MESON Chess Problem Database
Problem Display
PID: 267054 (1K6/N4p2/pk1r3R/pbb1B3/3P4/1q6/1N5Q/1R6 w - - 0 1)
Castellari, Umberto
L'Italia Scacchistica, 1931
#2
8 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sc4#
- 1...Qa4
- 2.Sxa4#
- 1...Qc4
- 2.Sxc4#
- 1...Qd5
- 2.Sa4#
- 1...Qe6
- 2.Sa4#
- 1...Qa3
- 2.Sc4#
- 1...Qc3
- 2.Sa4#
- 1...Qd3
- 2.Sa4#
- 1...Qe3
- 2.Sa4#
- 2.Sc4#
- 1...Qf3
- 2.Sa4#
- 2.Sc4#
- 1...Qg3
- 2.Sa4#
- 2.Sc4#
- 1...Qh3
- 2.Sa4#
- 2.Sc4#
- 1...Rc6
- 2.Sc8#
- 2.Bc7#
- 1...Re6
- 2.Bc7#
- 1...Rf6
- 2.Bc7#
- 1...Rg6
- 2.Bc7#
- 1...Rxh6
- 2.Bc7#
- 1...Bf1
- 2.Sa4#
- 1...Be2
- 2.Sa4#
- 1...Bd3
- 2.Sa4#
- 1...Ba4
- 2.Sxa4#
- 2.Sc4#
- 1...Bc4
- 2.Sa4#
- 2.Sxc4#
- 1...Bc6
- 2.Sc4#
- 1...Bd7
- 2.Sc4#
- 1...Be8
- 2.Sc4#
- 1...Bxd4
- 2.Bxd4#
- 1...Qd1
- Tries
- 1.Rxd6+?
- 1...Bc6
- 2.Sa4#
- 2.Sc4#
- 2.Rxc6#
- 1...Bxd6+!
- 1...Bc6
- 1.Qh1?
- threat
- 2.Sc8#
- 2.Qb7#
- 1...Bxd4
- 2.Bxd4#
- 1...Qd5
- 2.Sa4#
- 1...Qe6
- 2.Sa4#
- 2.Qb7#
- 1...Qf3
- 2.Sa4#
- 2.Sc4#
- 1...Qh3
- 2.Sa4#
- 2.Sc4#
- 2.Qb7#
- 1...Rc6
- 2.Sc8#
- 2.Bc7#
- 1...Bf1
- 2.Sa4#
- 2.Qb7#
- 1...Be2
- 2.Sa4#
- 2.Qb7#
- 1...Bd3
- 2.Sa4#
- 2.Qb7#
- 1...Ba4
- 2.Sxa4#
- 2.Sc4#
- 2.Qb7#
- 1...Bc4
- 2.Sa4#
- 2.Sxc4#
- 2.Qb7#
- 1...Bc6
- 2.Sc4#
- 1...Bd7
- 2.Sc4#
- 2.Qb7#
- 1...Be8
- 2.Sc4#
- 2.Qb7#
- 1...a4!
- threat
- 1.Qg2?
- threat
- 2.Sc8#
- 2.Qb7#
- 1...Bxd4
- 2.Bxd4#
- 1...Qd5
- 2.Sa4#
- 1...Qe6
- 2.Sa4#
- 2.Qb7#
- 1...Qf3
- 2.Sa4#
- 2.Sc4#
- 1...Qh3
- 2.Sa4#
- 2.Sc4#
- 2.Qb7#
- 1...Rc6
- 2.Sc8#
- 2.Bc7#
- 1...Bf1
- 2.Sa4#
- 2.Qb7#
- 1...Be2
- 2.Sa4#
- 2.Qb7#
- 1...Bd3
- 2.Sa4#
- 2.Qb7#
- 1...Ba4
- 2.Sxa4#
- 2.Sc4#
- 2.Qb7#
- 1...Bc4
- 2.Sa4#
- 2.Sxc4#
- 2.Qb7#
- 1...Bc6
- 2.Sc4#
- 1...Bd7
- 2.Sc4#
- 2.Qb7#
- 1...Be8
- 2.Sc4#
- 2.Qb7#
- 1...a4!
- threat
- 1.Qh4?
- threat
- 2.Qd8#
- 1...Bxd4
- 2.Bxd4#
- 2.Qxd4#
- 1...Qe6
- 2.Sa4#
- 1...Rf6
- 2.Bc7#
- 1...Bc6
- 2.Sc4#
- 1...f6!
- threat
- 1.Rxd6+?
- Keys
- 1.Bf6!
- threat
- 2.Bd8#
- 1...Rd8+
- 2.Bxd8#
- 1...Rxf6
- 2.Qc7#
- 1...Bxd4
- 2.Bxd4#
- 1...Qe6
- 2.Sa4#
- 1...Bc6
- 2.Sc4#
- threat
- 1.Bf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD,S_CUTB(c)::S(B)
- Q(a);N_GUARD,S_CUTB(c)::S(B),XQ(a)
- Q(a);N_GUARD,N_SPINR(g),S_CUTB(c)::S(B)
- R(g);OGATE::B(E)
- R(g);N_SPINR(g),OGATE,XR(F)::B(E)
- B(c);N_GUARD,S_CUTQ(a)::S(B)
- B(c);N_GUARD,N_SPINR(g),S_CUTQ(a)::S(B)
- B(d);OGATE,XP(D)::B(E),XB(d)
- Tries
- Try
- R(F);CHECK,XR(g)
- Refutation
- B(d);CHECK,XR(F)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(d);OGATE,XP(D)::B(E),XB(d)
- Q(a);N_GUARD,S_CUTB(c)::S(B)
- B(c);N_GUARD,N_SPINR(g),S_CUTQ(a)::S(B)
- Refutation
- P(b);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(d);OGATE,XP(D)::B(E),XB(d)
- Q(a);N_GUARD,S_CUTB(c)::S(B)
- B(c);N_GUARD,N_SPINR(g),S_CUTQ(a)::S(B)
- Refutation
- P(b);
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- Q(a);N_GUARD,N_SPINR(g),S_CUTB(c)::S(B)
- R(g);OGATE::B(E)
- B(c);N_GUARD,N_SPINR(g),S_CUTQ(a)::S(B)
- Refutation
- P(h);N_SPINR(g)
- Try
- Actual
- B(E);N_PINR(g)
- Threat
- B(E)
- Vars
- R(g);CHECK::R(F)+B(E),DCHECK,XR(g)
- R(g);OGATE,P_SPINR(g),XB(E)::QAB1(C)
- B(d);OGATE,XP(D)::B(E),XB(d)
- Q(a);N_GUARD,S_CUTB(c)::S(B)
- B(c);N_GUARD,S_CUTQ(a)::S(B)
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