ3QKn
           |Jorge Lois & Roberto Osorio|rml 17.03.2007
QxN/QxN/12|8/8/8/8/8/6P1/PPPP1PRP/q1QK1k2
          |Bernd Schwarzkopf|fs 64
QxN/RxN/12|8/8/8/8/8/6P1/PPPP1PRP/r1QK1k2
          |Bernd Schwarzkopf|fs 64
R-/R-/13|8/8/8/8/1P6/kPPP4/rRbrP3/1RKB4
        |Thierry LE GLEUHER|rml 04.03.2007
R-/B-/13|8/8/8/8/1P6/kPPP4/brrRP3/K1RB4
        |Thierry LE GLEUHER|rml 04.03.2007
R-/N-/13|8/8/8/8/7P/4PPkr/3PP1bR/4bRKn
        |Bernd Schwarzkopf|fs 64
R-/P-/11|8/1p6/p7/8/8/kPP5/b1PP4/KRb5
        ||Mario Richter [b:Type=A Cat=R-]
R-/P-=B/11|8/8/8/8/8/kPP5/b1PP1P2/KRb1b3
          |Mario Richter [b:Type=A Cat=R-]|rml 12.03.2007
RxN/RxN/9|8/8/8/8/8/P7/KPkPP3/R1rb4
         |Bernd Schwarzkopf|fs 64
RxN/B-/10|8/8/8/8/1P6/kPP5/bRrP4/K1B5
         |Günter Eder, Günter Büsing, Hans Peter Rehm, Hemmo Axt|fs 64
B-/B-/12|8/8/8/8/PP6/pkPP4/b1prP3/B1K5
        |Thierry LeGleuher|rml 19.03.2007
B-/BxN/14|3BbKBk/2ppr1rb/4pppp/8/8/8/8/8
         |W. Dittmann, Hans Gruber, Günter Büsing, B. Schwarzkopf|fs 64
B-/N-/11|3Bb1kN/2ppK1pp/3p2p1/8/8/8/8/8
        |Bernd Schwarzkopf|fs 64
BxR/BxR/11|4BB1b/3pRK1k/4pppp/8/8/8/8/8
          |Mario Richter|rml 03.03.2007
BxR/PxN=Q/10|4BQ1b/3ppK1k/5ppp/8/8/8/8/8
            |Mario Richter|rml 03.03.2007
<n>BxB/BxB/27|7n/ppp1pp1p/2p3p1/8/8/2PPPP2/1PRQqrP1/kBRNnrbK
             |Roberto Osorio & Jorge Lois|rml 23.03.2007
BxN/BxN/11|4BbnB/3ppK1k/4pp1p/8/8/8/8/8
          |Mario Richter|rml 19.03.2007
BxN/PxN=Q/10|8/8/8/8/8/5P1P/3PPk1K/4bqnB
            |Mario Richter|rml 12.03.2007
BxN/PxN=R/10|8/8/8/8/8/5P1P/3PPk1K/4brnB
            |Mario Richter|rml 12.03.2007
N-/N-/11|8/8/8/8/8/P2P4/KPkPP3/nnNb4
        |Andrew Buchanan|rml 16.03.2007
N-/P--/21|6bN/1P3p1k/BrPPPP2/1ppppppK/7p/8/1PP5/8
         |Bernd Schwarzkopf | fs 64
N-/P-=B/13|8/8/8/8/8/1PPP4/nPKP1P2/kBNRb3
          |Bernd Schwarzkopf |rml 23.02.2007
N-/PxN/13|8/8/8/8/8/P2PP3/pPPrRP2/KBNk4
         |Bernd Schwarzkopf|fs 64
NxR/P-=B/12|8/8/8/8/8/1PPP4/nPKP1P2/k1NRb3
           |Mario Richter|rml 19.03.2007
NxR/PxN=R/13|8/8/8/8/8/2PPP3/P1PKRPP1/rk1NB3
            |W. Dittmann, Hans Gruber, Günter Büsing, B. Schwarzkopf|fs 64
<i>NxN/NxN/17|8/8/8/8/8/P1P5/RPrPPPPk/KBnbNQR1
             |Roberto Osorio, Jorge Lois, Andrew Buchanan|rml 28.03.2007
(rcv:23.03.2007)
NxN/P--/26|qbbB1KN1/pprkrBp1/2ppp1p1/7p/8/1P2P3/P1PP1PPP/8
          |Bernd Schwarzkopf |rml 23.02.2007
P-/P-/8|8/8/8/8/8/4P1P1/3Prp1P/5K1k
       |Wolfgang Dittmann|fs 64
P-/P--/13|8/3ppp1p/7P/6pK/8/5PPk/4P1pp/8
         |Bernd Schwarzkopf|rml 06.03.2007 (rcv:06.03.2007)
