MESON Chess Problem Database
Problem Display
PID: 17386 (b2b1B2/2pPnp1r/5p1p/R1P1N3/3k1P1Q/1PN2p2/1P3P2/1B1K3n w - - 0 1)
Ekstrom, Sven Johan Adrian
Froberg, Johan Hilding Laurentius
1st Prize, Lunds Dagblad, 1946
#2
13 + 11
| 1099 | WCSC | 1995 |
| 259 | Thema Danicum | 1996 |
| 5396 | World Chess Solving Championship 1977-1996 | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Sxf2+
- 2.Qxf2#
- 1...Sd5
- 2.Sb5#
- 2.Sxf3#
- 1...Sf5
- 2.Ra4#
- 1...Sc6
- 2.Sxf3#
- 1...Sg6
- 2.Ra4#
- 1...Sc8
- 2.Ra4#
- 1...Sg8
- 2.Ra4#
- 1...c6
- 2.Sxf3#
- 1...Sxf2+
- Tries
- 1.Sd3?
- threat
- 2.Ra4#
- 2.Qxf6#
- 1...Sxf2+
- 2.Qxf2#
- 1...Bd5
- 2.Qxf6#
- 1...Bc6
- 2.Qxf6#
- 1...Sf5
- 2.Ra4#
- 1...Sc6
- 2.f5#
- 1...Sg6
- 2.Ra4#
- 1...Sc8
- 2.Ra4#
- 1...Sg8
- 2.Ra4#
- 1...f5
- 2.Ra4#
- 2.Qf6#
- 1...Sd5!
- threat
- 1.Sg4?
- threat
- 2.Qxf6#
- 1...Sxf2+
- 2.Qxf2#
- 1...Sd5
- 2.Sb5#
- 1...Sf5
- 2.Ra4#
- 1...Sg6
- 2.Ra4#
- 1...Sc8
- 2.Ra4#
- 1...Sg8
- 2.Ra4#
- 1...f5
- 2.Qf6#
- 1...Sc6!
- threat
- 1.Sc6+?
- 1...Bxc6
- 2.Qxf6#
- 1...Sxc6!
- 1...Bxc6
- 1.Sxf7?
- threat
- 2.Qxf6#
- 1...Sxf2+
- 2.Qxf2#
- 1...Sd5
- 2.Sb5#
- 1...Sf5
- 2.Ra4#
- 1...Sc6
- 2.f5#
- 1...Sg6
- 2.Ra4#
- 1...Sc8
- 2.Ra4#
- 1...Sg8
- 2.Ra4#
- 1...f5
- 2.Qf6#
- 1...Rxf7!
- threat
- 1.Bxe7?
- threat
- 2.Ra4#
- 1...Sxf2+
- 2.Qxf2#
- 1...Bd5
- 2.Sb5#
- 1...Bc6
- 2.Sxc6#
- 1...Bxe7!
- threat
- 1.Qxf6?
- threat
- 2.Sd3#
- 2.Sxf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Bc6
- 2.Sd3#
- 2.Sxf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Sd5
- 2.Sb5#
- 2.Sxf3#
- 2.Sc6#
- 1...Sf5
- 2.Sxf3#
- 2.Sc6#
- 2.Ra4#
- 1...Sc6
- 2.Sxf3#
- 2.Sxc6#
- 1...Sg6
- 2.Sxf3#
- 2.Sc6#
- 2.Ra4#
- 1...Sc8
- 2.Sxf3#
- 2.Sc6#
- 2.Ra4#
- 1...Sg8
- 2.Sxf3#
- 2.Sc6#
- 2.Ra4#
- 1...c6
- 2.Sd3#
- 2.Sxf3#
- 2.Sc4#
- 2.Sg4#
- 2.Sxc6#
- 2.Sg6#
- 2.Sxf7#
- 1...Sxf2+!
- threat
- 1.f5+?
- 1...Be4
- 2.Sxf3#
- 2.Qxe4#
- 1...Kxe5!
- 1...Be4
- 1.c6?
- threat
- 2.Sxf3#
- 2.f5#
- 1...Sxf2+
- 2.Qxf2#
- 1...fxe5
- 2.fxe5#
- 1...Rg7
- 2.Sxf3#
- 1...Sg3
- 2.Sxf3#
- 1...Sd5
- 2.Sb5#
- 2.Sxf3#
- 2.Bc5#
- 2.Rxd5#
- 1...Sf5
- 2.Sxf3#
- 2.Bc5#
- 2.Ra4#
- 2.Rd5#
- 1...Sg6
- 2.Sxf3#
- 2.Bc5#
- 2.Ra4#
- 2.Rd5#
- 1...f5
- 2.Sxf3#
- 1...Bxc6!
- threat
- 1.Sd3?
- Keys
- 1.Sg6!
- threat
- 2.Qxf6#
- 1...Sxf2+
- 2.Qxf2#
- 1...Sxg6
- 2.Ra4#
- 1...Sd5
- 2.Sb5#
- 1...Sf5
- 2.Ra4#
- 1...Sc6
- 2.f5#
- 1...Sc8
- 2.Ra4#
- 1...Sg8
- 2.Ra4#
- 1...f5
- 2.Qf6#
- threat
- 1.Sg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- S(g);::R(I)
- S(g);S_CUTB(j)::S(K),XP(b)
- P(f);S_CUTB(j)::S(K),XP(b)
- Tries
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- B(j);::QAB(H),XP(d)
- S(g);::R(I)
- S(g);S_CUTB(j)::QAR(H)+P(G)
- Refutation
- S(g);
- Try
- S(K);
- Threat
- QAB(H),XP(d)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- S(g);SBLOCK::S(F)
- S(g);::R(I)
- P(d);::QAB(H)
- Refutation
- S(g);
- Try
- S(K);CHECK
- Vars
- B(j);XS(K)::QAB(H),XP(d)
- Refutation
- S(g);XS(K)
- Try
- S(K);XP(h)
- Threat
- QAB(H),XP(d)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- S(g);SBLOCK::S(F)
- S(g);::R(I)
- S(g);S_CUTB(j)::QAR(H)+P(G)
- P(d);::QAB(H)
- Refutation
- R(i);XS(K)
- Try
- B(M);XS(g)
- Threat
- R(I)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- B(j);SBLOCK::S(F)
- B(j);N_GUARD::S(K),XB(j)
- Refutation
- B(k);XB(M)
- Try
- Q(H);XP(d)
- Threat
- DUALS(7)
- Refutation
- S(a);CHECK,XP(D)
- Try
- P(G);CHECK
- Refutation
- K(c);S_FLIGHT,XS(K)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- P(d);OGATE,XS(K)::QAR(H)+P(G),XP(d)
- R(i);::S(K),XP(b)
- S(a);::S(K),XP(b)
- P(d);::S(K),XP(b)
- Refutation
- B(j);XP(J)
- Try
- Actual
- S(K);
- Threat
- QAB(H),XP(d)
- Vars
- S(a);CHECK,OGATE,XP(D)::QAB(H),XS(a)
- S(g);XS(K)::R(I)
- S(g);SBLOCK::S(F)
- S(g);::R(I)
- S(g);S_CUTB(j)::QAR(H)+P(G)
- P(d);::QAB(H)
Developed and maintained by Brian Stephenson.
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