MESON Chess Problem Database
Problem Display
PID: 15825 (b5NB/3rN2B/3p2P1/R7/3Pk1K1/2p1p3/2Pqn3/r2Q4 w - - 0 1)
Leun, Evgeny
Lobusov, Andrey Jakovlevic
4th Prize, Hartong MT, 1988
#2
10 + 9
| 3297 | FIDE Album (1986-1988) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sf6#
- 2.Qd3#
- 2.g7#
- 1...Qe1
- 2.Sf6#
- 2.Qd3#
- 2.g7#
- 1...Qxc2
- 2.Sf6#
- 2.Qxc2#
- 2.g7#
- 1...Qd3
- 2.Qxd3#
- 2.cxd3#
- 1...Qxd4
- 2.g7#
- 1...Ra2
- 2.Qh1#
- 1...Ra3
- 2.Qh1#
- 1...Ra4
- 2.Qh1#
- 1...Rxa5
- 2.Qh1#
- 1...Sc1
- 2.Qf3#
- 1...Sg3
- 2.Qf3#
- 1...Sxd4
- 2.Sf6#
- 1...Sf4
- 2.Qf3#
- 1...Qc1
- Tries
- 1.Sf5?
- threat
- 2.Sf6#
- 1...Rf7
- 2.Sxd6#
- 1...Qxd4!
- threat
- 1.Sc6?
- threat
- 2.Sf6#
- 2.g7#
- 1...Qxd4
- 2.g7#
- 1...Rxa5
- 2.Sf6#
- 2.Qh1#
- 1...Rxh7
- 2.Sf6#
- 1...Sxd4
- 2.Sf6#
- 1...Rf7
- 2.gxf7#
- 1...Rg7
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 2.Qf3#
- 1...Sf4
- 2.Sf6#
- 2.Qf3#
- 1...Bxc6!
- threat
- 1.Be5?
- threat
- 2.Sf6#
- 2.g7#
- 1...Sxd4
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 2.Qf3#
- 1...Sf4
- 2.Sf6#
- 2.Qf3#
- 1...dxe5!
- threat
- 1.Bf6?
- threat
- 2.g7#
- 1...Rxa5
- 2.Qh1#
- 1...Sg3
- 2.Qf3#
- 1...Sf4
- 2.Qf3#
- 1...Sxd4!
- threat
- 1.Rd5?
- threat
- 2.Sf6#
- 2.g7#
- 1...Qxd4
- 2.g7#
- 1...Rxe7
- 2.Sf6#
- 1...Sxd4
- 2.Sf6#
- 1...Sg3
- 2.Sf6#
- 2.Qf3#
- 1...Sf4
- 2.Sf6#
- 2.Qf3#
- 1...Bxd5!
- threat
- 1.Qf1?
- threat
- 2.Qg2#
- 2.Qf3#
- 2.Qf5#
- 1...Qxc2
- 2.Qf5#
- 1...Rxa5
- 2.Qg2#
- 2.Qh1#
- 2.Qf3#
- 1...Sxd4
- 2.Sf6#
- 2.Qf4#
- 1...Sc1
- 2.Qf3#
- 2.Qf4#
- 2.Qf5#
- 1...Sg1
- 2.Qf4#
- 2.Qf5#
- 1...Sg3
- 2.Qf3#
- 2.Qf4#
- 1...Sf4
- 2.Qf3#
- 2.Qxf4#
- 1...Rxf1!
- threat
- 1.Sf5?
- Keys
- 1.Ra4!
- threat
- 2.Sf6#
- 2.g7#
- 1...Qxd4
- 2.Qd3#
- 1...Rxa4
- 2.Qh1#
- 1...Rxe7
- 2.Sf6#
- 1...Sxd4
- 2.Qf3#
- 1...Sg3
- 2.Sf6#
- 2.Qf3#
- 1...Sf4
- 2.Sf6#
- 2.Qf3#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(b);XP(C)::B(H)+P(F)
- R(a);N_GUARD::QAB(A)
- R(a);N_GUARD,XR(E)::QAB(A)
- S(c);OGATE::QAB1(A)
- S(c);SBLOCK,XP(C)::S(I)
- Tries
- Try
- S(G);
- Threat
- S(I)
- Vars
- R(h);N_GUARD::S(G),XP(g)
- Refutation
- Q(b);XP(C)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(C)::B(H)+P(F)
- R(h);XB(H)::S(I)
- S(c);XP(C)::S(I)
- R(h);OGATE::B(H)+P(F),XR(h)
- R(h);P_PINP(F)::S(I)
- Refutation
- B(i);XS(G)
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- S(c);XP(C)::S(I)
- Refutation
- P(g);XB(J)
- Try
- B(J);
- Threat
- B(H)+P(F)
- Vars
- R(a);N_GUARD,XR(E)::QAB(A)
- S(c);OGATE::QAB1(A)
- Refutation
- S(c);XP(C)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(C)::B(H)+P(F)
- R(h);XS(G)::S(I)
- S(c);XP(C)::S(I)
- Refutation
- B(i);XR(E)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(B)::QAB1(A)
- Refutation
- R(a);XQ(A)
- Try
- Actual
- R(E);
- Threat
- DUALS(2)
- Vars
- Q(b);OGATE,P_SPINQ(b),XP(C)::QAB1(A)
- R(a);N_GUARD,XR(E)::QAB(A)
- R(h);XS(G)::S(I)
- S(c);OGATE,P_SPINS(c),XP(C)::QAB1(A)
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