P-/P-=B/9|8/8/8/8/8/6P1/2P1PP1P/3bRK1k
         |Bernd Schwarzkopf|fs 64
P-/P-=N/11|8/8/8/8/8/5P1P/1PP1PRP1/nRK1k3
          |Bernd Schwarzkopf|fs 64
P-/PxQ=N/13|8/8/8/8/8/P4P1P/1PPPPRP1/2Bk1Kn1
           |Werner Keym|rml 24.02.2007
<n>P-/PxN-=N/11|8/8/8/8/8/5P2/P1PPP1P1/k1KRnB2
               |Werner Keym|rml 28.03.2007 (rcv:19.03.2007)
<i>P--/P--/17|8/2pp4/2p2PP1/4pKRP/4ppPk/7p/3PPP2/8
             |Bernd Schwarzkopf, Werner Keym|rml 28.03.2007 (rcv:25.03.2007)
P-=B/P-=B/10|K1krB3/p1pp1p2/8/8/8/8/6P1/7b
            |Andrew Buchanan|rml 19.02.2007
P-=B/P-=N/12|Nrk1K3/1pp1prp1/5p2/8/8/8/1P6/b7
            |Mario Richter [b:Type=A Cat=P-=N]|rml 12.03.2007
P-=N/P-=N/16|Nrk5/1ppRp3/3p4/8/8/4P3/3PrPP1/5KRn
            |Andrew Buchanan|rml 19.02.2007
P-=Q/P-=Q/20|5bnQ/4prB1/5pkP/6p1/6P1/5PKp/4PRb1/5BNq
            |Andrew Buchanan|rml 03.03.2007 (rcv:26.02.2007)
P-=R/P-=R/20|Rnb5/1kpp4/brp5/1p6/6P1/5PRB/4PPK1/5BNr
            |Andrew Buchanan|rml 12.03.2007 (rcv:09.03.2007)
<n>PxQ=Q/PxQ=Q/24|1Qrb4/1Prpp3/krp5/pp6/6PP/5PRK/3PPRp1/4BRq1
                 |Andrew Buchanan|rml 28.03.2007 (web:27.03.2007)
PxQ=N/PxQ=N/24|kNb2b2/rp1pppp1/p1p5/8/8/5P1P/1PPPP1PR/2B2BnK
              |Roberto Osorio & Jorge Lois|rml 03.03.2007
PxR=R/PxR=R/20|5bRq/3pp1pk/6pp/8/8/3P2PP/1PP1P1PK/5BrQ
              |Roberto Osorio & Jorge Lois|rml 25.02.2007
PxB=R/PxB=R/16|5bRK/4p1pR/5p1p/8/8/5P1P/4P1Pr/5Brk
              |Werner Keym|rml 24.02.2007
<i>PxB=R/PxB=N/15|KRb5/Rp1p4/p1p5/8/8/6P1/4P1Pk/5Brb
                 |Andrew Buchanan|rml 28.03.2007 (rcv:24.03.2007)
PxB=N/PxB=N/16|5bNK/4p1pR/5p1p/8/8/5P1P/4P1Pr/5Bnk
              |Werner Keym|rml 24.02.2007
<n>PxB=N/PxNxR/15|KNb5/Rp1p4/p1p5/8/8/6P1/4P1Pk/5Brb
                 |Andrew Buchanan|rml 28.03.2007 (rcv:24.03.2007)
<i>PxN=R/PxN=R/14|BRb5/Kp1p4/1p6/8/8/6P1/4P1Pk/5Brb
                 |Andrew Buchanan|rml 28.03.2007 (rcv:24.03.2007)
PxN=B/PxN=B/24|2brrkBQ/1p1pp1pp/6p1/8/8/1P6/PP1PP1P1/qbKRRB2
              |Roberto Osorio & Jorge Lois|rml 25.02.2007
PxN/PxN/26|n1bqkb2/1ppppppp/1p6/8/8/1P6/1PPPPPPP/N1BQKB2
          |Andrew Buchanan|rml 12.03.2007 (rcv:09.03.2007)
<i>PxN=N/PxN=N/22|1Nqkrb2/1pppp1p1/p7/8/8/7P/1P1PPPP1/2BRKQn1
                 |R.Osorio,J.Lois&A.Buchanan|rml 28.03.2007 (rcv:25.03.2007)
0-0-0/K-/17|8/p7/8/8/8/1P1PkPP1/bPPR1RPN/2KR1QB1
           |Werner Keym|rml 03.03.2007 (rcv:25.02.2007)
0-0-0/Q-/20|8/8/8/8/5PP1/1PPPkrqB/bPPR1rPN/2KR1QB1
           |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/R-/19|8/p7/8/8/8/1PPPkPP1/bPPR1rPB/2KR1nQN
