MESON Chess Problem Database
Problem Display
PID: 90278 (3B4/2pP4/1pR1p3/1p2kr2/1N1p3R/3p1PnB/3P2K1/8 w - - 0 1)
Viksna, Kristaps
Die Schwalbe, 1961
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Rxe6#
- 1...Rf4
- 2.Rxe6#
- 1...Rg5
- 2.Rxe6#
- 1...Rh5
- 2.Rxe6#
- 1...Rf6
- 2.Bxc7#
- 1...Rf7
- 2.Rxe6#
- 1...Rf8
- 2.Rxe6#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Rxf3
- Tries
- 1.Kg1?
- 1...Rxf3
- 2.Rxe6#
- 1...Rf4
- 2.Rxe6#
- 1...Rg5
- 2.Rxe6#
- 1...Rh5
- 2.Rxe6#
- 1...Rf6
- 2.Bxc7#
- 1...Rf7
- 2.Rxe6#
- 1...Rf8
- 2.Rxe6#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Se2+!
- 1...Rxf3
- 1.Kh2?
- 1...Rxf3
- 2.Rxe6#
- 1...Rf4
- 2.Rxe6#
- 1...Rg5
- 2.Rxe6#
- 1...Rh5
- 2.Rxe6#
- 1...Rf6
- 2.Bxc7#
- 1...Rf7
- 2.Rxe6#
- 1...Rf8
- 2.Rxe6#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Sf1+!
- 1...Rxf3
- 1.Bg5?
- 1...Rxf3
- 2.Rxe6#
- 1...Rxg5
- 2.Rxe6#
- 1...Rf4
- 2.Rxe6#
- 1...Rf7
- 2.Rxe6#
- 1...Rf8
- 2.Rxe6#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Rf6!
- 1...Rxf3
- 1.Be7?
- 1...Rxf3
- 2.Rxe6#
- 1...Rf4
- 2.Rxe6#
- 1...Rg5
- 2.Rxe6#
- 1...Rh5
- 2.Rxe6#
- 1...Rf7
- 2.Rxe6#
- 1...Rf8
- 2.Rxe6#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Rf6!
- 1...Rxf3
- 1.f4+?
- 1...Rxf4
- 2.Rxe6#
- 1...Ke4!
- 1...Rxf4
- 1.Kg1?
- Keys
- 1.Rf4!
- 1...Kxf4
- 2.Sxd3#
- 1...Rxf4
- 2.Rxe6#
- 1...Rf6
- 2.Bxc7#
- 1...Rg5
- 2.Bxc7#
- 1...Rh5
- 2.Bxc7#
- 1...Rf7
- 2.Bxc7#
- 1...Rf8
- 2.Bxc7#
- 1...Sf1
- 2.Re4#
- 1...Sh1
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sh5
- 2.Re4#
- 1...Kxf4
- 1.Rf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(f);XP(C)::R1(G),XP(h)
- R(f);::R1(G),XP(h)
- R(f);SBLOCK::B(I),XP(i)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- R(f);XP(C)::R1(G),XP(h)
- R(f);::R1(G),XP(h)
- R(f);SBLOCK::B(I),XP(i)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- S(b);CHECK
- Try
- K(B);P-FLIGHT
- Vars
- R(f);XP(C)::R1(G),XP(h)
- R(f);::R1(G),XP(h)
- R(f);SBLOCK::B(I),XP(i)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- S(b);CHECK
- Try
- B(I);
- Vars
- R(f);XP(C)::R1(G),XP(h)
- R(f);XB(I)::R1(G),XP(h)
- R(f);::R1(G),XP(h)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- R(f);
- Try
- B(I);
- Vars
- R(f);XP(C)::R1(G),XP(h)
- R(f);::R1(G),XP(h)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- R(f);
- Try
- P(C);CHECK
- Vars
- R(f);XP(C)::R1(G),XP(h)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- R(F);
- Vars
- K(e);S_FLIGHT,XR(F)::S(E),XP(a)
- R(f);SBLOCK,XR(F)::R1(G),XP(h)
- R(f);::B(I),XP(i)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
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).