MESON Chess Problem Database
Problem Display
PID: 117797 (4k3/4P3/4K3/4n3/4B3/8/8/8 w - - 0 1)
Niemeijer, Meindert
Inspanning en Ontspanning, 1969
#2
3 + 2
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
| 3713 | Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sd3
- 2.Bc6#
- 2.Bg6#
- 1...Sf3
- 2.Bc6#
- 2.Bg6#
- 1...Sc4
- 2.Bc6#
- 2.Bg6#
- 1...Sg4
- 2.Bc6#
- 2.Bg6#
- 1...Sc6
- 2.Bxc6#
- 2.Bg6#
- 1...Sg6
- 2.Bc6#
- 2.Bxg6#
- 1...Sd7
- 2.Bg6#
- 1...Sf7
- 2.Bc6#
- 1...Sd3
- Tries
- 1.Bd3?
- 1...Sf3
- 2.Bb5#
- 2.Bg6#
- 1...Sc4
- 2.Bg6#
- 1...Sg4
- 2.Bb5#
- 2.Bg6#
- 1...Sc6
- 2.Bg6#
- 1...Sg6
- 2.Bb5#
- 2.Bxg6#
- 1...Sd7
- 2.Bg6#
- 1...Sf7
- 2.Bb5#
- 1...Sxd3!
- 1...Sf3
- 1.Bf3?
- 1...Sd3
- 2.Bh5#
- 2.Bc6#
- 1...Sc4
- 2.Bh5#
- 2.Bc6#
- 1...Sg4
- 2.Bc6#
- 1...Sc6
- 2.Bh5#
- 2.Bxc6#
- 1...Sg6
- 2.Bc6#
- 1...Sd7
- 2.Bh5#
- 1...Sf7
- 2.Bc6#
- 1...Sxf3!
- 1...Sd3
- 1.Bd5?
- 1...Sf3
- 2.Bc6#
- 1...Sd3
- 2.Bc6#
- 1...Sc4
- 2.Bc6#
- 1...Sg4
- 2.Bc6#
- 1...Sc6
- 2.Bxc6#
- 1...Sg6
- 2.Bc6#
- 1...Sf7
- 2.Bc6#
- 1...Sd7!
- 1...Sf3
- 1.Bf5?
- 1...Sd7
- 2.Bg6#
- 1...Sd3
- 2.Bg6#
- 1...Sf3
- 2.Bg6#
- 1...Sc4
- 2.Bg6#
- 1...Sg4
- 2.Bg6#
- 1...Sc6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sf7!
- 1...Sd7
- 1.Bc6+?
- 1...Sd7
- 2.Bxd7#
- 1...Sxc6!
- 1...Sd7
- 1.Bg6+?
- 1...Sf7
- 2.Bxf7#
- 1...Sxg6!
- 1...Sf7
- 1.Bb7?
- 1...Sd3
- 2.Bc6#
- 1...Sf3
- 2.Bc6#
- 1...Sc4
- 2.Bc6#
- 1...Sg4
- 2.Bc6#
- 1...Sc6
- 2.Bxc6#
- 1...Sg6
- 2.Bc6#
- 1...Sf7
- 2.Bc6#
- 1...Sd7!
- 1...Sd3
- 1.Bh7?
- 1...Sd7
- 2.Bg6#
- 1...Sd3
- 2.Bg6#
- 1...Sf3
- 2.Bg6#
- 1...Sc4
- 2.Bg6#
- 1...Sg4
- 2.Bg6#
- 1...Sc6
- 2.Bg6#
- 1...Sg6
- 2.Bxg6#
- 1...Sf7!
- 1...Sd7
- 1.Ba8?
- 1...Sd3
- 2.Bc6#
- 1...Sf3
- 2.Bc6#
- 1...Sc4
- 2.Bc6#
- 1...Sg4
- 2.Bc6#
- 1...Sc6
- 2.Bxc6#
- 1...Sg6
- 2.Bc6#
- 1...Sf7
- 2.Bc6#
- 1...Sd7!
- 1...Sd3
- 1.Bd3?
- Keys
- 1.Bc2!
- 1...Sd3
- 2.Ba4#
- 1...Sf3
- 2.Ba4#
- 2.Bg6#
- 1...Sc4
- 2.Ba4#
- 2.Bg6#
- 1...Sg4
- 2.Ba4#
- 2.Bg6#
- 1...Sc6
- 2.Bg6#
- 1...Sg6
- 2.Ba4#
- 2.Bxg6#
- 1...Sd7
- 2.Bg6#
- 1...Sf7
- 2.Ba4#
- 1...Sd3
- 1.Bc2!
Anticipated by 17225(1925), 227488(1926), 231658(1927)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::B(A)
- Tries
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- Refutation
- S(a);XB(A)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- Refutation
- S(a);XB(A)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Refutation
- S(a);
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Refutation
- S(a);
- Try
- B(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
- Refutation
- S(a);XB(A)
- Try
- B(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
- Refutation
- S(a);XB(A)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Refutation
- S(a);
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Refutation
- S(a);
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Refutation
- S(a);
- Try
- Actual
- B(A);
- Vars
- S(a);N_GUARD::B(A)
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).