[Retros] Animal Chess

Alain BROBECKER abrobecker at yahoo.com
Thu Nov 22 06:40:18 EST 2007

Dear Peter,

You're right, the introductory problem isn't valid, as
Mario told me (see below). The error is mine.

So we're only left with two valid problems.

regards, Alain

--- Mario Richter <mri_two at t-online.de> wrote:

> > An introductory problem could be:

> > 1) Find a game that is noted 1.P P 2.H H 3.P H 4.H+ H 5.A#

> > (Russell Ernest Rice, 2006/12)

> > Alas Mario Richter computer tested it and found it has two solutions.

> > Will you find them both?

>

> I only mentioned that 1.P P 2.H H 3.P H 4.H+ H 5.A#

> neither has a unique game nor a unique final position,

> in fact, there are many solutions:

>

>

> ---------- ANIMALCHESS6.OUY

> L1-rnbq1bnr/ppp1pppp/3p2Q1/4k3/2P5/4PN2/PP1P1PPP/RNB1KB1R|: 1. e3 d6 2.

> Qd1-h5 Ke8-d7 3. c4 Kd7-e6 4. Qh5-g6+ Ke6-e5 5. Ng1-f3+

> L2-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/4PN1P/PPPP1PP1/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. h3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L4-rnbq1bnr/ppp1pppp/6Q1/3pk3/7P/4PN2/PPPP1PP1/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. h4 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L6-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/4PNP1/PPPP1P1P/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. g3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L8-rnbq1bnr/ppp1pppp/6Q1/3pk3/6P1/4PN2/PPPP1P1P/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. g4 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L10-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/3PPN2/PPP2PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. d3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L12-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/2P1PN2/PP1P1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. c3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L14-rnbq1bnr/ppp1pppp/6Q1/3pk3/2P5/4PN2/PP1P1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. c4 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L16-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/1P2PN2/P1PP1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. b3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L18-rnbq1bnr/ppp1pppp/6Q1/3pk3/1P6/4PN2/P1PP1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. b4 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L20-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/P3PN2/1PPP1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. a3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L22-rnbq1bnr/ppp1pppp/6Q1/3pk3/P7/4PN2/1PPP1PPP/RNB1KB1R|: 1. e3 d5 2.

> Qd1-h5 Ke8-d7 3. a4 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L24-rnbq1bnr/ppp1pppp/3p2Q1/4k3/4P3/5NP1/PPPP1P1P/RNB1KB1R|: 1. e4 d6 2.

> Qd1-h5 Ke8-d7 3. g3 Kd7-e6 4. Qh5-g6+ Ke6-e5 5. Ng1-f3+

> L25-rnbq1bnr/ppp1pppp/3p3Q/4k3/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. e4 d6 2.

> Qd1-h5 Ke8-d7 3. d3 Kd7-e6 4. Qh5-h6+ Ke6-e5 5. Ng1-f3+

> L26-rnbq1bnr/ppp1pppp/3p2Q1/4k3/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. e4 d6 2.

> Qd1-h5 Ke8-d7 3. d3 Kd7-e6 4. Qh5-g6+ Ke6-e5 5. Ng1-f3+

> L27-rnbq1bnr/ppp1pppp/6Q1/3pk3/4P3/5NP1/PPPP1P1P/RNB1KB1R|: 1. e4 d5 2.

> Qd1-h5 Ke8-d7 3. g3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L29-rnbq1bnr/ppp1pppp/7Q/3pk3/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. e4 d5 2.

> Qd1-h5 Ke8-d7 3. d3 Kd7-d6 4. Qh5-h6+ Kd6-e5 5. Ng1-f3+

> L30-rnbq1bnr/ppp1pppp/6Q1/3pk3/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. e4 d5 2.

> Qd1-h5 Ke8-d7 3. d3 Kd7-d6 4. Qh5-g6+ Kd6-e5 5. Ng1-f3+

> L33-rnbq1bnr/ppp1pppp/3p4/4k1B1/4P1Q1/3P1N2/PPP2PPP/RN2KB1R|: 1. d3 d6 2.

> Bc1-g5 Ke8-d7 3. e4 Kd7-e6 4. Qd1-g4+ Ke6-e5 5. Ng1-f3+

> L35-rnbq1bnr/ppp1pppp/7Q/3pk3/6P1/3P1N2/PPP1PP1P/RNB1KB1R|: 1. d3 d5 2.

