MESON Chess Problem Database
Problem Display
PID: 119129 (4R3/3P4/1KpB4/Nn2p2r/3k1N2/3ppBQb/1Pq5/8 w - - 0 1)
Wirtanen, Erkki Aukusti
Sinfonie Scacchistiche, 1970
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Bc5#
- 1...Qd1
- 2.Bc5#
- 1...Qb3
- 2.Bc5#
- 1...Qa4
- 2.Bc5#
- 1...Qd2
- 2.Bc5#
- 1...Qe2
- 2.Bc5#
- 1...Qf2
- 2.Bc5#
- 1...Qg2
- 2.Bc5#
- 1...Qh2
- 2.Bc5#
- 1...Qc5+
- 2.Bxc5#
- 1...Rh4
- 2.Bxe5#
- 1...Rf5
- 2.Se6#
- 1...Rh6
- 2.Bxe5#
- 1...Rh7
- 2.Bxe5#
- 1...Rh8
- 2.Bxe5#
- 1...Bf1
- 2.Se6#
- 1...Bg2
- 2.Se6#
- 1...Bf5
- 2.Bxe5#
- 1...Be6
- 2.Sxe6#
- 1...Sc3
- 2.Bc5#
- 1...e2
- 2.Qf2#
- 2.Qg1#
- 1...exf4
- 2.Qxf4#
- 1...e4
- 2.Rxe4#
- 1...Qb1
- Tries
- 1.Se2+?
- 1...Qxe2
- 2.Bc5#
- 1...dxe2!
- 1...Qxe2
- 1.Sxh5?
- threat
- 2.Bxe5#
- 2.Qxe5#
- 1...Qc5+
- 2.Bxc5#
- 1...Sxd6
- 2.Qxe5#
- 1...e2
- 2.Qf2#
- 2.Qxe5#
- 2.Qg1#
- 1...e4
- 2.Qe5#
- 1...Qh2
- 2.Bc5#
- 2.Bxe5#
- 1...d2!
- threat
- 1.Sxc6+?
- 1...Kc4
- 2.Bd5#
- 1...Qxc6+!
- 1...Kc4
- 1.Qh4?
- threat
- 2.Se2#
- 2.Se6#
- 1...Qc5+
- 2.Bxc5#
- 1...Qxb2
- 2.Se2#
- 1...Rxh4
- 2.Bxe5#
- 1...exf4
- 2.Qxf4#
- 1...e2
- 2.Qf2#
- 1...Qe2
- 2.Sxe2#
- 2.Se6#
- 2.Bc5#
- 1...Bg4
- 2.Se6#
- 1...Be6
- 2.Se2#
- 2.Sxe6#
- 1...e4
- 2.Rxe4#
- 1...d2!
- threat
- 1.d8Q?
- threat
- 2.Bc5#
- 2.Bxe5#
- 1...Qc5+
- 2.Bxc5#
- 1...Qxb2
- 2.Bxe5#
- 1...Sxd6
- 2.Qxd6#
- 1...exf4
- 2.Bc5#
- 2.Be5#
- 2.Qxf4#
- 1...e2
- 2.Bc5#
- 2.Qf2#
- 2.Qg1#
- 1...Be6
- 2.Sxe6#
- 2.Bc5#
- 1...e4
- 2.Bc5#
- 2.Be5#
- 2.Rxe4#
- 1...c5
- 2.Bxc5#
- 2.Bxe5#
- 1...Bd7!
- threat
- 1.d8R?
- threat
- 2.Bc5#
- 2.Bxe5#
- 1...Qc5+
- 2.Bxc5#
- 1...Qxb2
- 2.Bxe5#
- 1...Sxd6
- 2.Rxd6#
- 1...exf4
- 2.Bc5#
- 2.Be5#
- 2.Qxf4#
- 1...e2
- 2.Bc5#
- 2.Qf2#
- 2.Qg1#
- 1...Be6
- 2.Sxe6#
- 2.Bc5#
- 1...e4
- 2.Bc5#
- 2.Be5#
- 2.Rxe4#
- 1...c5
- 2.Bxc5#
- 2.Bxe5#
- 1...Bd7!
- threat
- 1.Se2+?
- Keys
- 1.Qg6!
- threat
- 2.Qe4#
- 1...Qc5+
- 2.Bxc5#
- 1...Qxb2
- 2.Qxd3#
- 1...Sxd6
- 2.Qxd6#
- 1...d2
- 2.Se2#
- 1...Rf5
- 2.Se6#
- 1...Bf5
- 2.Bxe5#
- 1...Sc3
- 2.Bc5#
- 1...e4
- 2.Rxe4#
- 2.Qxe4#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 18
- Sets
- Q(a);N_GUARD::B(G)
- Q(a);CHECK,N_GUARD::B(G),XQ(a)
- R(h);N_GUARD::B(G),XP(g)
- R(h);S_CUTB(d)::S(D)
- B(d);N_GUARD::S(D)
- B(d);S_CUTR(h)::B(G),XP(g)
- B(d);N_GUARD::S(D),XB(d)
- S(f);S_CUTQ(a)::B(G)
- P(g);OGATE,XS(D)::QAR2(C),XP(g)
- P(g);OGATE::R1(I),XP(g)
- Tries
- Try
- S(D);CHECK
- Vars
- Q(a);XS(D)::B(G)
- Refutation
- P(b);XS(D)
- Try
- S(D);XR(h)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::B(G),XQ(a)
- S(f);XB(G)::QAB1(C),XP(g)
- P(g);::QAB1(C)
- Refutation
- P(b);
- Try
- S(E);CHECK,XP(i)
- Vars
- K(e);P-FLIGHT::B(B)
- Refutation
- Q(a);CHECK,XS(E)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::B(G),XQ(a)
- Q(a);XP(A)::QAR(C)+S(D),DCHECK
- R(h);N_GUARD,XQ(C)::B(G),XP(g)
- P(g);OGATE,P_SPINP(g),XS(D)::QAR2(C),XP(g)
- P(c);OGATEB::QAB(C)
- B(d);::S(D)
- P(g);OGATE::R1(I),XP(g)
- Refutation
- P(b);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAR(H)+B(G),DCHECK,XQ(a)
- Q(a);XP(A)::QAR(H)+B(G),DCHECK,XP(g)
- S(f);OGATE,P_SPINS(f),XB(G)::QAR2(H),XS(f)
- Refutation
- B(d);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::R(H)+B(G),DCHECK,XQ(a)
- Q(a);XP(A)::R(H)+B(G),DCHECK,XP(g)
- S(f);OGATE,P_SPINS(f),XB(G)::R(H),XS(f)
- Refutation
- B(d);
- Try
- Actual
- Q(C);
- Threat
- QAR1(C)
- Vars
- Q(a);CHECK,N_GUARD::B(G),XQ(a)
- Q(a);N_GUARD,XP(A)::QAR1(C),XP(b)
- S(f);OGATE,XB(G)::QAR2(C),XS(f)
- P(b);N_GUARD,S_CUTQ(a)::S(D)
- R(h);S_CUTB(d)::S(D)
- B(d);S_CUTR(h)::B(G),XP(g)
- S(f);S_CUTQ(a)::B(G)
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