MESON Chess Problem Database
Problem Display
PID: 251804 (2N4b/p1K3P1/2n1P3/1pNkPp2/rPRPR1p1/p7/P3BP2/1Q6 w - - 0 1)
Akchurin, Mikhail
Kopaev, Viacheslav Georgievich
Probleemblad, 1982
#2
14 + 9
SOLUTION
- SOUND
- Sets
- 1...Sxb4
- 2.Se7#
- 1...Sxd4
- 2.Se7#
- 2.Rcxd4#
- 1...Sa5
- 2.Se7#
- 1...Sxe5
- 2.Se7#
- 2.Rxe5#
- 1...Se7
- 2.Sxe7#
- 1...Sb8
- 2.Se7#
- 1...Sd8
- 2.Se7#
- 1...fxe4
- 2.Qxe4#
- 1...a5
- 2.Sb6#
- 1...a6
- 2.Sb6#
- 1...Sxb4
- Tries
- 1.Rc1?
- threat
- 2.Qb3#
- 1...Sxd4
- 2.Se7#
- 1...Sxe5
- 2.Se7#
- 1...fxe4
- 2.Qxe4#
- 1...Sa5
- 2.Se7#
- 1...Rxb4!
- threat
- 1.Rc3?
- threat
- 2.Qb3#
- 1...Sxd4
- 2.Se7#
- 1...Sxe5
- 2.Se7#
- 1...fxe4
- 2.Qxe4#
- 1...Sa5
- 2.Se7#
- 1...Rxb4!
- threat
- 1.Rxg4?
- threat
- 2.Qh1#
- 1...Sxe5
- 2.Se7#
- 1...f4
- 2.Qe4#
- 1...Sxd4!
- threat
- 1.Qh1?
- threat
- 2.Re3#
- 2.Rf4#
- 2.Rxg4#
- 1...Sxd4
- 2.Se7#
- 2.Rcxd4#
- 1...Sxe5
- 2.Se7#
- 2.Rxe5#
- 1...bxc4
- 2.Rf4#
- 2.Rxg4#
- 1...fxe4
- 2.Qxe4#
- 1...f4
- 2.Rxf4#
- 1...g3!
- threat
- 1.Qb3?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 1...Rxb4
- 2.Rxb4#
- 1...Sxd4
- 2.Se7#
- 2.Rcxd4#
- 1...Sxe5
- 2.Se7#
- 2.Rxe5#
- 1...bxc4
- 2.Bxc4#
- 2.Qxc4#
- 1...Sa5
- 2.Se7#
- 1...fxe4!
- threat
- 1.e7?
- threat
- 2.g8Q#
- 2.g8B#
- 1...Rxb4
- 2.g8Q#
- 2.g8B#
- 1...Sxb4
- 2.g8Q#
- 2.g8B#
- 1...Sxd4
- 2.Rcxd4#
- 1...Sxe5
- 2.Rxe5#
- 1...Sxe7
- 2.Sxe7#
- 1...bxc4
- 2.g8Q#
- 2.g8B#
- 1...fxe4
- 2.Qxe4#
- 2.g8Q#
- 2.g8B#
- 1...g3
- 2.g8Q#
- 2.g8B#
- 1...Ra5
- 2.g8Q#
- 2.g8B#
- 1...Ra6
- 2.g8Q#
- 2.g8B#
- 1...Sa5
- 2.g8Q#
- 2.g8B#
- 1...Sb8
- 2.g8Q#
- 2.g8B#
- 1...Sd8
- 2.exd8Q#
- 2.exd8R#
- 1...f4
- 2.g8Q#
- 2.g8B#
- 1...a5
- 2.Sb6#
- 2.g8Q#
- 2.g8B#
- 1...a6
- 2.Sb6#
- 2.g8Q#
- 2.g8B#
- 1...Bxg7!
- threat
- 1.g8Q?
- threat
- 2.e7#
- 1...Sxd4
- 2.Se7#
- 2.Rcxd4#
- 2.Qd8#
- 1...Sxe5
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 2.Qd8#
- 1...Sd8
- 2.Se7#
- 2.Qxd8#
- 1...Bxe5+!
- threat
- 1.g8B?
- threat
- 2.e7#
- 1...Sxd4
- 2.Se7#
- 2.Rcxd4#
- 1...Sxe5
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Bxe5+!
- threat
- 1.Rc1?
- Keys
- 1.Sd3!
- threat
- 2.Sf4#
- 1...Kxc4
- 2.Qb3#
- 1...Kxe4
- 2.Qh1#
- 1...Kxe6
- 2.g8Q#
- 2.g8B#
- 1...f4
- 2.Sxf4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- S(g);N_GUARD,XP(E)::S(N)
- S(g);N_GUARD::S(N)
- S(g);N_GUARD::S(N),XS(g)
- P(f);OGATE,XR(H)::QAB1(A),XP(f)
- P(h);N_GUARD::S(N)
- Tries
- Try
- R(F);
- Threat
- QAB(A)
- Vars
- S(g);N_GUARD,XP(G)::S(N)
- S(g);N_GUARD,XP(J)::S(N)
- P(f);OGATE,XR(H)::QAB1(A),XP(f)
- S(g);N_GUARD::S(N)
- Refutation
- R(b);XP(E)
- Try
- R(F);
- Threat
- QAB(A)
- Vars
- S(g);N_GUARD,XP(G)::S(N)
- S(g);N_GUARD,XP(J)::S(N)
- P(f);OGATE,XR(H)::QAB1(A),XP(f)
- S(g);N_GUARD::S(N)
- Refutation
- R(b);XP(E)
- Try
- R(H);XP(c)
- Threat
- QAB(A)
- Vars
- S(g);N_GUARD,XP(J)::S(N)
- P(f);N_GUARD::QAB1(A)
- Refutation
- S(g);XP(G)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(f);OGATE,P_SPINP(f),XR(H)::QAB1(A),XP(f)
- P(f);::QAB(A)+R(H),XP(f)
- Refutation
- P(c);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(b);OGATE,XP(E)::QAB(A)+R(F),XR(b)
- S(g);N_GUARD::S(N)
- Refutation
- P(f);XR(H)
- Try
- P(K);
- Threat
- P=Q
- Vars
- R(b);XP(E)::P=Q
- S(g);XP(E)::P=Q
- S(g);OGATE,XP(G)::R1(F),XS(g)
- S(g);OGATE,XP(J)::R1(H),XS(g)
- S(g);XP(K)::S(N),XS(g)
- P(d);XR(F)::P=Q
- P(c);::P=Q
- R(b);::P=Q
- S(g);::P=Q
- S(g);OGATE::PXS(g)=Q
- P(f);::P=Q
- Refutation
- B(i);XP(M)
- Try
- P(M);
- Threat
- QAB(M)+P(K)
- Vars
- S(g);N_GUARD,XP(J)::S(N)
- Refutation
- B(i);CHECK,XP(J)
- Try
- P(M);
- Threat
- B(M)+P(K)
- Vars
- S(g);N_GUARD,XP(J)::S(N)
- S(g);N_GUARD::S(N),XS(g)
- S(g);N_GUARD::S(N)
- Refutation
- B(i);CHECK,XP(J)
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- K(e);OGATEB,S_FLIGHT,XR(F)::QAB1(A)
- K(e);OGATEB,S_FLIGHT,XR(H)::QAB(A)
- K(e);S_FLIGHT,XP(K)::P=Q
- P(f);::S(I),XP(f)
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