> Qd1-d2 Ke8-d7 3. g4 Kd7-d6 4. Qd2-h6+ Kd6-e5 5. Ng1-f3+

> L39-rnbq1bnr/ppp1pppp/6Q1/3pk3/8/2P2NP1/PP1PPP1P/RNB1KB1R|: 1. c3 d5 2.

> Qd1-c2 Ke8-d7 3. g3 Kd7-d6 4. Qc2-g6+ Kd6-e5 5. Ng1-f3+

> L43-rnbq1bnr/ppp1pppp/3p2Q1/4k3/2P5/5NP1/PP1PPP1P/RNB1KB1R|: 1. c4 d6 2.

> Qd1-c2 Ke8-d7 3. g3 Kd7-e6 4. Qc2-g6+ Ke6-e5 5. Ng1-f3+

> L45-rnbq1bnr/ppp1pppp/6Q1/3pk3/2P5/5NP1/PP1PPP1P/RNB1KB1R|: 1. c4 d5 2.

> Qd1-c2 Ke8-d7 3. g3 Kd7-d6 4. Qc2-g6+ Kd6-e5 5. Ng1-f3+

> L1-rnbq1bnr/pppp1ppp/Q3p3/3k4/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 e6 2.

> Qd1-e2 Ke8-e7 3. d4 Ke7-d6 4. Qe2-a6+ Kd6-d5 5. Nb1-c3+

> L2-rnbq1bnr/pppp1ppp/Q7/3kp3/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-e2 Ke8-e7 3. d4 Ke7-d6 4. Qe2-a6+ Kd6-d5 5. Nb1-c3+

> L4-rnbq1bnr/pppp1ppp/Q7/3kp3/1P6/2N1P3/P1PP1PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-e2 Ke8-e7 3. b4 Ke7-d6 4. Qe2-a6+ Kd6-d5 5. Nb1-c3+

> L6-rnbq1bnr/pppp1ppp/5Q2/3kp3/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-f3 Ke8-e7 3. d4 Ke7-d6 4. Qf3-f6+ Kd6-d5 5. Nb1-c3+

> L8-rnbq1bnr/pppp1ppp/5Q2/3kp3/1P6/2N1P3/P1PP1PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-f3 Ke8-e7 3. b4 Ke7-d6 4. Qf3-f6+ Kd6-d5 5. Nb1-c3+

> L10-rnbq1bnr/pppp1ppp/6Q1/3kp3/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-g4 Ke8-e7 3. d4 Ke7-d6 4. Qg4-g6+ Kd6-d5 5. Nb1-c3+

> L11-rnbq1bnr/pppp1ppp/6Q1/3kp3/1P6/2N1P3/P1PP1PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-g4 Ke8-e7 3. b4 Ke7-d6 4. Qg4-g6+ Kd6-d5 5. Nb1-c3+

> L12-rnbq1bnr/pppp1ppp/7Q/3kp3/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-h5 Ke8-e7 3. d4 Ke7-d6 4. Qh5-h6+ Kd6-d5 5. Nb1-c3+

> L16-rnbq1bnr/pppp1ppp/7Q/3kp3/1P6/2N1P3/P1PP1PPP/R1B1KBNR|: 1. e3 e5 2.

> Qd1-h5 Ke8-e7 3. b4 Ke7-d6 4. Qh5-h6+ Kd6-d5 5. Nb1-c3+

> L1-rnbq1bnr/ppppp1pp/Q4p2/3k4/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 f6 2.

> Qd1-e2 Ke8-f7 3. d4 Kf7-e6 4. Qe2-a6+ Ke6-d5 5. Nb1-c3+

> L2-rnbq1bnr/ppppp1pp/2Q2p2/4k3/6P1/4PN2/PPPP1P1P/RNB1KB1R|: 1. e3 f6 2.

> Qd1-f3 Ke8-f7 3. g4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L3-rnbq1bnr/ppppp1pp/Q7/3k1p2/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 f5 2.

