MESON Chess Problem Database
Problem Display
PID: 138061 (2B1R3/2b5/1qN3R1/pp1k4/1P1pN3/KP4r1/7B/3Q4 w - - 0 1)
Zagoruyko, Leonid Ivanovich
3rd HM., Kubbel MT, 1945-1946
#2
10 + 7
| 14752 | Soviet Chess Compositions (1945-1947) | 1949 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Qxd4#
- 1...Qb7
- 2.Qxd4#
- 1...Qb8
- 2.Qxd4#
- 1...Rg1
- 2.Sc3#
- 1...Rg2
- 2.Sc3#
- 1...Rxb3+
- 2.Qxb3#
- 1...Rc3
- 2.Sxc3#
- 1...Rg4
- 2.Sc3#
- 1...Rg5
- 2.Sc3#
- 1...Be5
- 2.Rxe5#
- 1...Bd6
- 2.Rxd6#
- 1...Bd8
- 2.Rd6#
- 2.Re5#
- 1...d3
- 2.Sc3#
- 1...axb4+
- 2.Sxb4#
- 1...Qa6
- Tries
- 1.Sf6+?
- 1...Kd6
- 2.Re6#
- 1...Kxc6!
- 1...Kd6
- 1.Rge6?
- threat
- 2.Sf6#
- 2.Se7#
- 1...Rxb3+
- 2.Qxb3#
- 1...axb4+
- 2.Sxb4#
- 1...Qxc6
- 2.Sf6#
- 1...Bd6
- 2.Rxd6#
- 1...Qc5
- 2.Sf6#
- 1...Rf3
- 2.Se7#
- 1...Rg6
- 2.Sc3#
- 2.Se7#
- 1...Rg7
- 2.Sc3#
- 2.Sf6#
- 1...Bd8
- 2.Rd6#
- 1...d3
- 2.Sc3#
- 2.Sf6#
- 1...Be5!
- threat
- 1.Ree6?
- threat
- 2.Sf6#
- 2.Se7#
- 1...Rxb3+
- 2.Qxb3#
- 1...axb4+
- 2.Sxb4#
- 1...Qxc6
- 2.Sf6#
- 1...Rxg6
- 2.Sc3#
- 2.Se7#
- 1...Be5
- 2.Rxe5#
- 1...Qc5
- 2.Sf6#
- 1...Rf3
- 2.Se7#
- 1...Bd8
- 2.Re5#
- 1...d3
- 2.Sc3#
- 2.Sf6#
- 1...Bd6!
- threat
- 1.Qf3?
- threat
- 2.Sc3#
- 2.Sxg3#
- 2.Qf7#
- 1...axb4+
- 2.Sxb4#
- 1...Qxc6
- 2.Sc3#
- 2.Sxg3#
- 1...Rxg6
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Se7#
- 1...Bd6
- 2.Sc3#
- 2.Sxg3#
- 2.Sf6#
- 2.Rxd6#
- 1...Rg1
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Se7#
- 2.Qf7#
- 1...Rg2
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Se7#
- 2.Qf7#
- 1...Rh3
- 2.Sc3#
- 2.Sg3#
- 2.Sf6#
- 2.Se7#
- 2.Qf7#
- 1...Rg4
- 2.Sc3#
- 2.Sf6#
- 2.Se7#
- 2.Qf7#
- 1...Rg5
- 2.Sd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sxg5#
- 2.Sd6#
- 2.Sf6#
- 2.Se7#
- 2.Qf7#
- 1...Bf4
- 2.Sc3#
- 2.Sxg3#
- 1...Be5
- 2.Sc3#
- 2.Sxg3#
- 2.Se7#
- 2.Rxe5#
- 1...Rxf3!
- threat
- 1.Qh5+?
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rg5!
- 1...Be5
- 1.Sf6+?
- Keys
- 1.Qc2!
- threat
- 2.Be6#
- 1...Rxb3+
- 2.Qxb3#
- 1...axb4+
- 2.Sxb4#
- 1...Qxc6
- 2.Qxc6#
- 1...Rxg6
- 2.Se7#
- 1...Qc5
- 2.Qxc5#
- 1...Rc3
- 2.Se7#
- 1...Rd3
- 2.Sf6#
- 1...d3
- 2.Sc3#
- threat
- 1.Qc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::QAR1(A),XP(b)
- R(a);N_GUARD,N_PINP(D)::S(F)
- R(a);CHECK,OGATE,XP(D)::QAB(A),XR(a)
- R(a);N_GUARD::S(F),XR(a)
- B(g);N_GUARD::R1(J),XB(g)
- B(g);N_GUARD::R1(H),XB(g)
- P(b);N_PINP(D),S_CUTR(a)::S(F)
- P(c);CHECK,XP(E)::S(G),XP(c)
- Tries
- Try
- S(F);CHECK
- Vars
- K(e);P-FLIGHT,P_SPINR(a)::R1(J)
- Refutation
- K(e);N_SPINP(b),S_FLIGHT,XS(G)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE,XP(D)::QAB(A),XR(a)
- P(c);CHECK,XP(E)::S(G),XP(c)
- Q(f);XS(G)::S(F)
- B(g);N_GUARD::R1(H),XB(g)
- Q(f);::S(F)
- R(a);::S(G)
- B(g);N_GUARD::R1(H)
- Refutation
- B(g);
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE,XP(D)::QAB(A),XR(a)
- P(c);CHECK,XP(E)::S(G),XP(c)
- Q(f);XS(G)::S(F)
- B(g);N_GUARD::R1(J),XB(g)
- Q(f);::S(F)
- R(a);::S(G)
- B(g);N_GUARD::R1(J)
- Refutation
- B(g);
- Try
- Q(A);N_PINP(b),N_SPINP(D)
- Threat
- DUALS(3)
- Vars
- P(c);CHECK,XP(E)::S(G),XP(c)
- Refutation
- R(a);P_PINP(D),XQ(A)
- Try
- Q(A);CHECK,N_PINP(b)
- Refutation
- R(a);N_PINP(D),P_SPINR(a)
- Try
- Actual
- Q(A);N_PINP(b)
- Threat
- B(I)
- Vars
- R(a);CHECK,OGATE,XP(D)::QAB(A),XR(a)
- P(c);CHECK,XP(E)::S(G),XP(c)
- Q(f);OGATE,XS(G)::QAB1(A),XQ(f)
- R(a);N_PINP(D),XR(H)::S(G)
- Q(f);N_GUARD::QAR1(A),XQ(f)
- R(a);::S(G)
- R(a);::S(F)
- P(b);N_GUARD,N_PINP(D),S_CUTR(a)::S(F)
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