MESON Chess Problem Database
Problem Display
PID: 133536 (4Nn2/5Bp1/1nKP4/2b5/Rp1pk1P1/P5Q1/5P1B/8 w - - 0 1)
Morra, Juan Carlos
The Field, 1961
(First published on Thu May 18 1961)
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Bxd6
- 2.Sxd6#
- 1...Sxa4
- 2.Bd5#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sfd7
- 2.Bg6#
- 1...Sh7
- 2.Bg6#
- 1...bxa3
- 2.Qe3#
- 1...b3
- 2.Qe3#
- 1...d3
- 2.Qf4#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Bxd6
- Tries
- 1.Sxg7?
- 1...Sxa4
- 2.Bd5#
- 1...bxa3
- 2.Qe3#
- 1...d3
- 2.Qf4#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sfd7
- 2.Bg6#
- 1...Sh7
- 2.Bg6#
- 1...b3
- 2.Qe3#
- 1...Bxd6!
- 1...Sxa4
- 1.Bc4?
- threat
- 2.Bd3#
- 2.Qf4#
- 2.Qg2#
- 2.Qd3#
- 1...Bxd6
- 2.Sxd6#
- 2.Bd3#
- 2.Qg2#
- 2.Qd3#
- 1...d3
- 2.Qf4#
- 2.Qxd3#
- 1...Sd5
- 2.Bd3#
- 2.Bxd5#
- 2.Qg2#
- 2.Qd3#
- 1...Se6
- 2.Bd3#
- 2.Qg2#
- 2.Qd3#
- 1...Sg6
- 2.Bd3#
- 2.Qg2#
- 2.Qd3#
- 1...g5
- 2.Sf6#
- 2.Bd3#
- 2.Qg2#
- 2.Qd3#
- 1...Sxc4!
- threat
- 1.Be6?
- threat
- 2.Bf5#
- 1...d3
- 2.Qf4#
- 1...g6
- 2.Sf6#
- 1...Sxe6!
- threat
- 1.Rxb4?
- threat
- 2.Qe3#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Bxb4!
- threat
- 1.Qh3?
- 1...Bxd6
- 2.Sxd6#
- 1...Sxa4
- 2.Bd5#
- 1...bxa3
- 2.Qe3#
- 1...b3
- 2.Qe3#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sfd7
- 2.Bg6#
- 1...Sh7
- 2.Bg6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...d3!
- 1...Bxd6
- 1.axb4?
- 1...Bxd6
- 2.Sxd6#
- 1...Sxa4
- 2.Bd5#
- 1...d3
- 2.Qf4#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sfd7
- 2.Bg6#
- 1...Sh7
- 2.Bg6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Bxb4!
- 1...Bxd6
- 1.d7?
- 1...Sxa4
- 2.Bd5#
- 1...Sbxd7
- 2.Bd5#
- 1...Sfxd7
- 2.Bg6#
- 1...bxa3
- 2.Qe3#
- 1...d3
- 2.Qf4#
- 1...b3
- 2.Qe3#
- 1...Bd6
- 2.Sxd6#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sh7
- 2.Bg6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Be7!
- 1...Sxa4
- 1.Sxg7?
- Keys
- 1.Bg1!
- 1...Bxd6
- 2.Sxd6#
- 1...Sxa4
- 2.Bd5#
- 1...bxa3
- 2.Qe3#
- 1...d3
- 2.f3#
- 1...Sc4
- 2.Bd5#
- 1...Sd5
- 2.Bxd5#
- 1...Sbd7
- 2.Bd5#
- 1...Sa8
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Se6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sfd7
- 2.Bg6#
- 1...Sh7
- 2.Bg6#
- 1...b3
- 2.Qe3#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Bxd6
- 1.Bg1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);XP(H)::S(J),XB(d)
- S(e);N_GUARD,XR(E)::B(I)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(a);P_SPINP(b),XP(C)::QAR1(D)
- P(a);P_SPINP(b)::QAR1(D)
- P(b);P_SPINP(a),SBLOCK::QAR1(D)
- P(f);N_GUARD::S(J)
- Tries
- Try
- S(J);XP(f)
- Vars
- S(e);N_GUARD,XR(E)::B(I)
- P(a);P_SPINP(b),XP(C)::QAR1(D)
- P(b);P_SPINP(a),SBLOCK::QAR1(D)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(a);P_SPINP(b)::QAR1(D)
- Refutation
- B(d);XP(H)
- Try
- B(I);
- Threat
- DUALS(4)
- Refutation
- S(e);XB(I)
- Try
- B(I);
- Threat
- B(I)
- Vars
- P(b);P_SPINP(a),SBLOCK::QAR1(D)
- P(f);N_GUARD::S(J)
- Refutation
- S(g);XB(I)
- Try
- R(E);P_PINP(b),XP(a)
- Threat
- QAR1(D)
- Vars
- S(e);N_GUARD,N_SPINP(b)::B(I)
- S(e);N_GUARD::B(I),XS(e)
- Refutation
- B(d);N_SPINP(b),XR(E)
- Try
- Q(D);
- Vars
- B(d);XP(H)::S(J),XB(d)
- S(e);N_GUARD,XR(E)::B(I)
- P(a);P_SPINP(b),XP(C)::QAR1(D)
- P(a);P_SPINP(b)::QAR1(D)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(f);N_GUARD::S(J)
- Refutation
- P(b);P_SPINP(a)
- Try
- P(C);XP(a)
- Vars
- B(d);XP(H)::S(J),XB(d)
- S(e);N_GUARD,XR(E)::B(I)
- P(b);SBLOCK::QAR1(D)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(f);N_GUARD::S(J)
- Refutation
- B(d);XP(C)
- Try
- P(H);
- Vars
- S(e);N_GUARD,XR(E)::B(I)
- S(e);N_GUARD,XP(H)::B(I)
- S(g);N_GUARD,XP(H)::B(I)
- P(a);P_SPINP(b),XP(C)::QAR1(D)
- P(b);P_SPINP(a),SBLOCK::QAR1(D)
- P(a);P_SPINP(b)::QAR1(D)
- B(d);N_GUARD::S(J),XB(d)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(f);N_GUARD::S(J)
- Refutation
- B(d);
- Try
- Actual
- B(B);
- Vars
- B(d);XP(H)::S(J),XB(d)
- S(e);N_GUARD,XR(E)::B(I)
- P(a);P_SPINP(b),XP(C)::QAR1(D)
- P(b);P_SPINP(a),SBLOCK::P(A)
- S(e);N_GUARD::B(I)
- S(e);N_GUARD::B(I),XS(e)
- S(g);N_GUARD::B(I)
- S(g);N_GUARD::B(I),XS(g)
- P(a);P_SPINP(b)::QAR1(D)
- P(f);N_GUARD::S(J)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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