MESON Chess Problem Database
Problem Display
PID: 215650 (1q2r3/1p3N2/2N2p1R/4Pk2/1Q1P2n1/1B3P2/3B2P1/b5K1 w - - 0 1)
Parshin, Lev D
Troianovski, Vladimir
Sachova skladba, 1989
#2
11 + 7
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.Sxd6#
- 1...Qa7
- 2.Sd6#
- 1...Qa8
- 2.Sd6#
- 1...Qc8
- 2.Sd6#
- 1...Re6
- 2.Bc2#
- 1...Re7
- 2.Sxe7#
- 1...Rc8
- 2.Se7#
- 1...Rd8
- 2.Se7#
- 1...Rf8
- 2.Se7#
- 1...Rg8
- 2.Se7#
- 1...Rh8
- 2.Se7#
- 1...Bxd4+
- 2.Sxd4#
- 1...Sf2
- 2.Rxf6#
- 1...Sh2
- 2.Rxf6#
- 1...Se3
- 2.Rxf6#
- 1...Qd6
- Tries
- 1.Be6+?
- 1...Rxe6
- 2.Qb1#
- 1...Kxe6!
- 1...Rxe6
- 1.Qc5?
- threat
- 2.Qc2#
- 1...Bxd4+
- 2.Sxd4#
- 1...Qxe5
- 2.Sd6#
- 1...Rxe5
- 2.Se7#
- 1...Sxe5
- 2.g4#
- 1...fxe5
- 2.Bc2#
- 1...Se3
- 2.Rxf6#
- 1...Sf2
- 2.Rxf6#
- 1...Bc3!
- threat
- 1.Qd6?
- threat
- 2.Bc2#
- 1...Bxd4+
- 2.Sxd4#
- 1...Qxd6
- 2.Sxd6#
- 1...Sxe5
- 2.Rxf6#
- 2.Qxf6#
- 1...fxe5
- 2.Rh5#
- 2.Qg6#
- 1...Se3
- 2.Rxf6#
- 2.Qxf6#
- 1...Sf2
- 2.Rxf6#
- 2.Qxf6#
- 1...Rxe5!
- threat
- 1.Qe7?
- threat
- 2.Bc2#
- 2.Be6#
- 1...Bxd4+
- 2.Sxd4#
- 1...Rxe7
- 2.Sxe7#
- 1...Sxe5
- 2.Be6#
- 2.Rxf6#
- 2.Qxf6#
- 1...Sxh6
- 2.Bc2#
- 2.Qxf6#
- 1...fxe5
- 2.Be6#
- 2.Qg5#
- 1...Se3
- 2.Rxf6#
- 2.Qxf6#
- 1...Qd6
- 2.Sxd6#
- 2.Bc2#
- 1...Qc8
- 2.Sd6#
- 2.Bc2#
- 1...Sf2
- 2.Be6#
- 2.Rxf6#
- 2.Qxf6#
- 1...Qxe5!
- threat
- 1.d5?
- threat
- 2.Bc2#
- 2.Qe4#
- 2.Qf4#
- 2.Qxg4#
- 2.fxg4#
- 1...Bd4+
- 2.Sxd4#
- 1...Qxe5
- 2.Qxg4#
- 2.fxg4#
- 1...Rxe5
- 2.Qf4#
- 2.Qxg4#
- 2.fxg4#
- 1...Bxe5
- 2.Bc2#
- 2.Qe4#
- 2.Qxg4#
- 2.fxg4#
- 1...Sxe5
- 2.Qe4#
- 2.Qf4#
- 1...Sxh6
- 2.Bc2#
- 2.Qe4#
- 1...fxe5
- 2.Qe4#
- 2.Qxg4#
- 2.fxg4#
- 1...Rg8
- 2.Se7#
- 2.Bc2#
- 2.Qe4#
- 2.Qf4#
- 1...Sf2
- 2.Rxf6#
- 2.Qf4#
- 1...Sh2
- 2.Bc2#
- 2.Rxf6#
- 2.Qe4#
- 2.Qf4#
- 1...Se3
- 2.Rxf6#
- 2.Qe4#
- 1...Qa7+!
- threat
- 1.Be6+?
- Keys
- 1.Qb5!
- threat
- 2.Qd3#
- 1...Bxd4+
- 2.Sxd4#
- 1...Qxe5
- 2.Sd6#
- 1...Rxe5
- 2.Se7#
- 1...Sxe5
- 2.g4#
- 1...fxe5
- 2.Bc2#
- 1...Se3
- 2.Rxf6#
- 1...Sf2
- 2.Rxf6#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(f);N_GUARD::S(K),XQ(f)
- Q(f);N_GUARD,P_PINP(G)::S(K)
- Q(f);N_GUARD::S(K)
- R(g);SBLOCK::B(D)
- R(g);N_GUARD::S(I),XR(g)
- R(g);N_GUARD::S(I)
- B(a);CHECK,XP(G)::S(I),XB(a)
- S(b);N_GUARD::R1(J),XP(d)
- Tries
- Try
- B(D);CHECK
- Vars
- R(g);SBLOCK,XB(D)::QAB(F)
- Refutation
- K(c);P_SPINP(d),S_FLIGHT,XB(D)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- B(a);CHECK,XP(G)::S(I),XB(a)
- Q(f);N_GUARD,P_SPINQ(f),XP(H)::S(K)
- R(g);N_GUARD,P_SPINR(g),XP(H)::S(I)
- S(b);OGATE,P_SPINS(b),XP(H)::P(C)
- P(d);P_SPINP(d),XP(H)::B(D)
- S(b);N_GUARD::R1(J),XP(d)
- Refutation
- B(a);
- Try
- Q(F);
- Threat
- B(D)
- Vars
- B(a);CHECK,XP(G)::S(I),XB(a)
- Q(f);XQ(F)::S(K),XQ(f)
- Refutation
- R(g);XP(H)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XP(G)::S(I),XB(a)
- R(g);XQ(F)::S(I),XR(g)
- Refutation
- Q(f);XP(H)
- Try
- P(G);
- Threat
- DUALS(5)
- Vars
- B(a);CHECK,N_GUARD::S(I),XB(a)
- Refutation
- Q(f);CHECK
- Try
- Actual
- Q(F);
- Threat
- QAB(F)
- Vars
- B(a);CHECK,XP(G)::S(I),XB(a)
- Q(f);N_GUARD,P_SPINQ(f),XP(H)::S(K)
- R(g);N_GUARD,P_SPINR(g),XP(H)::S(I)
- S(b);OGATE,P_SPINS(b),XP(H)::P(C)
- P(d);P_SPINP(d),XP(H)::B(D)
- S(b);N_GUARD::R1(J),XP(d)
Developed and maintained by Brian Stephenson.
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