MESON Chess Problem Database
Problem Display
PID: 272250 (8/2bN4/1q6/1p3n1R/1Q1PkP2/4p3/B1P1N1P1/4K3 w - - 0 1)
Simoni, Francesco
Due Alfieri, 1981
#2
10 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sc5#
- 2.Sf6#
- 1...Qa5
- 2.Sc5#
- 2.Sf6#
- 1...Qc5
- 2.Sxc5#
- 2.Sf6#
- 1...Qa7
- 2.Sf6#
- 1...Qa6
- 2.Sc5#
- 1...Qe6
- 2.Sc5#
- 1...Qf6
- 2.Sc5#
- 2.Sxf6#
- 1...Qg6
- 2.Sc5#
- 1...Qh6
- 2.Sc5#
- 1...Qb7
- 2.Sc5#
- 2.Sf6#
- 1...Qb8
- 2.Sc5#
- 2.Sf6#
- 1...Bxf4
- 2.Sc3#
- 1...Bd6
- 2.Sf6#
- 1...Sg3
- 2.Bd5#
- 1...Sxd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Sd6
- 2.Sf6#
- 2.Bd5#
- 2.Re5#
- 1...Sh6
- 2.Bd5#
- 1...Sg7
- 2.Bd5#
- 1...Qxd4
- Tries
- 1.Sxb6?
- threat
- 2.Bd5#
- 1...Se7
- 2.d5#
- 1...Bxb6!
- threat
- 1.Bb1?
- threat
- 2.c4#
- 1...Qxd4
- 2.Sf6#
- 1...Sxd4
- 2.c3#
- 1...Kd5!
- threat
- 1.Qc3?
- threat
- 2.Qd3#
- 1...Qa5
- 2.Sc5#
- 2.Sf6#
- 1...Qxd4!
- threat
- 1.Qe7+?
- 1...Qe6
- 2.Sc5#
- 2.Sf6#
- 1...Be5
- 2.Qxe5#
- 1...Sxe7!
- 1...Qe6
- 1.Qb1?
- threat
- 2.c3#
- 2.c4#
- 1...Qa5+
- 2.c3#
- 1...Sxd4
- 2.Bd5#
- 1...Qxd4!
- threat
- 1.Qxb5?
- threat
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 2.Qxf5#
- 1...Qxd4
- 2.Qxf5#
- 1...Qxb5
- 2.Sf6#
- 1...Sxd4
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Qc6
- 2.Qd3#
- 2.Qxc6#
- 2.Qxf5#
- 1...Qc5
- 2.Sxc5#
- 2.Sf6#
- 2.Qd3#
- 1...Qa6
- 2.Sc5#
- 2.Bd5#
- 2.Qd5#
- 2.Qxf5#
- 1...Qd6
- 2.Qd3#
- 2.Qxf5#
- 1...Qe6
- 2.Sc5#
- 2.Qd3#
- 1...Qf6
- 2.Sc5#
- 2.Sxf6#
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Qg6
- 2.Sc5#
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Qb7
- 2.Sc5#
- 2.Sf6#
- 2.Qd3#
- 2.Qxf5#
- 2.Qxb7#
- 1...Be5
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 2.Qxe5#
- 1...Sg3
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Sh4
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Sd6
- 2.Sf6#
- 2.Bd5#
- 2.Re5#
- 2.Qd3#
- 2.Qd5#
- 2.Qe5#
- 1...Sh6
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Se7
- 2.Qd3#
- 1...Sg7
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...Qa5+!
- threat
- 1.d5+?
- 1...Qd4
- 2.Sc5#
- 2.Sf6#
- 1...Sd4!
- 1...Qd4
- 1.Sxb6?
- Keys
- 1.c3!
- threat
- 2.Qb1#
- 1...Kd3
- 2.Bb1#
- 2.Qb1#
- 1...Qxd4
- 2.Sc5#
- 1...Sxd4
- 2.Bb1#
- threat
- 1.c3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(e);N_GUARD::S(J)
- B(f);SBLOCK,XP(H)::S(D)
- B(f);S_CUTQ(e)::S(J)
- S(d);::B(B)
- S(d);P_SPINS(d),XP(G)::B(B)
- Tries
- Try
- S(J);XQ(e)
- Threat
- B(B)
- Vars
- S(d);N_GUARD::QAR(F)+P(G)
- Refutation
- B(f);XS(J)
- Try
- B(B);
- Threat
- B(B)+P(C)
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XP(G)::S(J)
- S(d);P_SPINS(d),XP(G)::B(B)+P(C)
- Refutation
- K(b);P_SPINS(d),S_FLIGHT
- Try
- Q(F);
- Threat
- QAB1(F)
- Refutation
- Q(e);XP(G)
- Try
- Q(F);CHECK
- Vars
- B(f);N_GUARD,P_SPINB(f)::QAR1(F),XB(f)
- Refutation
- S(d);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK::QAB(F)+P(C)
- S(d);XP(G)::B(B)
- Refutation
- Q(e);XP(G)
- Try
- Q(F);XP(c)
- Threat
- DUALS(4)
- Vars
- Q(e);XP(G)::QAB1(F),XS(d)
- Q(e);N_GUARD,XQ(F)::S(J)
- S(d);::QAB1(F)
- Refutation
- Q(e);CHECK
- Try
- P(G);CHECK
- Refutation
- S(d);P_SPINS(d)
- Try
- Actual
- P(C);
- Threat
- QAB(F)
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XP(G)::S(J)
- S(d);P_SPINS(d),XP(G)::B(B)
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