MESON Chess Problem Database
Problem Display
PID: 79031 (1NbQ2Kb/8/4p3/n1BPkp2/4P2R/8/8/8 w - - 0 1)
Morra, Juan Carlos
The Tablet, 1961
(First published on Sat Oct 28 1961)
#2
7 + 6
| 15239 | Valois Notebooks | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ba6
- 2.Sd7#
- 1...Bb7
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf6
- 2.Qc7#
- 2.Qd6#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...fxe4
- 2.Qg5#
- 1...exd5
- 2.Qd6#
- 1...Ba6
- Tries
- 1.Kf7?
- threat
- 2.Qc7#
- 2.Qd6#
- 2.Qxh8#
- 1...fxe4
- 2.Qg5#
- 1...Bd7
- 2.Sxd7#
- 2.Qc7#
- 2.Qxh8#
- 1...Bf6
- 2.Qxf6#
- 2.Qc7#
- 2.Qd6#
- 1...Bg7
- 2.Qc7#
- 2.Qd6#
- 1...Sc4
- 2.Sc6#
- 2.Qxh8#
- 1...Sb7
- 2.Sc6#
- 2.Qxh8#
- 1...f4!
- threat
- 1.Kxh8?
- 1...fxe4
- 2.Qg5#
- 1...exd5
- 2.Qd6#
- 1...Ba6
- 2.Sd7#
- 1...Bb7
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...f4!
- 1...fxe4
- 1.Qg5?
- 1...Ba6
- 2.Sd7#
- 1...Bb7
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf6
- 2.Qf4#
- 1...Bg7
- 2.Qxg7#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...exd5!
- 1...Ba6
- 1.Qe7?
- 1...fxe4
- 2.Qg5#
- 1...Ba6
- 2.Sd7#
- 2.Qxe6#
- 1...Bb7
- 2.Sd7#
- 2.Qxe6#
- 1...Bd7
- 2.Sxd7#
- 1...Bf6
- 2.Qd6#
- 2.Qc7#
- 1...Bg7
- 2.Qxg7#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...f4!
- 1...fxe4
- 1.Qxc8?
- threat
- 2.Sd7#
- 2.Qxe6#
- 1...fxe4
- 2.Qxe6#
- 1...exd5
- 2.Qxf5#
- 1...f4
- 2.Qxe6#
- 1...Kf6!
- threat
- 1.Kf7?
- Keys
- 1.Qf8!
- 1...fxe4
- 2.Rh5#
- 1...exd5
- 2.Qd6#
- 1...f4
- 2.Qxf4#
- 1...Ba6
- 2.Sd7#
- 1...Bb7
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Bf6
- 2.Qd6#
- 1...Bg7
- 2.Qxg7#
- 1...Sb3
- 2.Sc6#
- 1...Sc4
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 1...fxe4
- 1.Qf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(e);N_GUARD::S(E)
- B(e);N_GUARD::S(E),XB(e)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- P(c);OGATEB,XP(A)::QAR2(F)
- P(d);XP(D)::QAB1(F)
- Tries
- Try
- K(G);S_FLIGHT
- Threat
- DUALS(3)
- Vars
- P(c);OGATEB,XP(A)::QAR2(F)
- Refutation
- P(c);
- Try
- K(G);P-FLIGHT,XB(f)
- Vars
- P(c);OGATEB,XP(A)::QAR2(F)
- P(d);XP(D)::QAB1(F)
- B(e);N_GUARD::S(E)
- B(e);N_GUARD::S(E),XB(e)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- Refutation
- P(c);
- Try
- Q(F);P_PINP(c)
- Vars
- B(e);N_GUARD::S(E)
- B(e);N_GUARD::S(E),XB(e)
- B(f);SBLOCK::QAB1(F)
- B(f);N_GUARD::QAB(F),XB(f)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- Refutation
- P(d);XP(D)
- Try
- Q(F);P_PINP(d)
- Vars
- P(c);OGATEB,XP(A)::QAR2(F)
- B(e);N_GUARD::S(E),XB(e)
- B(f);N_GUARD::QAB(F),XB(f)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
- Refutation
- P(c);
- Try
- Q(F);XB(e)
- Threat
- DUALS(2)
- Vars
- P(c);XP(A)::QAR1(F),XP(d)
- P(d);OGATE,XP(D)::QAR1(F),XP(c)
- P(c);::QAR1(F),XP(d)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- Q(F);
- Vars
- P(c);OGATEB,SBLOCK,XP(A)::R(B)
- P(d);XP(D)::QAB1(F)
- P(c);OGATE::QAB1(F),XP(c)
- B(e);N_GUARD::S(E)
- B(e);N_GUARD::S(E),XB(e)
- B(f);SBLOCK::QAB1(F)
- B(f);N_GUARD::QAB(F),XB(f)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD::S(E),XS(a)
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