MESON Chess Problem Database
Problem Display
PID: 141475 (3bBrr1/3p2BN/Q4pR1/q2NP3/5R1p/3n1PPk/5pnP/5b1K w - - 0 1)
Alaikov, Venelin
Probleemblad, 1976
#2
12 + 12
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Sge1
- 2.Rxh4#
- 1...Se3
- 2.Rxh4#
- 1...hxg3
- 2.Rxg3#
- 1...Sge1
- Tries
- 1.Sdxf6?
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxa6
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 1...Rxg7
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sgxf4
- 2.Sg5#
- 1...Sdxf4
- 2.Sg5#
- 1...Sxe5
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa2
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Qd5
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 2.Rxh4#
- 1...Sc5
- 2.Sg5#
- 1...d5
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 2.Qe6#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 1...Qxe5!
- threat
- 1.Bxf6?
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxd5
- 2.Sg5#
- 1...Qxa6
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sgxf4
- 2.Sg5#
- 1...Sdxf4
- 2.Sg5#
- 1...Sxe5
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Rg7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 2.Rxh4#
- 1...Sc5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 1...Rxg6!
- threat
- 1.Rfxf6?
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxd5
- 2.Sg5#
- 1...Qxa6
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 1...Rxg7
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sxe5
- 2.Sg5#
- 1...Qd2
- 2.Bxd7#
- 1...Qb4
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 1...Sgf4
- 2.Sg5#
- 1...Sdf4
- 2.Sg5#
- 1...Sc5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 1...hxg3!
- threat
- 1.Rgxf6?
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxd5
- 2.Sg5#
- 1...Qxa6
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sgxf4
- 2.Sg5#
- 1...Sdxf4
- 2.Sg5#
- 1...Sxe5
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 2.Rxh4#
- 1...Sc5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 1...Rxg7!
- threat
- 1.exf6?
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxa6
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 1...Rxg7
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sgxf4
- 2.Sg5#
- 1...Sdxf4
- 2.Sg5#
- 1...Qe1
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 2.Rxh4#
- 1...Sc5
- 2.Sg5#
- 1...Se5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- 2.Qc8#
- 1...Qxd5!
- threat
- 1.Sdxf6?
- Keys
- 1.Qxf6!
- threat
- 2.Sg5#
- 2.Bxd7#
- 1...Qxd5
- 2.Sg5#
- 1...Rxf6
- 2.Sg5#
- 1...Rxe8
- 2.Sg5#
- 2.Qf5#
- 1...Rxg7
- 2.Sg5#
- 1...Bxf6
- 2.Bxd7#
- 1...Sgxf4
- 2.Sg5#
- 1...Sdxf4
- 2.Sg5#
- 1...Sxe5
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qc7
- 2.Sg5#
- 1...Qa4
- 2.Sg5#
- 1...Qb5
- 2.Sg5#
- 1...Qa6
- 2.Sg5#
- 1...Qa7
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 1...Se3
- 2.Sg5#
- 2.Rxh4#
- 1...Sc5
- 2.Sg5#
- 1...d6
- 2.Sg5#
- 2.Bd7#
- threat
- 1.Qxf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 15
- REMOVED MATES = 3
- Sets
- S(c);N_GUARD::R1(E),XP(f)
- P(f);OGATE,XP(D)::R1(I),XP(f)
- Tries
- Try
- S(F);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XQ(H)::S(K)
- R(k);XS(F)::S(K)
- R(k);XB(L)::S(K)
- R(l);XB(J)::S(K)
- B(j);XS(F)::B(L),XP(i)
- S(c);XR(E)::S(K)
- S(d);XR(E)::S(K)
- S(d);XP(G)::S(K)
- Q(g);::S(K)
- R(k);::S(K)
- S(d);::S(K)
- Refutation
- Q(g);XP(G)
- Try
- B(J);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XS(F)::S(K)
- Q(g);XQ(H)::S(K)
- R(k);XB(J)::S(K)
- R(k);XB(L)::S(K)
- B(j);XB(J)::B(L),XP(i)
- S(c);XR(E)::S(K)
- S(d);XR(E)::S(K)
- S(d);XP(G)::S(K)
- Q(g);::S(K)
- R(k);::S(K)
- R(l);::S(K)
- S(d);::S(K)
- Refutation
- R(l);XR(I)
- Try
- R(E);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XS(F)::S(K)
- Q(g);XQ(H)::S(K)
- R(k);XR(E)::S(K)
- R(k);XB(L)::S(K)
- R(l);XB(J)::S(K)
- B(j);XR(E)::B(L),XP(i)
- S(d);XP(G)::S(K)
- Q(g);::B(L),XP(i)
- Q(g);::S(K)
- R(k);::S(K)
- S(c);::S(K)
- S(d);::S(K)
- Refutation
- P(f);XP(D)
- Try
- R(I);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XS(F)::S(K)
- Q(g);XQ(H)::S(K)
- R(k);XR(I)::S(K)
- R(k);XB(L)::S(K)
- B(j);XR(I)::B(L),XP(i)
- S(c);XR(E)::S(K)
- S(d);XR(E)::S(K)
- S(d);XP(G)::S(K)
- Q(g);::S(K)
- R(k);::S(K)
- S(d);::S(K)
- Refutation
- R(l);XB(J)
- Try
- P(G);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XQ(H)::S(K)
- R(k);XP(G)::S(K)
- R(k);XB(L)::S(K)
- R(l);XB(J)::S(K)
- B(j);XP(G)::B(L),XP(i)
- S(c);XR(E)::S(K)
- S(d);XR(E)::S(K)
- Q(g);::S(K)
- R(k);::S(K)
- S(d);::S(K)
- Refutation
- Q(g);XS(F)
- Try
- Actual
- Q(H);XP(h)
- Threat
- DUALS(2)
- Vars
- Q(g);XS(F)::S(K)
- R(k);XQ(H)::S(K)
- R(l);XB(J)::S(K)
- B(j);XQ(H)::B(L),XP(i)
- S(c);XR(E)::S(K)
- S(d);XR(E)::S(K)
- S(d);XP(G)::S(K)
- Q(g);::S(K)
- R(k);::S(K)
- S(d);::S(K)
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).