MESON Chess Problem Database
Problem Display
PID: 263858 (4K1kr/P4pPb/5Bn1/6n1/8/8/Q7/8 w - - 0 1)
Bernstein, Osip Samolovich
Tijdschrift vd NSB, 1909
#2
5 + 6
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf3
- Tries
- 1.Qb3?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.Qc4?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.Qd5?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.a8Q?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.Kd7#
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.Kd7#
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.Kxe7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.a8S?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.a8B?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.a8R?
- 1...Sf3
- 2.Qxf7#
- 1...Sh3
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sf4
- 2.Kd7#
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.Kd7#
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.Ke7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.Kxe7#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6!
- 1...Sf3
- 1.Qb3?
- Keys
- 1.Qg2!
- 1...Se6
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf3
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh3
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sh4
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se5
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se7
- 2.gxh8Q#
- 2.gxh8R#
- 1...Sf8
- 2.gxf8Q#
- 2.gxf8R#
- 2.gxh8Q#
- 2.gxh8R#
- 1...Se6
- 1.Qg2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Tries
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Refutation
- S(a);N_SPINP(c)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Refutation
- S(a);N_SPINP(c)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Refutation
- S(a);N_SPINP(c)
- Try
- P(C);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- Refutation
- S(a);N_SPINP(c)
- Try
- P(C);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Refutation
- S(a);N_SPINP(c)
- Try
- P(C);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- S(b);N_GUARD::PXR(f)=Q
- Refutation
- S(a);N_SPINP(c)
- Try
- P(C);
- Vars
- S(a);N_GUARD::QAB1(A),XP(c)
- Refutation
- S(a);N_SPINP(c)
- Try
- Actual
- Q(A);N_PINP(c)
- Vars
- S(a);S_CUTS(b)::PXR(f)=Q
- S(b);N_GUARD::PXR(f)=Q
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).