           |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/B-/19|8/p7/8/8/5P2/1PPPkrb1/bPPR1RPN/2KR1QB1
           |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/BxN/21|8/1p6/8/8/5PP1/1PPPkrrB/brPR1RPN/2KR1QB1
            |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/N-/19|8/pp6/8/8/8/1PPPkPP1/bPPR1rPn/2KR1QB1
           |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/P-/18|8/p7/8/8/3p4/1P1PkPP1/bPPR1RPN/2KR1QB1
           |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/P-=N/22|8/8/8/8/3PPPP1/1PPrkprB/bPPR1Np1/2KR1Qnn
             |Werner Keym|rml 17.03.2007 (rcv:14.03.2007)
0-0-0/PxB/20|8/2pp4/8/8/3P4/1PPpkPP1/bPPR1rPN/2KR1QB1
            |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/PxN/20|8/7p/7p/8/8/1PPPkPP1/bPPR1rPb/2KR1nQb
            |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0-0/PxP/22|8/p3ppp1/4p3/8/8/1PPPk1P1/bPPR1NPb/2KR1nBn
            |Werner Keym|rml 19.03.2007 (rcv:14.03.2007)
0-0-0/P=B/21|8/4pp1p/6p1/8/8/1PPPkPP1/brPR1RP1/2KR1Qrb
            |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0/K-/19|8/5ppp/8/8/6P1/3PkPPp/1PPR1RPr/2BQ1RK1
         |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0/Q-/22|8/5ppp/8/8/4PPP1/2PPkrqp/1PrR1RPr/2BQ1RK1
         |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0/R-/21|8/5p1p/6p1/8/5PP1/2PPkrPp/1PRr1RPr/2BQ1RK1
         |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0/B-/17|8/8/8/8/6P1/2PPkPPB/1PrR1RPr/2Bb1RK1
         |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0/N-/23|7n/1p3ppp/8/8/6PN/2PPkPPp/1PrR1RPr/2bQ1RK1
         |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0/NxN/24|8/1p2pppp/p3p2B/6n1/6P1/4kPPB/1PPR1RPr/2BQ1RK1
          |Werner Keym|rml 12.03.2007 (rcv:10.03.2007)
<i>0-0/P-/18|8/8/8/8/4P1P1/2PPkpPB/1PrR1RPr/2BQ1RK1
            |Jorge Lois & Roberto Osorio|rml 19.03.2007
0-0/P-=B/18|8/8/8/8/6P1/2PPkPPB/1PrR1RPr/b1bQ1RK1
           |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0/PxQ=N/19|8/6p1/7p/8/6P1/2PPkPPB/1PrR1RPr/2Bn1RK1
            |Werner Keym|rml 04.03.2007 (rcv:03.03.2007)
0-0/PxQ/23|8/p2pppp1/8/5p2/6P1/2PPkPPB/1PrR1RPr/2bn1RK1
          |Roberto Osorio & Jorge Lois|rml 12.03.2007 (11.03.2007)
0-0/PxB/21|7N/5pp1/6p1/8/7N/2PPkPPr/1PRR1RPr/2BQ1RK1
          |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
0-0/PxN/17|8/8/8/8/6P1/2PPkPPB/1PpR1RPr/2BQ1RK1
          |Werner Keym, Bernd Schwarzkopf|rml 04.03.2007 (rcv:03.03.2007)
[DR] O-O/P-/18|1n1q1rk1/4pp1p/4rp1K/2b2pnP/3pb3/5p2/6p1/8
              |Roberto Osorio & Jorge Lois|rml 03.03.2007



Regards,

  mario