MESON Chess Problem Database
Problem Display
PID: 63746 (2b3B1/p1r5/5BN1/1QpP1kPP/K3R3/2pnpPP1/1pN3r1/3n3q w - - 0 1)
Kopnin, Aleksey Grigorevich
4th HM., Source?, 1974
#2
12 + 12
| 3771 | FIDE Album (1974-1976) | 1980 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sh4#
- 1...Qf1
- 2.Sh4#
- 1...Qg1
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Rxc2
- 2.g4#
- 1...Rd2
- 2.g4#
- 1...Re2
- 2.g4#
- 1...Rf2
- 2.g4#
- 1...Rh2
- 2.g4#
- 1...Rc6
- 2.Se7#
- 1...Rd7
- 2.Be6#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bb7
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 2.Re5#
- 1...Se1
- 2.Rf4#
- 2.Re5#
- 1...S3f2
- 2.Rf4#
- 2.Re5#
- 1...Sb4
- 2.Rf4#
- 2.Re5#
- 1...Sf4
- 2.Rxf4#
- 2.Re5#
- 1...Se5
- 2.Rf4#
- 2.Rxe5#
- 1...c4
- 2.Sd4#
- 1...Qe1
- Tries
- 1.Bh7?
- threat
- 2.Sh4#
- 2.Se7#
- 1...Qh4
- 2.Sxh4#
- 2.Se7#
- 1...Re7
- 2.Sh4#
- 2.Sxe7#
- 1...Rxh7!
- threat
- 1.Rxe3?
- threat
- 2.Qxd3#
- 1...Qh4+
- 2.Sxh4#
- 1...Qf1
- 2.Sh4#
- 1...Rd2
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...S3f2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...c4
- 2.Sd4#
- 1...S1f2!
- threat
- 1.Rb4?
- threat
- 2.Qxd3#
- 1...Qf1
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Rd2
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c4
- 2.Sd4#
- 1...Sxb4!
- threat
- 1.Rd4?
- threat
- 2.Qxd3#
- 1...Qf1
- 2.Sh4#
- 1...Qh4
- 2.Sxh4#
- 1...Rd2
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c4!
- threat
- 1.Rg4?
- threat
- 2.Qxd3#
- 1...Qf1
- 2.Sh4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c4
- 2.Sd4#
- 1...Rd2!
- threat
- 1.Rh4?
- threat
- 2.Qxd3#
- 1...Qxh4+
- 2.Sxh4#
- 1...Rd2
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c4
- 2.Sd4#
- 1...Qf1!
- threat
- 1.Re6?
- threat
- 2.Qxd3#
- 1...Qh4+
- 2.Sxh4#
- 1...Qf1
- 2.Sh4#
- 1...Rd2
- 2.g4#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...S3f2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...c4
- 2.Sd4#
- 1...Ba6!
- threat
- 1.Re7?
- threat
- 2.Qxd3#
- 1...Qh4+
- 2.Sxh4#
- 1...Rxe7
- 2.Sxe7#
- 1...Qf1
- 2.Sh4#
- 1...Rd2
- 2.g4#
- 1...Ba6
- 2.Be6#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...S3f2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...c4
- 2.Sd4#
- 1...Bd7!
- threat
- 1.Qxd3?
- threat
- 2.Rxe3#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rh4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Qf1
- 2.Sh4#
- 2.Rf4#
- 2.Re5#
- 1...Qh4
- 2.Sxh4#
- 2.Rf4#
- 2.Rg4#
- 2.Rxh4#
- 1...Rd2
- 2.Rf4#
- 2.Re5#
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 2.Rf4#
- 2.Re5#
- 2.Re6#
- 2.Rxe7#
- 1...Ba6
- 2.Be6#
- 2.Rc4#
- 2.Rf4#
- 2.Re5#
- 1...Be6
- 2.Bxe6#
- 2.Rxe3#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rh4#
- 2.Re5#
- 2.Rxe6#
- 1...Sf2
- 2.Sxe3#
- 2.Rf4#
- 2.Re5#
- 1...e2
- 2.Rxe2#
- 2.Re3#
- 2.Rb4#
- 2.Rc4#
- 2.Rd4#
- 2.Rf4#
- 2.Rg4#
- 2.Rh4#
- 2.Re5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...c4
- 2.Sd4#
- 2.Rxc4#
- 2.Rf4#
- 2.Re5#
- 1...Bd7+!
