MESON Chess Problem Database
Problem Display
PID: 42305 (Q4B2/n7/6P1/3BNqRP/3b1k2/3p1N1p/3PPR1K/8 w - - 0 1)
Erokhin, Vladimir Alekseevich
4th Prize, Moiseev MT, 1984
#2
12 + 6
| 3748 | FIDE Album (1983-1985) | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Qg4
- 2.Sxd3#
- 1...Qe6
- 2.Sxd3#
- 1...Qxg6
- 2.Sxg6#
- 1...Qd7
- 2.Sxd3#
- 1...Qc8
- 2.Sxd3#
- 1...Qf6
- 2.Sxd3#
- 1...Qf7
- 2.Sxd3#
- 1...Qxf8
- 2.Sxd3#
- 2.Qxf8#
- 1...Ba1
- 2.e3#
- 1...Bb2
- 2.e3#
- 1...Bc3
- 2.e3#
- 1...Bxe5
- 2.e3#
- 1...Qg4
- Tries
- 1.Sh4+?
- 1...Kxe5
- 2.Rfxf5#
- 2.Rgxf5#
- 1...Bxf2
- 2.Rxf5#
- 1...Kxg5!
- 1...Kxe5
- 1.Be6?
- threat
- 2.Rxf5#
- 1...Qxe6
- 2.Sxd3#
- 1...Qxg6
- 2.Sxg6#
- 1...Qxe5
- 2.Rg4#
- 1...Qxg5
- 2.Sxd3#
- 1...Qxf8
- 2.Sxd3#
- 2.Rg4#
- 1...Bxe5
- 2.e3#
- 1...Qe4
- 2.Rg4#
- 1...Qg4
- 2.Sxd3#
- 2.Rxg4#
- 1...Qf6
- 2.Sxd3#
- 2.Rg4#
- 1...Qf7
- 2.Sxd3#
- 2.Rg4#
- 1...Sc6!
- threat
- 1.Bh6?
- threat
- 2.Rg4#
- 1...Qxg6
- 2.Sxd4#
- 2.Sxg6#
- 1...Qxe5
- 2.Sxd4#
- 1...Qxg5
- 2.Qf8#
- 1...Bxe5
- 2.Se1#
- 2.Sg1#
- 2.Sd4#
- 2.Sh4#
- 2.e3#
- 1...Qg4
- 2.Sxd3#
- 1...Qe6
- 2.Sxd4#
- 2.Sxd3#
- 1...Qd7
- 2.Sxd4#
- 2.Sxd3#
- 1...Qc8
- 2.Sxd4#
- 2.Sxd3#
- 1...Qf6
- 2.Sxd4#
- 2.Sxd3#
- 1...Qf7
- 2.Sxd4#
- 2.Sxd3#
- 1...Qf8
- 2.Sxd4#
- 2.Sxd3#
- 2.Qxf8#
- 1...Qe4!
- threat
- 1.Qb8?
- threat
- 2.Sxd3#
- 1...Qxg5
- 2.Sxd4#
- 1...Bxe5
- 2.e3#
- 1...dxe2
- 2.Sd3#
- 1...Qxe5!
- threat
- 1.Qc8?
- threat
- 2.Rxf5#
- 2.Qxf5#
- 1...Qxg6
- 2.Sxg6#
- 2.Qg4#
- 1...Qxc8
- 2.Sxd3#
- 1...Qxe5
- 2.Rg4#
- 2.Qg4#
- 1...Qxg5
- 2.Sxd3#
- 1...Qxf8
- 2.Sxd3#
- 2.Rg4#
- 2.Qg4#
- 2.Qxf8#
- 1...Bxe5
- 2.Qxf5#
- 2.e3#
- 1...Qe4
- 2.Rg4#
- 2.Qg4#
- 1...Qg4
- 2.Sxd3#
- 2.Rxg4#
- 2.Qxg4#
- 1...Qe6
- 2.Sxd3#
- 1...Qd7
- 2.Sxd3#
- 1...Qf6
- 2.Sxd3#
- 2.Rg4#
- 2.Qg4#
- 1...Qf7
- 2.Sxd3#
- 2.Rg4#
- 2.Qg4#
- 1...Sxc8!
- threat
- 1.Sh4+?
- Keys
- 1.Bd6!
- threat
- 2.Sxd3#
- 1...Qxe5
- 2.Qf8#
- 1...Qxg5
- 2.Sxd4#
- 1...Bxe5
- 2.e3#
- 1...dxe2
- 2.Sd3#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- Q(e);N_GUARD::S(G),XP(a)
- Q(e);XP(J)::S(G),XQ(e)
- B(c);N_GUARD::P(B)
- B(c);N_GUARD,XS(G)::P(B)
- Tries
- Try
- S(E);CHECK
- Vars
- B(c);XR(C)::R1(H),XQ(e)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- B(F);
- Threat
- R1(H),XQ(e)
- Vars
- Q(e);N_GUARD,XB(F)::S(G),XP(a)
- Q(e);XP(J)::S(G),XQ(e)
- Q(e);N_GUARD,XS(G)::R1(H)
- Q(e);N_GUARD,XR(H)::S(G),XP(a)
- B(c);N_GUARD,XS(G)::P(B)
- Q(e);N_GUARD::R1(H)
- Refutation
- S(f);
- Try
- B(L);
- Threat
- B(L)+R(H),DCHECK
- Vars
- Q(e);XS(G)::R(C)+S(E),XB(c)
- Q(e);OGATEB,P_SPINQ(e),XR(H)::QAR(K)
- Q(e);N_GUARD::S(G),XP(a)
- Refutation
- Q(e);
- Try
- Q(K);
- Threat
- QAB(K)+S(G),DCHECK,XP(a)
- Vars
- Q(e);SBLOCK,XR(H)::R(C)+S(E),XB(c)
- B(c);N_GUARD,P_SPINB(c),XS(G)::P(B)
- P(a);XP(B)::QAB(K)+S(G),DCHECK
- Refutation
- Q(e);P_SPINQ(e),XS(G)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XQ(K)::S(G),XP(a)
- Q(e);N_GUARD,XR(H)::S(G),XP(a)
- Q(e);N_GUARD::S(G),XP(a)
- Refutation
- S(f);XQ(K)
- Try
- Actual
- B(L);
- Threat
- B(L)+S(G),DCHECK,XP(a)
- Vars
- Q(e);OGATEB,P_SPINQ(e),XS(G)::QAR(K)
- Q(e);SBLOCK,XR(H)::R(C)+S(E),XB(c)
- B(c);N_GUARD,P_SPINB(c),XS(G)::P(B)
- P(a);XP(B)::B(L)+S(G),DCHECK
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).