MESON Chess Problem Database
Problem Display
PID: 90077 (5rb1/p7/K4nn1/P2k2PN/R2N4/B3QP2/4P3/8 w - - 0 1)
Sandin, Svante
Die Schwalbe, 1968
#2
10 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf7
- 2.Qe6#
- 1...Ra8
- 2.Sxf6#
- 1...Rb8
- 2.Sxf6#
- 1...Rc8
- 2.Sxf6#
- 1...Rd8
- 2.Sxf6#
- 1...Re8
- 2.Sxf6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Sxf6#
- 1...Bh7
- 2.Qe6#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sxh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Se7
- 2.Sf4#
- 1...Sh8
- 2.Sf4#
- 1...Rf7
- Tries
- 1.Be7?
- 1...Sxh5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Ra8
- 2.Sxf6#
- 1...Rf7
- 2.Qe6#
- 1...Rb8
- 2.Sxf6#
- 1...Rc8
- 2.Sxf6#
- 1...Rd8
- 2.Sxf6#
- 1...Re8
- 2.Sxf6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Sxf6#
- 1...Bh7
- 2.Qe6#
- 1...Sg4
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Sh8
- 2.Sf4#
- 1...Sxe7!
- 1...Sxh5
- 1.Qe5+?
- 1...Sxe5
- 2.Sf4#
- 1...Kxe5!
- 1...Sxe5
- 1.Qe7?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Rc8
- 2.Sxf6#
- 2.Qd6#
- 1...Rd8
- 2.Sxf6#
- 2.Qc5#
- 1...Se4
- 2.Qxe4#
- 2.fxe4#
- 1...Sd7
- 2.Qd6#
- 2.Qe4#
- 2.e4#
- 1...Se8
- 2.Qc5#
- 2.Qe4#
- 2.e4#
- 1...Sxe7!
- threat
- 1.gxf6?
- threat
- 2.Qe4#
- 1...Rxf6+
- 2.Sxf6#
- 1...Re8!
- threat
- 1.Be7?
- Keys
- 1.f4!
- 1...Sxh5
- 2.Qf3#
- 1...Sxf4
- 2.Sxf4#
- 1...Rb8
- 2.Sxf6#
- 1...Rf7
- 2.Qe6#
- 1...Ra8
- 2.Sxf6#
- 1...Rc8
- 2.Sxf6#
- 1...Rd8
- 2.Sxf6#
- 1...Re8
- 2.Sxf6#
- 1...Be6
- 2.Qxe6#
- 1...Bf7
- 2.Sxf6#
- 1...Bh7
- 2.Qe6#
- 1...Se4
- 2.Qb3#
- 1...Sg4
- 2.Qf3#
- 1...Sd7
- 2.Qf3#
- 1...Sh7
- 2.Qf3#
- 1...Se8
- 2.Qf3#
- 1...Sh4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 1...Sxh5
- 1.f4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 10
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);S_CUTB(f)::QAB1(C)
- R(e);N_GUARD::S(I),XS(b)
- B(f);N_GUARD::QAB1(C),XB(f)
- B(f);S_CUTR(e)::S(I),XS(b)
- B(f);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD,XS(I)::QAB1(C)
- S(c);N_GUARD::S(I),XS(c)
- S(c);N_GUARD::S(I)
- Tries
- Try
- B(B);
- Vars
- S(b);N_GUARD,XS(I)::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- R(e);N_GUARD::S(I),XS(b)
- R(e);S_CUTB(f)::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- B(f);S_CUTR(e)::S(I),XS(b)
- B(f);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C)
- S(c);N_GUARD::S(I),XS(c)
- S(c);N_GUARD::S(I)
- Refutation
- S(c);XB(B)
- Try
- Q(C);CHECK
- Vars
- S(c);SBLOCK,XQ(C)::S(I)
- Refutation
- K(a);P-FLIGHT,XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Refutation
- S(c);XQ(C)
- Try
- P(H);XS(b)
- Threat
- QAB1(C)
- Vars
- R(e);CHECK,XP(H)::S(I),XR(e)
- Refutation
- R(e);
- Try
- Actual
- P(D);
- Vars
- S(b);N_GUARD,XS(I)::QAB(C)
- S(c);XP(D)::S(I),XS(c)
- R(e);N_GUARD::S(I),XS(b)
- R(e);S_CUTB(f)::QAB1(C)
- B(f);N_GUARD::QAB1(C),XB(f)
- B(f);S_CUTR(e)::S(I),XS(b)
- B(f);N_GUARD::QAB1(C)
- S(b);SBLOCK::QAB(C)
- S(b);N_GUARD::QAB(C)
- S(c);N_GUARD::QAR1(C)
- S(c);N_GUARD::QAR1(C),XS(c)
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).