- threat
- 1.Qd7+?
- 1...Rxd7
- 2.Be6#
- 1...Bxd7+!
- 1...Rxd7
- 1.d6?
- threat
- 2.Sd4#
- 1...Rxc2
- 2.g4#
- 1...Se5
- 2.Rf4#
- 2.Rxe5#
- 1...Qxh5!
- threat
- 1.Bh7?
- Keys
- 1.Re8!
- threat
- 2.Qxd3#
- 1...Qh4+
- 2.Sxh4#
- 1...Qf1
- 2.Sh4#
- 1...Rd2
- 2.g4#
- 1...Re7
- 2.Sxe7#
- 1...Ba6
- 2.Be6#
- 1...Bd7
- 2.Se7#
- 1...S1f2
- 2.Sxe3#
- 1...Sc1
- 2.Re5#
- 1...Se1
- 2.Re5#
- 1...S3f2
- 2.Re5#
- 1...Sb4
- 2.Re5#
- 1...Sf4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...c4
- 2.Sd4#
- threat
- 1.Re8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 10
- Sets
- Q(b);N_GUARD::S(K)
- Q(b);N_GUARD,P_PINR(E)::S(K),XQ(b)
- R(d);N_GUARD,XS(A)::P(C)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K)
- R(k);S_CUTB(l)::B(L)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);N_GUARD::B(L),XB(l)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- P(h);N_GUARD::S(A)
- Tries
- Try
- B(L);
- Threat
- DUALS(2)
- Refutation
- R(k);XB(L)
- Try
- R(E);XP(g)
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);CHECK,N_GUARD::S(K),XQ(b)
- Q(b);N_GUARD::S(K)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- S(a);
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);N_GUARD::S(K)
- Q(b);N_GUARD,P_PINR(E)::S(K),XQ(b)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- S(f);XR(E)
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);N_GUARD::S(K)
- Q(b);N_GUARD,P_PINR(E)::S(K),XQ(b)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- Refutation
- P(h);
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);N_GUARD::S(K)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- R(d);
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);CHECK,XR(E)::S(K),XQ(b)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- Q(b);
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);CHECK,N_GUARD::S(K),XQ(b)
- Q(b);N_GUARD::S(K)
- R(d);N_GUARD::P(C)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- B(l);
- Try
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);CHECK,N_GUARD::S(K),XQ(b)
- R(k);XR(E)::S(K),XR(k)
- Q(b);N_GUARD::S(K)
- R(d);N_GUARD::P(C)
- B(l);N_GUARD::B(L)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
- Refutation
- B(l);P_PINQ(F)
- Try
- Q(F);XS(f)
- Threat
- DUALS(11)
- Refutation
- B(l);CHECK
- Try
- Q(F);CHECK
- Vars
- R(k);XQ(F)::B(L)
- Refutation
- B(l);CHECK,XQ(F)
- Try
- P(G);P_PINP(h)
- Threat
- S(A)
- Vars
- R(d);N_GUARD,XS(A)::P(C)
- Refutation
- Q(b);XP(I)
- Try
- Actual
- R(E);
- Threat
- QAB(F),XS(f)
- Vars
- Q(b);CHECK,N_GUARD::S(K),XQ(b)
- Q(b);N_GUARD::S(K)
- R(d);N_GUARD::P(C)
- R(k);N_GUARD::S(K),XR(k)
- B(l);N_GUARD::B(L)
- B(l);P_PINQ(F),S_CUTR(k)::S(K)
- S(a);N_GUARD::S(A),XP(g)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
- P(h);N_GUARD::S(A)
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