MESON Chess Problem Database
Problem Display
PID: 58112 (4nN2/4PNnB/4R1P1/p3Bk1p/R4p1p/6bP/4P2p/7K w - - 0 1)
Andersson, Gunnar
Hultberg, Gustav Herbert
1st Prize, Parallele 50, 1950
#2
11 + 9
| 268 | Chess Life | 1958 |
| 133 | The Problemist Supplement | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Sxe6
- 2.g7#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Be1
- Tries
- 1.Bxf4?
- threat
- 2.Sh6#
- 1...Bxf4
- 2.e4#
- 1...Sxe6!
- threat
- 1.Bf6?
- threat
- 2.Sh6#
- 2.Rxa5#
- 1...Sxf6
- 2.Re5#
- 1...Be1
- 2.Sh6#
- 1...Bf2
- 2.Sh6#
- 1...Sd6
- 2.Sxd6#
- 2.Sh6#
- 1...Sc7
- 2.Sd6#
- 2.Sh6#
- 1...f3
- 2.Sh6#
- 1...Sxe6!
- threat
- 1.Bxg7?
- threat
- 2.Rxa5#
- 2.Re5#
- 1...Sxg7
- 2.Rxa5#
- 1...Be1
- 2.Re5#
- 1...Bf2
- 2.Re5#
- 1...Sd6
- 2.Re5#
- 2.Rf6#
- 1...Sf6
- 2.Re5#
- 2.Rxf6#
- 1...Sc7
- 2.Re5#
- 2.Rf6#
- 1...f3!
- threat
- 1.Bg8?
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Sxe6!
- 1...Be1
- 1.Rc4?
- 1...Sxe6
- 2.g7#
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...a4!
- 1...Sxe6
- 1.Rd4?
- 1...Sxe6
- 2.g7#
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...a4!
- 1...Sxe6
- 1.Ra6?
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Se6
- 2.g7#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Sd6!
- 1...Be1
- 1.Rb6?
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Se6
- 2.g7#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Sd6!
- 1...Be1
- 1.Rc6?
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Se6
- 2.g7#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Sd6!
- 1...Be1
- 1.Rd6?
- 1...Be1
- 2.Rxf4#
- 1...Bf2
- 2.Rxf4#
- 1...Se6
- 2.g7#
- 1...Sf6
- 2.Rxf6#
- 1...Sc7
- 2.Rf6#
- 1...f3
- 2.e4#
- 1...Sxd6!
- 1...Be1
- 1.e3?
- threat
- 2.e4#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...fxe3!
- threat
- 1.Bxf4?
- Keys
- 1.Rxa5!
- threat
- 2.Ba1#
- 2.Bb2#
- 2.Bc3#
- 2.Bd4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 1...Ke4
- 2.Bxg7#
- 1...Sxe6
- 2.g7#
- 1...Be1
- 2.Bc3#
- 1...Bf2
- 2.Bd4#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bxf6#
- 1...Sc7
- 2.Bxc7#
- 1...f3
- 2.Bxg3#
- threat
- 1.Rxa5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::R1(D),XP(c)
- S(h);OGATE,XR(F)::B(J)+P(G)
- S(i);N_GUARD::R1(F)
- S(i);N_GUARD::R1(F),XS(i)
- P(c);N_GUARD::P(B)
- Tries
- Try
- B(E);XP(c)
- Threat
- S(I)
- Vars
- B(b);SBLOCK,XB(E)::P(B)
- Refutation
- S(h);XR(F)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(i);SBLOCK,XB(E)::R1(F)
- B(b);::S(I)
- P(c);::S(I)
- Refutation
- S(h);XR(F)
- Try
- B(E);XS(h)
- Threat
- DUALS(2)
- Vars
- S(i);XB(E)::R(D),XP(e)
- B(b);::R1(F)
- Refutation
- P(c);
- Try
- B(J);
- Vars
- B(b);N_GUARD::R1(D),XP(c)
- S(i);N_GUARD::R1(F)
- S(i);N_GUARD::R1(F),XS(i)
- P(c);N_GUARD::P(B)
- Refutation
- S(h);XR(F)
- Try
- R(D);
- Vars
- S(h);OGATE,XR(F)::B(J)+P(G)
- B(b);N_GUARD::R1(D),XP(c)
- S(i);N_GUARD::R1(F)
- S(i);N_GUARD::R1(F),XS(i)
- P(c);N_GUARD::P(B)
- Refutation
- P(e);
- Try
- R(D);
- Vars
- S(h);OGATE,XR(F)::B(J)+P(G)
- B(b);N_GUARD::R1(D),XP(c)
- S(i);N_GUARD::R1(F)
- S(i);N_GUARD::R1(F),XS(i)
- P(c);N_GUARD::P(B)
- Refutation
- P(e);
- Try
- R(F);
- Vars
- B(b);N_GUARD::R1(D),XP(c)
- S(h);OGATE::B(J)+P(G)
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- P(c);N_GUARD::P(B)
- Refutation
- S(i);
- Try
- R(F);
- Vars
- B(b);N_GUARD::R1(D),XP(c)
- S(h);OGATE::B(J)+P(G)
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- P(c);N_GUARD::P(B)
- Refutation
- S(i);
- Try
- R(F);
- Vars
- B(b);N_GUARD::R1(D),XP(c)
- S(h);OGATE::B(J)+P(G)
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- P(c);N_GUARD::P(B)
- Refutation
- S(i);
- Try
- R(F);
- Vars
- B(b);N_GUARD::R1(D),XP(c)
- S(h);OGATE::B(J)+P(G)
- S(i);N_GUARD::R1(F),XS(i)
- S(i);N_GUARD::R1(F)
- P(c);N_GUARD::P(B)
- Refutation
- S(i);XR(F)
- Try
- P(B);
- Threat
- P(B)
- Vars
- S(i);N_GUARD::R1(F)
- S(i);N_GUARD::R1(F),XS(i)
- Refutation
- P(c);XP(B)
- Try
- Actual
- R(D);XP(e)
- Threat
- DUALS(9)
- Vars
- K(f);S_FLIGHT::R(F)+B(E),XS(h)
- S(h);OGATE,XR(F)::B(J)+P(G)
- B(b);::R(D)+B(E)
- S(i);::R(D)+B(E),XS(i)
- P(c);OGATE::R(D)+B(E),XB(b)
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