> Qd1-e2 Ke8-f7 3. d4 Kf7-e6 4. Qe2-a6+ Ke6-d5 5. Nb1-c3+

> L4-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/4PN1P/PPPP1PP1/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. h3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L6-rnbq1bnr/ppppp1pp/2Q5/4kp2/7P/4PN2/PPPP1PP1/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. h4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L8-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/4PNP1/PPPP1P1P/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. g3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L10-rnbq1bnr/ppppp1pp/2Q5/4kp2/6P1/4PN2/PPPP1P1P/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. g4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L12-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/3PPN2/PPP2PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. d3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L14-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/2P1PN2/PP1P1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. c3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L16-rnbq1bnr/ppppp1pp/2Q5/4kp2/2P5/4PN2/PP1P1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. c4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L18-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/1P2PN2/P1PP1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. b3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L20-rnbq1bnr/ppppp1pp/2Q5/4kp2/1P6/4PN2/P1PP1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. b4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L22-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/P3PN2/1PPP1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. a3 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L24-rnbq1bnr/ppppp1pp/2Q5/4kp2/P7/4PN2/1PPP1PPP/RNB1KB1R|: 1. e3 f5 2.

> Qd1-f3 Ke8-f7 3. a4 Kf7-e6 4. Qf3-c6+ Ke6-e5 5. Ng1-f3+

> L26-rnbq1bnr/ppppp1pp/6Q1/3k1p2/3P4/2N1P3/PPP2PPP/R1B1KBNR|: 1. e3 f5 2.

> Qd1-g4 Ke8-f7 3. d4 Kf7-e6 4. Qg4-g6+ Ke6-d5 5. Nb1-c3+

> L27-rnbq1bnr/ppppp1pp/6Q1/4kp2/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. e4 f5 2.

> Qd1-g4 Ke8-f7 3. d3 Kf7-e6 4. Qg4-g6+ Ke6-e5 5. Ng1-f3+

> L29-rnbq1bnr/ppppp1pp/7Q/4kp2/4P3/3P1N2/PPP2PPP/RNB1KB1R|: 1. d3 f5 2.

> Qd1-d2 Ke8-f7 3. e4 Kf7-e6 4. Qd2-h6+ Ke6-e5 5. Ng1-f3+

> L31-rnbq1bnr/ppppp1pp/7Q/4kp2/2P5/3P1N2/PP2PPPP/RNB1KB1R|: 1. d3 f5 2.

> Qd1-d2 Ke8-f7 3. c4 Kf7-e6 4. Qd2-h6+ Ke6-e5 5. Ng1-f3+

> L35-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/2P2NP1/PP1PPP1P/RNB1KB1R|: 1. c3 f5 2.

> Qd1-a4 Ke8-f7 3. g3 Kf7-e6 4. Qa4-c6+ Ke6-e5 5. Ng1-f3+

> L39-rnbq1bnr/ppppp1pp/2Q5/4kp2/8/2PP1N2/PP2PPPP/RNB1KB1R|: 1. c3 f5 2.

> Qd1-a4 Ke8-f7 3. d3 Kf7-e6 4. Qa4-c6+ Ke6-e5 5. Ng1-f3+

> L41-rnbq1bnr/ppppp1pp/1Q6/4kp2/2P5/3P1N2/PP2PPPP/RNB1KB1R|: 1. c4 f5 2.

> Qd1-b3 Ke8-f7 3. d3 Kf7-e6 4. Qb3-b6+ Ke6-e5 5. Ng1-f3+

> L43-rnbq1bnr/ppppp1pp/2Q5/4kp2/2P5/5NP1/PP1PPP1P/RNB1KB1R|: 1. c4 f5 2.

> Qd1-a4 Ke8-f7 3. g3 Kf7-e6 4. Qa4-c6+ Ke6-e5 5. Ng1-f3+

> L47-rnbq1bnr/ppppp1pp/Q7/4kp2/2P5/3P1N2/PP2PPPP/RNB1KB1R|: 1. c4 f5 2.

> Qd1-a4 Ke8-f7 3. d3 Kf7-e6 4. Qa4-a6+ Ke6-e5 5. Ng1-f3+

> L48-rnbq1bnr/ppppp1pp/2Q5/4kp2/2P5/3P1N2/PP2PPPP/RNB1KB1R|: 1. c4 f5 2.

> Qd1-a4 Ke8-f7 3. d3 Kf7-e6 4. Qa4-c6+ Ke6-e5 5. Ng1-f3+

> L51-rnbq1bnr/ppppp1pp/5p2/4k3/4P1Q1/BP3N2/P1PP1PPP/RN2KB1R|: 1. b3 f6 2.

> Bc1-a3 Ke8-f7 3. e4 Kf7-e6 4. Qd1-g4+ Ke6-e5 5. Ng1-f3+

>



Alain Brobecker (abrobecker at yahoo.com) |_ _ _ |_
http://abrobecker.free.fr/ |_)(_|(_|| ) of Arm's Tech


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