MESON Chess Problem Database
Problem Display
PID: 138662 (7K/B7/R3n3/3k4/8/1PpN1P2/2n3N1/3R4 w - - 0 1)
Chepizhni, Viktor Ivanovich
1st HM., Ryazansky Ty., 1966
#2
8 + 4
| 6167 | Viktor Chepizhny | 2007 |
| 5454 | Near Snap | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Scd4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sa1
- Tries
- 1.Kg8?
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Scd4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sc5!
- 1...Sa1
- 1.Bb8?
- threat
- 2.Rd6#
- 1...Kd4
- 2.Rd6#
- 1...Sc7!
- threat
- 1.Rda1?
- 1...Sxa1
- 2.Se3#
- 1...Scd4
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 2.R1a5#
- 1...Sg5
- 2.Sgf4#
- 2.R1a5#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 2.R1a5#
- 1...Sd8
- 2.Sgf4#
- 2.R1a5#
- 1...Sf8
- 2.Sgf4#
- 2.R1a5#
- 1...Sc5!
- 1...Sxa1
- 1.Rb1?
- 1...Scd4
- 2.Se3#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sc5!
- 1...Scd4
- 1.Rc1?
- 1...Scd4
- 2.Se3#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sc5!
- 1...Scd4
- 1.Re1?
- threat
- 2.Re5#
- 1...Sxe1
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc5!
- threat
- 1.Rf1?
- 1...Scd4
- 2.Se3#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sc5!
- 1...Scd4
- 1.Rg1?
- 1...Scd4
- 2.Se3#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Sc5!
- 1...Scd4
- 1.Rh1?
- 1...Scd4
- 2.Se3#
- 1...Sa1
- 2.Se3#
- 1...Se1
- 2.Se3#
- 1...Sa3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb4
- 2.Se3#
- 1...Sed4
- 2.Sgf4#
- 1...Sf4
- 2.Sgxf4#
- 1...Sg5
- 2.Sgf4#
- 1...Sc7
- 2.Sgf4#
- 2.Rh5#
- 1...Sg7
- 2.Sgf4#
- 1...Sd8
- 2.Sgf4#
- 2.Rh5#
- 1...Sf8
- 2.Sgf4#
- 2.Rh5#
- 1...Sc5!
- 1...Scd4
- 1.Kg8?
- Keys
- 1.Bd4!
- 1...Kxd4
- 2.Rd6#
- 1...Scxd4
- 2.Se3#
- 1...Sexd4
- 2.Sgf4#
- 1...Sa1
- 2.Sb4#
- 1...Se1
- 2.Sb4#
- 1...Sa3
- 2.Sb4#
- 1...Se3
- 2.Sb4#
- 1...Sb4
- 2.Sxb4#
- 1...Sf4
- 2.Sdxf4#
- 1...Sc5
- 2.Sdf4#
- 1...Sg5
- 2.Sdf4#
- 1...Sc7
- 2.Sdf4#
- 1...Sg7
- 2.Sdf4#
- 1...Sd8
- 2.Sdf4#
- 1...Sf8
- 2.Sdf4#
- 1...Kxd4
- 1.Bd4!
Anticipated by 17972(1952), 18687(1957), 155625(1963)
There are these versions: 153998
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 11
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- B(G);
- Threat
- R1(F)
- Vars
- K(c);P-FLIGHT::R(F)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD,XR(A)::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- R(A);
- Threat
- R1(A)
- Vars
- S(a);N_GUARD,XR(A)::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- R(A);
- Vars
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Refutation
- S(d);
- Try
- Actual
- B(G);
- Vars
- K(c);P-FLIGHT,XB(G)::R(F)
- S(a);N_GUARD,SBLOCK,XB(G)::S(B)
- S(d);N_GUARD,SBLOCK,XB(G)::S(B)
- S(a);N_GUARD::S(D)
- S(a);N_GUARD::S(D),XS(a)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD::S(D)
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