MESON Chess Problem Database
Problem Display
PID: 263293 (3K4/2p5/2P1pBNR/3nPkp1/1p1P4/1B1N1P2/2P5/8 w - - 0 1)
Erokhin, Vladimir Alekseevich
2nd Comm., Szachy, 1975
#2
11 + 6
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Sxf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Sc3
- Tries
- 1.Kc8?
- 1...Se7+
- 2.Sxe7#
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...g4
- 2.Sh4#
- 1...Sb6+!
- 1...Se7+
- 1.Ke8?
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Sxf6+!
- 1...Sc3
- 1.Sc5?
- 1...Sxf6
- 2.Bxe6#
- 1...Sc3
- 2.Bxe6#
- 1...Se3
- 2.Bxe6#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Bxe6#
- 1...Se7
- 2.Bxe6#
- 1...g4!
- 1...Sxf6
- 1.Sf8?
- 1...Sxf6
- 2.Bxe6#
- 2.Rxf6#
- 1...Sc3
- 2.Bxe6#
- 1...Se3
- 2.Bxe6#
- 1...Sb6
- 2.Bxe6#
- 1...Se7
- 2.Bxe6#
- 1...g4
- 2.Rh5#
- 1...Sf4!
- 1...Sxf6
- 1.Ba2?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...b3!
- 1...Sxf6
- 1.Ba4?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...b3!
- 1...Sxf6
- 1.Bc4?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...b3!
- 1...Sxf6
- 1.Bg7?
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4!
- 1...Sc3
- 1.Bh8?
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4!
- 1...Sc3
- 1.Rh1?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Kxg6!
- 1...Sxf6
- 1.Rh2?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Kxg6!
- 1...Sxf6
- 1.Rh3?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Kxg6!
- 1...Sxf6
- 1.Rh5?
- threat
- 2.Sh4#
- 2.Rxg5#
- 1...Sxf6
- 2.Sh4#
- 2.Se7#
- 1...Kxg6!
- threat
- 1.Rh7?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Kxg6!
- 1...Sxf6
- 1.Rh8?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...Kxg6!
- 1...Sxf6
- 1.c3?
- 1...Sxc3
- 2.Se7#
- 1...Sxf6
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...bxc3!
- 1...Sxc3
- 1.c4?
- 1...Sxf6
- 2.Se7#
- 1...Sc3
- 2.Se7#
- 1...Se3
- 2.Se7#
- 1...Sf4
- 2.Se7#
- 1...Sb6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...g4
- 2.Sh4#
- 1...bxc4 ep!
- 1...Sxf6
- 1.Kc8?
- Keys
- 1.Sdf4!
- 1...Sxf4
- 2.Se7#
- 1...Sxf6
- 2.Bxe6#
- 1...gxf4
- 2.Sh4#
- 1...Sc3
- 2.Bxe6#
- 1...Se3
- 2.Bxe6#
- 1...Sb6
- 2.Bxe6#
- 1...Se7
- 2.Bxe6#
- 1...g4
- 2.Rh5#
- 1...Sxf4
- 1.Sdf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::S(I)
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Tries
- Try
- K(K);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::S(I),XS(b)
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- P(d);N_GUARD::S(I)
- Refutation
- S(b);CHECK
- Try
- K(K);P-FLIGHT
- Vars
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- S(b);CHECK,XB(H)
- Try
- S(C);
- Vars
- S(b);OGATE,XB(H)::B(B),XP(e)
- S(b);OGATE::B(B),XP(e)
- S(b);N_GUARD,SBLOCK::S(I)
- Refutation
- P(d);
- Try
- S(I);
- Vars
- S(b);OGATE::B(B),XP(e)
- P(d);OGATEB::R(J)
- Refutation
- S(b);
- Try
- B(B);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- P(a);
- Try
- B(H);
- Vars
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- Refutation
- P(d);
- Try
- B(H);
- Vars
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- K(c);S_FLIGHT,XS(I)
- Try
- R(J);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- K(c);S_FLIGHT,XS(I)
- Try
- R(J);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- K(c);S_FLIGHT,XS(I)
- Try
- R(J);P_PINP(d)
- Threat
- DUALS(2)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT,XS(I)
- Try
- R(J);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- K(c);S_FLIGHT,XS(I)
- Try
- R(J);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- K(c);S_FLIGHT,XS(I)
- Try
- P(A);
- Vars
- S(b);N_GUARD,XP(A)::S(I)
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- P(a);XP(A)
- Try
- P(A);
- Vars
- S(b);N_GUARD,XB(H)::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
- P(d);N_GUARD::S(I)
- Refutation
- P(a);EP,XP(A)
- Try
- Actual
- S(C);
- Vars
- S(b);N_GUARD,SBLOCK,XS(C)::S(I)
- S(b);OGATE,XB(H)::B(B),XP(e)
- P(d);N_GUARD,SBLOCK,XS(C)::S(I)
- S(b);OGATE::B(B),XP(e)
- P(d);OGATEB::R(J)
Developed and maintained by Brian Stephenson.
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