MESON Chess Problem Database
Problem Display
PID: 58796 (3Q4/8/8/8/2N1r3/2bB1R2/5NR1/1KB1k2q w - - 0 1)
Lobusov, Andrey Jakovlevic
Sp. Prize, Shakhmaty v SSSR, 1976
#2
8 + 4
| 3310 | 2345 Chess Problems | 1997 |
| 133 | The Problemist Supplement | 2010 |
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Rxg1#
- 1...Qh4
- 2.Rg1#
- 1...Qh5
- 2.Rg1#
- 1...Qh6
- 2.Rg1#
- 1...Qh7
- 2.Rg1#
- 1...Qh8
- 2.Rg1#
- 1...Re3
- 2.Rxe3#
- 1...Rxc4
- 2.Re3#
- 1...Rd4
- 2.Re3#
- 1...Rf4
- 2.Re3#
- 1...Rg4
- 2.Re3#
- 1...Rh4
- 2.Re3#
- 1...Ba1
- 2.Bd2#
- 1...Bb2
- 2.Bd2#
- 1...Bd2
- 2.Bxd2#
- 1...Bd4
- 2.Bd2#
- 1...Ba5
- 2.Qxa5#
- 1...Be5
- 2.Bd2#
- 1...Bf6
- 2.Bd2#
- 1...Bg7
- 2.Bd2#
- 1...Bh8
- 2.Bd2#
- 1...Qg1
- Tries
- 1.Sxh1?
- threat
- 2.Rg1#
- 2.Rf1#
- 1...Re2
- 2.Rg1#
- 1...Rf4
- 2.Rg1#
- 1...Rg4
- 2.Rf1#
- 1...Bd4
- 2.Rf1#
- 1...Kd1!
- threat
- 1.Se3?
- threat
- 2.Sc2#
- 1...Rxe3
- 2.Rxe3#
- 1...Rb4+!
- threat
- 1.Qh4?
- threat
- 2.Qxh1#
- 2.Qxe4#
- 1...Qxg2
- 2.Qxe4#
- 1...Qxh4
- 2.Rg1#
- 1...Rxc4
- 2.Re3#
- 2.Qxh1#
- 1...Rxh4
- 2.Re3#
- 1...Re2
- 2.Qxh1#
- 1...Rd4
- 2.Re3#
- 2.Qxh1#
- 1...Qg1
- 2.Rxg1#
- 2.Qxe4#
- 1...Qh2
- 2.Qxe4#
- 1...Qh3
- 2.Qxe4#
- 1...Re3
- 2.Rxe3#
- 2.Qxh1#
- 1...Rf4
- 2.Re3#
- 2.Qxh1#
- 1...Rg4
- 2.Re3#
- 2.Qxh1#
- 1...Re5
- 2.Qxh1#
- 1...Re6
- 2.Qxh1#
- 1...Re7
- 2.Qxh1#
- 1...Re8
- 2.Qxh1#
- 1...Bd2
- 2.Bxd2#
- 2.Qxh1#
- 1...Bd4
- 2.Bd2#
- 2.Qxh1#
- 1...Qf1!
- threat
- 1.Qd4?
- threat
- 2.Qxc3#
- 2.Qxe4#
- 1...Rxd4
- 2.Re3#
- 1...Bxd4
- 2.Bd2#
- 1...Qf1
- 2.Qxc3#
- 1...Qh4
- 2.Rg1#
- 2.Qxc3#
- 1...Qh6
- 2.Rg1#
- 1...Qh7
- 2.Rg1#
- 2.Qxc3#
- 1...Qh8
- 2.Rg1#
- 2.Qxe4#
- 1...Re3
- 2.Rxe3#
- 2.Qxc3#
- 2.Qxe3#
- 1...Rf4
- 2.Re3#
- 2.Qxc3#
- 2.Qe3#
- 1...Rg4
- 2.Re3#
- 2.Qxc3#
- 2.Qe3#
- 1...Rh4
- 2.Re3#
- 2.Qxc3#
- 2.Qe3#
- 1...Re5
- 2.Qxc3#
- 1...Re6
- 2.Qxc3#
- 1...Re7
- 2.Qxc3#
- 1...Re8
- 2.Qxc3#
- 1...Ba1
- 2.Bd2#
- 2.Qxe4#
- 1...Bb2
- 2.Bd2#
- 2.Qxe4#
- 1...Bd2
- 2.Bxd2#
- 1...Bb4
- 2.Qxe4#
- 1...Ba5
- 2.Qxe4#
- 1...Re2!
