MESON Chess Problem Database
Problem Display
PID: 133960 (5N2/4Bp2/7N/1Kn1k3/2Pb2R1/Q3p3/8/8 w - - 0 1)
Morra, Juan Carlos
The Field, 1963
(First published on Thu Apr 25 1963)
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qxc5#
- 2.Qxa1#
- 1...Bb2
- 2.Qxb2#
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 2.Qxc3#
- 1...Sb3
- 2.Qd6#
- 1...Sd3
- 2.Qd6#
- 1...Sa4
- 2.Qd6#
- 1...Sa6
- 2.Qd6#
- 1...Se6
- 2.Sd7#
- 2.Qd6#
- 1...Sd7
- 2.Qd6#
- 1...e2
- 2.Qg3#
- 1...f5
- 2.Sf7#
- 1...Ba1
- Tries
- 1.Sd7+?
- 1...Sxd7
- 2.Qd6#
- 1...Ke6!
- 1...Sxd7
- 1.Bh4?
- 1...Sb3
- 2.Qe7#
- 1...Ba1
- 2.Qxc5#
- 1...Bb2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Sd3
- 2.Qe7#
- 1...Sa4
- 2.Qe7#
- 1...Se4
- 2.Qe7#
- 1...Sa6
- 2.Qe7#
- 1...Se6
- 2.Sd7#
- 1...Sb7
- 2.Qe7#
- 1...Sd7
- 2.Qe7#
- 1...e2
- 2.Qg3#
- 1...f5
- 2.Sf7#
- 1...f6
- 2.Bg3#
- 1...Kd6!
- 1...Sb3
- 1.Bxc5?
- threat
- 2.Bxd4#
- 1...Kf6
- 2.Bxd4#
- 1...Ba1
- 2.Qxa1#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bxc5!
- threat
- 1.Qd3?
- threat
- 2.Sxf7#
- 2.Qf5#
- 2.Qxd4#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 1...Ba1
- 2.Sxf7#
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Bb2
- 2.Sxf7#
- 2.Qf5#
- 2.Qd5#
- 2.Qd6#
- 1...Bc3
- 2.Sxf7#
- 2.Qf5#
- 2.Qxc3#
- 2.Qd5#
- 2.Qd6#
- 1...Sb3
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...Se6
- 2.Sxf7#
- 2.Sd7#
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...f5
- 2.Sf7#
- 2.Qxf5#
- 2.Qxd4#
- 1...f6
- 2.Sf7#
- 2.Qf5#
- 2.Qxd4#
- 1...Sxd3!
- threat
- 1.Qxe3+?
- 1...Se4
- 2.Rxe4#
- 2.Qf4#
- 2.Qxe4#
- 1...Bxe3!
- 1...Se4
- 1.Qa6?
- threat
- 2.Bf6#
- 2.Qd6#
- 2.Qf6#
- 1...Se4
- 2.Sd7#
- 1...Se6
- 2.Sd7#
- 2.Qd6#
- 1...Sb7
- 2.Sd7#
- 2.Bf6#
- 2.Qf6#
- 1...Sd7
- 2.Sxd7#
- 2.Qd6#
- 1...f6
- 2.Sg6#
- 2.Bd6#
- 2.Bxf6#
- 2.Qd6#
- 2.Qxf6#
- 1...Sxa6!
- threat
- 1.Qa7?
- threat
- 2.Qb8#
- 2.Qc7#
- 1...Sa6
- 2.Qxd4#
- 1...Se6
- 2.Sd7#
- 1...Sb7
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 2.Qc7#
- 1...Se4!
- threat
- 1.Qa8?
- threat
- 2.Qd5#
- 2.Qb8#
- 1...Se4
- 2.Rxe4#
- 2.Qxe4#
- 2.Qd5#
- 1...Sa6
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Se6
- 2.Sd7#
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Sd7
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Sb7!
- threat
- 1.Sd7+?
- Keys
- 1.Bd8!
- 1...Kd6
- 2.Sxf7#
- 1...Sb3
- 2.Qe7#
- 1...Ba1
- 2.Qxc5#
- 1...Bb2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Sd3
- 2.Qe7#
- 1...Sa4
- 2.Qe7#
- 1...Se4
- 2.Qe7#
- 1...Sa6
- 2.Qe7#
- 1...Se6
- 2.Sd7#
- 1...Sb7
- 2.Qe7#
- 1...Sd7
- 2.Qe7#
- 1...e2
- 2.Qg3#
- 1...f5
- 2.Sf7#
- 1...f6
- 2.Bc7#
- 1...Kd6
- 1.Bd8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(c);OGATE::QAB1(A)
- P(a);OGATE::QAB(A)
- P(e);SBLOCK::S(E)
- Tries
- Try
- S(G);CHECK
- Vars
- S(c);OGATE,XS(G)::QAB1(A)
- Refutation
- K(d);P-FLIGHT
- Try
- B(F);
- Vars
- S(c);OGATE::QAR2(A)
- B(b);N_GUARD::QAR2(A),XS(c)
- S(c);N_GUARD,SBLOCK::S(G)
- P(a);OGATE::QAB(A)
- P(e);SBLOCK::S(E)
- P(e);SBLOCK::B(F)
- Refutation
- K(d);P_SPINS(c),S_FLIGHT
- Try
- B(F);XS(c)
- Threat
- B(F),XB(b)
- Vars
- K(d);S_FLIGHT::B(F),XB(b)
- B(b);OGATEB::QAB(A),XB(b)
- Refutation
- B(b);XB(F)
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);CHECK,XP(a)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(c);N_GUARD::S(G)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE::QAB1(A),XB(b)
- S(c);N_GUARD,SBLOCK::S(G)
- Refutation
- S(c);
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- S(c);
- Try
- Actual
- B(F);
- Vars
- K(d);P_SPINS(c),S_FLIGHT::S(E),XP(e)
- S(c);OGATE::QAR2(A)
- B(b);N_GUARD::QAR2(A),XS(c)
- S(c);N_GUARD,SBLOCK::S(G)
- P(a);OGATE::QAB(A)
- P(e);SBLOCK::S(E)
- P(e);SBLOCK::B(F)
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