MESON Chess Problem Database
Problem Display
PID: 48171 (8/1q3n1b/1p2B3/1R2B1p1/r2bk1N1/4N3/2P3K1/Q4R1n w - - 0 1)
Mochalkin, Oleksandr Viktorovich
Postnikov, Oleksandr Borisovich
4th HM., Vecherni Leningrad, 1990
#2
9 + 9
| 4827 | FIDE Album (1989-1991) | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Bxd5#
- 1...Qa6
- 2.Bd5#
- 1...Qc8
- 2.Bd5#
- 1...Qa7
- 2.Bd5#
- 1...Qc7
- 2.Bd5#
- 1...Qe7
- 2.Bd5#
- 1...Qb8
- 2.Bd5#
- 1...Ra2
- 2.Qxd4#
- 1...Ra3
- 2.Qxd4#
- 1...Ra5
- 2.Qxd4#
- 1...Ra6
- 2.Qxd4#
- 1...Ra7
- 2.Qxd4#
- 1...Ra8
- 2.Qxd4#
- 1...Bxe3
- 2.Sf6#
- 1...Bf5
- 2.Bxf5#
- 1...Bg8
- 2.Bf5#
- 1...Qd5
- Tries
- 1.Sd1?
- threat
- 2.Sf6#
- 1...Qd5
- 2.Bxd5#
- 1...Qe7
- 2.Bd5#
- 1...Bxe5!
- threat
- 1.Sc4?
- threat
- 2.Sd2#
- 2.Sf6#
- 2.Qxd4#
- 1...Rxa1
- 2.Sd2#
- 2.Sf6#
- 1...Bxa1
- 2.Sd2#
- 2.Sf6#
- 2.Re1#
- 1...Bxe5
- 2.Sd2#
- 1...Sxe5
- 2.Sd2#
- 2.Sd6#
- 2.Sf6#
- 1...Qd5
- 2.Sd2#
- 2.Sf6#
- 2.Bxd5#
- 1...Qd7
- 2.Sd2#
- 2.Sf6#
- 1...Qe7
- 2.Sd2#
- 2.Bd5#
- 2.Qxd4#
- 1...Bg1
- 2.Sd2#
- 2.Sf6#
- 1...Bb2
- 2.Sd2#
- 2.Sf6#
- 2.Re1#
- 2.Qe1#
- 1...Bf2
- 2.Sd2#
- 2.Sf6#
- 1...Bc3
- 2.Sf6#
- 1...Be3
- 2.Sf6#
- 1...Bc5
- 2.Sd2#
- 2.Sf6#
- 1...Rxc4!
- threat
- 1.Sd5?
- threat
- 2.Sdf6#
- 1...Qxd5
- 2.Bxd5#
- 1...Bxe5
- 2.Re1#
- 1...Qe7!
- threat
- 1.Re1?
- threat
- 2.Sf6#
- 1...Bxe5
- 2.Sd5#
- 1...Qd5
- 2.Bxd5#
- 1...Qe7
- 2.Bd5#
- 1...Sxe5!
- threat
- 1.Rf3?
- threat
- 2.Sf6#
- 1...Qd5
- 2.Bxd5#
- 1...Qe7
- 2.Bd5#
- 1...Bxe5!
- threat
- 1.Qc3?
- threat
- 2.Sf6#
- 2.Qd3#
- 1...Bxe5
- 2.Qd3#
- 1...Sxe5
- 2.Sf6#
- 1...Qd5
- 2.Bxd5#
- 2.Qd3#
- 1...Qe7
- 2.Bd5#
- 2.Qd3#
- 2.Qc6#
- 1...Ra3
- 2.Sf6#
- 2.Qxd4#
- 1...Sf2
- 2.Sxf2#
- 2.Sf6#
- 1...Bxc3!
- threat
- 1.Qd1?
- threat
- 2.Qf3#
- 2.Qd3#
- 1...Bxe5
- 2.Qd3#
- 1...Ra3
- 2.Qf3#
- 2.Qxd4#
- 1...Sf2
- 2.Qf3#
- 1...Sxe5!
- threat
- 1.Qe1?
- threat
- 2.Sf6#
- 1...Bxe5
- 2.Sf5#
- 1...Qd5
- 2.Bxd5#
- 1...Qe7
- 2.Bd5#
- 1...Bc5!
- threat
- 1.Qxa4?
- threat
- 2.Qxd4#
- 1...Sxe5
- 2.Rxe5#
- 1...Qd5
- 2.Bxd5#
- 1...Qd7!
- threat
- 1.Sd1?
- Keys
- 1.Sf5!
- threat
- 2.Sf6#
- 1...Bxe5
- 2.Qe1#
- 1...Bxf5
- 2.Bxf5#
- 1...Qd5
- 2.Bxd5#
- 1...Qe7
- 2.Bd5#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
- R(b);N_GUARD,P_PINP(C)::QAR1(A),XB(c)
- R(b);N_GUARD::QAR1(A),XB(c)
- B(c);SBLOCK,XS(E)::S(F)
- B(i);N_GUARD::B(I),XB(i)
- B(i);N_GUARD::B(I)
- Tries
- Try
- S(E);
- Threat
- S(F)
- Vars
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
- Refutation
- B(c);XB(H)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- B(c);XB(H)::S(E)
- B(c);::S(F)
- Refutation
- R(b);XS(E)
- Try
- S(E);
- Threat
- S(E)
- Vars
- Q(g);OGATE,XS(E)::B(I),XQ(g)
- B(c);N_GUARD,XB(H)::R(B)
- Refutation
- Q(g);
- Try
- R(B);
- Threat
- S(F)
- Vars
- B(c);N_GUARD,XB(H)::R(B)+S(E)
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
- Refutation
- S(h);XB(H)
- Try
- R(B);
- Threat
- S(F)
- Vars
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
- Refutation
- B(c);XB(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);XB(H)::QAB1(A)
- S(h);XB(H)::S(F)
- Refutation
- B(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);XB(H)::QAB1(A)
- S(a);::QAB1(A)
- Refutation
- S(h);XB(H)
- Try
- Q(A);
- Threat
- S(F)
- Vars
- B(c);N_GUARD,XB(H)::QAR(A)+S(E)
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
- Refutation
- B(c);
- Try
- Q(A);P_PINB(c),XR(b)
- Threat
- QAR1(A),XB(c)
- Vars
- S(h);OGATE,XB(H)::R1(G),XS(h)
- Q(g);N_GUARD::B(I),XQ(g)
- Refutation
- Q(g);
- Try
- Actual
- S(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD,XB(H)::QAR(A)
- B(i);OGATE,XS(E)::B(I),XB(i)
- Q(g);N_GUARD::B(I),XQ(g)
- Q(g);N_GUARD::B(I)
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