- threat
- 1.Sxh1?
- Keys
- 1.Qh8!
- threat
- 2.Qxc3#
- 2.Qxh1#
- 1...Qxg2
- 2.Qxc3#
- 1...Qxh8
- 2.Rg1#
- 1...Rxc4
- 2.Re3#
- 2.Qxh1#
- 1...Bxh8
- 2.Bd2#
- 1...Re2
- 2.Qxh1#
- 1...Qf1
- 2.Qxc3#
- 1...Qg1
- 2.Rxg1#
- 2.Qxc3#
- 1...Qh2
- 2.Qxc3#
- 1...Qh3
- 2.Qxc3#
- 1...Qh4
- 2.Rg1#
- 2.Qxc3#
- 1...Qh5
- 2.Rg1#
- 2.Qxc3#
- 1...Qh6
- 2.Rg1#
- 1...Qh7
- 2.Rg1#
- 2.Qxc3#
- 1...Rd4
- 2.Re3#
- 2.Qxh1#
- 1...Rh4
- 2.Re3#
- 2.Qxc3#
- 1...Re5
- 2.Qxh1#
- 1...Ba1
- 2.Bd2#
- 2.Qxh1#
- 1...Bb2
- 2.Bd2#
- 2.Qxh1#
- 1...Bd2
- 2.Bxd2#
- 2.Qxh1#
- 1...Bb4
- 2.Qxh1#
- 1...Bd4
- 2.Bd2#
- 2.Qxh1#
- 1...Ba5
- 2.Qxh1#
- 1...Be5
- 2.Bd2#
- 2.Qxh1#
- 1...Bf6
- 2.Bd2#
- 2.Qxh1#
- 1...Bg7
- 2.Bd2#
- 2.Qxh1#
- threat
- 1.Qh8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 17
- Sets
- Q(b);N_GUARD::R(D),XQ(b)
- Q(b);N_GUARD::R(D)
- R(d);N_GUARD::R(F),XR(d)
- R(d);N_GUARD,XS(G)::R(F)
- R(d);N_GUARD::R(F)
- B(c);N_GUARD::B(B)
- B(c);N_GUARD::B(B),XB(c)
- B(c);OGATEB::QAB(H),XB(c)
- Tries
- Try
- S(C);XQ(b)
- Threat
- DUALS(2)
- Vars
- R(d);::R(D)
- R(d);::R1(F)
- B(c);::R1(F)
- Refutation
- K(a);P-FLIGHT
- Try
- S(G);
- Threat
- S(G)
- Vars
- R(d);OGATE,XS(G)::R(F),XR(d)
- Refutation
- R(d);CHECK
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(b);XR(D)::QAR(H),XR(d)
- Q(b);N_GUARD,XQ(H)::R(D)
- R(d);N_GUARD,XQ(H)::R(F)
- R(d);::QAR(H),XQ(b)
- Q(b);::QAR(H),XR(d)
- Refutation
- Q(b);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XQ(H)::R(F)
- B(c);N_GUARD,XQ(H)::B(B)
- Q(b);::QAB(H),XB(c)
- Q(b);N_GUARD::R(D)
- R(d);::QAB(H),XB(c)
- B(c);N_GUARD::B(B),XB(c)
- B(c);::QAR(H),XR(d)
- Refutation
- R(d);
- Try
- Actual
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(b);XR(D)::QAB(H),XB(c)
- Q(b);N_GUARD,XQ(H)::R(D)
- B(c);N_GUARD,XQ(H)::B(B)
- R(d);::QAR(H),XQ(b)
- Q(b);::QAB(H),XB(c)
- Q(b);N_GUARD::R(D)
- B(c);::QAR(H),XQ(b)
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