MESON Chess Problem Database
Problem Display
PID: 28891 (8/B1pqp3/1rn5/N2R3Q/1p1Nk2P/3Rp1P1/8/1K3Bn1 w - - 0 1)
Dombrovskis, Alfreds A
Sushkov, Yuri Akimovich
Sp. Prize, Source?, 1978
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf5
- 2.Qxf5#
- 1...Qe8
- 2.Qf5#
- 1...Qd6
- 2.Qf5#
- 1...Qd8
- 2.Qf5#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Sxd4
- 2.R3xd4#
- 2.Re5#
- 1...Sxa5
- 2.Re5#
- 2.Qe5#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Sxa7
- 2.Re5#
- 2.Qe5#
- 1...Sb8
- 2.Re5#
- 2.Qe5#
- 1...Sd8
- 2.Re5#
- 2.Qe5#
- 1...Qf5
- Tries
- 1.Sc2?
- threat
- 2.Rxe3#
- 1...Qf5
- 2.Qxf5#
- 1...Se5
- 2.R3d4#
- 2.Rxe5#
- 1...e2
- 2.Re3#
- 1...e5!
- threat
- 1.Sf5?
- threat
- 2.Qg4#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxd5
- 2.Rxe3#
- 1...Sd4
- 2.R3xd4#
- 1...Se2
- 2.Bg2#
- 1...Sh3
- 2.Bg2#
- 1...Se5
- 2.R3d4#
- 1...Qd6!
- threat
- 1.Sdxc6?
- threat
- 2.R3d4#
- 2.Re5#
- 1...Qxd5
- 2.Qg4#
- 2.Qxd5#
- 1...Qg4
- 2.Qxg4#
- 1...Qf5
- 2.R3d4#
- 2.R5d4#
- 2.Qxf5#
- 1...Qe6
- 2.R3d4#
- 2.R5d4#
- 1...Qd6
- 2.R3d4#
- 2.Qf5#
- 1...Rb5
- 2.Rxe3#
- 2.R3d4#
- 1...Se2
- 2.Bg2#
- 1...e2
- 2.Qe5#
- 1...e5
- 2.Rxe5#
- 1...Sf3!
- threat
- 1.Se6?
- threat
- 2.Sc5#
- 2.Sg5#
- 2.Qg4#
- 2.Qf5#
- 1...Qxd5
- 2.Qxd5#
- 1...Qd6
- 2.Sg5#
- 2.Qf5#
- 1...Rb5
- 2.Sg5#
- 2.Rxe3#
- 2.Qg4#
- 2.Qf5#
- 1...Se2
- 2.Sc5#
- 2.Sg5#
- 2.Bg2#
- 2.Qf5#
- 1...Sf3
- 2.Sc5#
- 2.Qg4#
- 2.Qg6#
- 2.Qf5#
- 2.Qh7#
- 1...Sh3
- 2.Sc5#
- 2.Bg2#
- 2.Qf5#
- 1...Sd4
- 2.Sc5#
- 2.R3xd4#
- 2.Re5#
- 1...Se5
- 2.Sc5#
- 2.R3d4#
- 2.Rxe5#
- 1...Qxe6!
- threat
- 1.Sc4?
- threat
- 2.Rxe3#
- 1...Qxd5
- 2.Qg4#
- 1...Qf5
- 2.Qxf5#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...e2
- 2.Re3#
- 1...e5!
- threat
- 1.Qg6+?
- 1...Qf5
- 2.Qxf5#
- 1...Kxd5!
- 1...Qf5
- 1.Qg5?
- threat
- 2.Rxe3#
- 1...Qxd5
- 2.Qxe3#
- 2.Qf4#
- 1...Qf5
- 2.Qxf5#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...e2
- 2.Re3#
- 1...e5!
- threat
- 1.Qh7+?
- 1...Qf5
- 2.Qxf5#
- 1...Kxd5!
- 1...Qf5
- 1.Sc2?
- Keys
- 1.Sdb3!
- threat
- 2.Sc5#
- 1...Qxd5
- 2.Qxd5#
- 1...Qg4
- 2.Qxg4#
- 1...Qd6
- 2.Qf5#
- 1...Rb5
- 2.Rxe3#
- threat
- 1.Sdb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- Q(h);N_GUARD::QAB1(I),XQ(h)
- Q(h);N_GUARD::QAB1(I)
- S(a);N_GUARD::QAB1(I),XS(a)
- S(a);N_GUARD::QAB1(I)
- Tries
- Try
- S(E);
- Threat
- R1(C),XP(b)
- Vars
- Q(h);N_GUARD::QAB1(I),XQ(h)
- P(b);::R1(C)
- Refutation
- P(i);
- Try
- S(E);
- Threat
- QAR2(I)
- Vars
- Q(h);OGATE,XS(E)::QAB1(I),XQ(h)
- Q(h);SBLOCK,XR(H)::R1(C),XP(b)
- S(f);N_GUARD::R1(C),XS(f)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::R1(C)
- Refutation
- Q(h);
- Try
- S(E);XS(f)
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD::QAR2(I),XQ(h)
- S(a);N_GUARD::B(B)
- P(b);::QAR1(I)
- P(i);::R1(H),XP(i)
- Refutation
- S(a);
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(h);OGATE,XR(H)::QAB1(I),XQ(h)
- Refutation
- Q(h);XS(E)
- Try
- S(G);
- Threat
- R1(C),XP(b)
- Vars
- Q(h);N_GUARD,SBLOCK,XR(H)::QAR2(I)
- Q(h);N_GUARD::QAB1(I),XQ(h)
- P(b);::R1(C)
- Refutation
- P(i);
- Try
- Q(I);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h)::QAB1(I),XQ(h)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Q(I);
- Threat
- R1(C),XP(b)
- Vars
- Q(h);N_GUARD::QAB1(I),XQ(h)
- P(b);::R1(C)
- Refutation
- P(i);
- Try
- Q(I);CHECK
- Vars
- Q(h);N_GUARD,P_SPINQ(h)::QAB1(I),XQ(h)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- Q(h);OGATE,XR(H)::QAB1(I),XQ(h)
- Q(h);N_GUARD::QAR2(I),XQ(h)
- Q(h);N_GUARD::QAB1(I)
- R(e);::R1(C),XP(b)
Developed and maintained by Brian Stephenson.
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