MESON Chess Problem Database
Problem Display
PID: 225637 (3r1b2/2p1N3/R5q1/1Rn3P1/2pkP1Q1/2Np4/1P1p1P1B/3K4 w - - 0 1)
Mochalkin, Oleksandr Viktorovich
2nd HM., Praca, 1996
#2
11 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Sf5#
- 2.Sc6#
- 1...Qf5
- 2.Sxf5#
- 2.Sc6#
- 1...Qh5
- 2.Sf5#
- 2.Sc6#
- 1...Qf7
- 2.Sc6#
- 1...Qh7
- 2.Sc6#
- 1...Qe8
- 2.Sf5#
- 1...Qxg5
- 2.Sc6#
- 1...Qxa6
- 2.Sf5#
- 1...Qb6
- 2.Sf5#
- 1...Qc6
- 2.Sf5#
- 2.Sxc6#
- 1...Qd6
- 2.Sf5#
- 1...Qh6
- 2.Sf5#
- 1...Qg7
- 2.Sf5#
- 2.Sc6#
- 1...Qg8
- 2.Sf5#
- 2.Sc6#
- 1...Sb3
- 2.Be5#
- 1...Sa4
- 2.Be5#
- 1...Sxe4
- 2.Be5#
- 1...Sxa6
- 2.Be5#
- 1...Se6
- 2.Sc6#
- 2.Be5#
- 1...Sb7
- 2.Be5#
- 1...Sd7
- 2.Rd5#
- 1...Qxe4
- Tries
- 1.Rd6+?
- 1...Qxd6
- 2.Sf5#
- 1...cxd6
- 2.Sc6#
- 1...Rxd6!
- 1...Qxd6
- 1.Re6?
- threat
- 2.Sc6#
- 2.Be5#
- 1...Qxg5
- 2.Sc6#
- 1...Bxe7
- 2.Be5#
- 1...Qf5
- 2.Sxf5#
- 2.Sc6#
- 1...Qe8
- 2.Sf5#
- 2.Be5#
- 1...Qf6
- 2.Sc6#
- 1...Qg7
- 2.Sf5#
- 2.Sc6#
- 1...Rd5
- 2.Sc6#
- 1...Rd6
- 2.Be5#
- 1...Bg7
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 2.Rd5#
- 1...c6
- 2.Sxc6#
- 2.Be5#
- 1...Qxe6!
- threat
- 1.Rxg6?
- threat
- 2.Sf5#
- 2.Sc6#
- 1...Rd5
- 2.Sc6#
- 1...Rd6
- 2.Sf5#
- 1...c6
- 2.Sf5#
- 2.Sxc6#
- 1...Bxe7!
- threat
- 1.Qf3?
- threat
- 2.Qe3#
- 1...Qxg5
- 2.Sc6#
- 1...Qh5
- 2.Sf5#
- 2.Sc6#
- 1...Qxe4!
- threat
- 1.Qd7+?
- 1...Qd6
- 2.Sf5#
- 2.Sc6#
- 1...Sxd7
- 2.Rd5#
- 1...Rxd7!
- 1...Qd6
- 1.Qg1?
- threat
- 2.f3#
- 2.f4#
- 1...Qh5+
- 2.f3#
- 1...Qxg5
- 2.Sc6#
- 1...Sxe4
- 2.Be5#
- 1...Qxe4!
- threat
- 1.Qf4?
- threat
- 2.Qe3#
- 2.Qe5#
- 1...Qxe4
- 2.Sf5#
- 2.Sc6#
- 1...Qxg5
- 2.Sc6#
- 1...Qe6
- 2.Qe3#
- 1...Qf5
- 2.Sxf5#
- 2.Sc6#
- 2.Qe3#
- 1...Qd6
- 2.Sf5#
- 2.Qe3#
- 1...Qf6
- 2.Qe3#
- 2.Qxf6#
- 1...Qg7
- 2.Sf5#
- 2.Sc6#
- 2.Qe3#
- 1...Rd5
- 2.Qe3#
- 1...Bg7
- 2.Qe3#
- 1...Sd7
- 2.Rd5#
- 2.Qe3#
- 1...Qh5+!
- threat
- 1.f3?
- threat
- 2.Qg1#
- 1...Ke3
- 2.Bg1#
- 1...Qxe4
- 2.Sf5#
- 1...Sxe4
- 2.Bg1#
- 1...Qxg5!
- threat
- 1.e5+?
- 1...Qe4
- 2.Sf5#
- 2.Sc6#
- 1...Se4!
- 1...Qe4
- 1.Rd6+?
- Keys
- 1.Bg1!
- threat
- 2.f4#
- 1...Ke5
- 2.f4#
- 1...Qxe4
- 2.Sc6#
- 1...Sxe4
- 2.f3#
- threat
- 1.Bg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(f);N_GUARD::S(K)
- Q(f);N_GUARD,XP(I)::S(K)
- Q(f);N_GUARD,XR(J)::S(K)
- S(e);::B(D)
- S(e);P_SPINS(e),XP(F)::B(D)
- S(e);XR(J)::B(D)
- S(e);OGATE::R1(H)
- Tries
- Try
- R(J);CHECK
- Vars
- Q(f);XR(J)::S(K)
- P(g);XR(J)::S(K)
- Refutation
- R(h);XR(J)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- Q(f);XP(I)::S(K)
- B(i);XS(K)::B(D)
- Q(f);::S(K)
- R(h);::S(K)
- R(h);::B(D)
- B(i);::S(K)
- Refutation
- Q(f);XR(J)
- Try
- R(J);XQ(f)
- Threat
- DUALS(2)
- Vars
- R(h);::S(K)
- Refutation
- B(i);XS(K)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- Q(f);N_GUARD,XP(I)::S(K)
- Refutation
- Q(f);XP(F)
- Try
- Q(G);CHECK
- Vars
- S(e);OGATE,XQ(G)::R1(H)
- Refutation
- R(h);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK::QAB(G)+P(C)
- Q(f);N_GUARD,XP(I)::S(K)
- S(e);XP(F)::B(D)
- Refutation
- Q(f);XP(F)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XP(I)::S(K)
- Q(f);::QAB1(G)
- R(h);::QAB1(G)
- B(i);::QAB1(G)
- Refutation
- Q(f);CHECK
- Try
- P(C);
- Threat
- QAB(G)
- Vars
- K(d);S_FLIGHT::B(D)
- Q(f);N_GUARD,P_SPINQ(f),XP(F)::S(K)
- S(e);P_SPINS(e),XP(F)::B(D)
- Refutation
- Q(f);XP(I)
- Try
- P(F);CHECK
- Refutation
- S(e);P_SPINS(e)
- Try
- Actual
- B(D);
- Threat
- B(D)+P(C)
- Vars
- K(d);P_SPINS(e),S_FLIGHT::P(C)
- Q(f);N_GUARD,P_SPINQ(f),XP(F)::S(K)
- S(e);P_SPINS(e),XP(F)::B(D)+P(C)
Developed and maintained by Brian Stephenson.
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