MESON Chess Problem Database
Problem Display
PID: 203447 (8/1p2N2b/3R1Np1/4k1K1/n4p2/3Rn3/8/4B3 w - - 0 1)
Opdenoordt, Joseph J
De Maasbode, 1924
#2
6 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bg8
- 2.Sxg6#
- 1...Sd1
- 2.R3d5#
- 1...Sf1
- 2.R3d5#
- 1...Sc2
- 2.R3d5#
- 1...Sg2
- 2.R3d5#
- 1...Sc4
- 2.R3d5#
- 1...Sg4
- 2.R3d5#
- 1...Sd5
- 2.R3xd5#
- 1...Sf5
- 2.R3d5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...Sb6
- 2.Bc3#
- 1...f3
- 2.Bg3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Bg8
- Tries
- 1.Bd2?
- 1...Sd5
- 2.R3xd5#
- 1...Bg8
- 2.Sxg6#
- 1...Sd1
- 2.Bxf4#
- 2.R3d5#
- 1...Sf1
- 2.Bxf4#
- 2.R3d5#
- 1...Sc2
- 2.Bxf4#
- 2.R3d5#
- 1...Sg2
- 2.R3d5#
- 1...Sc4
- 2.Bxf4#
- 2.R3d5#
- 1...Sg4
- 2.Bxf4#
- 2.R3d5#
- 1...Sf5
- 2.Bxf4#
- 2.R3d5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...Sb6
- 2.Bc3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...f3!
- 1...Sd5
- 1.Bg3?
- threat
- 2.Bxf4#
- 1...Sd5
- 2.R3xd5#
- 1...Sg2
- 2.R3d5#
- 1...fxg3!
- threat
- 1.Ba5?
- 1...Sd5
- 2.R3xd5#
- 1...Bg8
- 2.Sxg6#
- 1...Sd1
- 2.R3d5#
- 1...Sf1
- 2.R3d5#
- 1...Sc2
- 2.R3d5#
- 1...Sg2
- 2.R3d5#
- 1...Sc4
- 2.R3d5#
- 1...Sg4
- 2.R3d5#
- 1...Sf5
- 2.R3d5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...Sb6
- 2.Bc3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...f3!
- 1...Sd5
- 1.Rd1?
- 1...Sd5
- 2.R1xd5#
- 1...Bg8
- 2.Sxg6#
- 1...Sf1
- 2.R1d5#
- 1...Sc2
- 2.R1d5#
- 1...Sg2
- 2.R1d5#
- 1...Sc4
- 2.R1d5#
- 1...Sg4
- 2.R1d5#
- 1...Sf5
- 2.R1d5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...Sb6
- 2.Bc3#
- 1...f3
- 2.Bg3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sxd1!
- 1...Sd5
- 1.Rxe3+?
- 1...fxe3
- 2.Bg3#
- 1...Kxd6!
- 1...fxe3
- 1.Rb6?
- 1...Bg8
- 2.Sxg6#
- 1...Sd1
- 2.Rd5#
- 1...Sf1
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sg2
- 2.Rd5#
- 1...Sc4
- 2.Rd5#
- 1...Sg4
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sf5
- 2.Rd5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...f3
- 2.Bg3#
- 1...Sxb6!
- 1...Bg8
- 1.Bd2?
- Keys
- 1.Bb4!
- 1...Bg8
- 2.Sxg6#
- 1...Sd1
- 2.R3d5#
- 1...Sf1
- 2.R3d5#
- 1...Sc2
- 2.R3d5#
- 1...Sg2
- 2.R3d5#
- 1...Sc4
- 2.R3d5#
- 1...Sg4
- 2.R3d5#
- 1...Sd5
- 2.R3xd5#
- 1...Sf5
- 2.R3d5#
- 1...Sb2
- 2.Bc3#
- 1...Sc3
- 2.Bxc3#
- 1...Sc5
- 2.Bc3#
- 1...Sb6
- 2.Bc3#
- 1...f3
- 2.Rxe3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Bg8
- 1.Bb4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(c);OGATEB::B(A)
- P(f);N_GUARD::S(F)
- Tries
- Try
- B(A);
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);N_GUARD::S(F)
- Refutation
- P(c);
- Try
- B(A);P_PINP(c)
- Threat
- B(A),XP(c)
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- S(a);N_GUARD::R1(B)
- Refutation
- P(c);N_SPINP(c),XB(A)
- Try
- B(A);
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(f);N_GUARD::S(F)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- S(a);N_GUARD::R1(B),XS(a)
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(c);OGATEB::B(A)
- P(f);N_GUARD::S(F)
- Refutation
- S(a);XR(B)
- Try
- R(B);CHECK,XS(a)
- Vars
- P(c);XR(B)::B(A)
- Refutation
- K(d);S_FLIGHT,XR(D)
- Try
- R(D);
- Vars
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(c);OGATEB::B(A)
- Refutation
- S(b);XR(D)
- Try
- Actual
- B(A);
- Vars
- B(g);N_GUARD::S(F),XP(e)
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::B(A),XS(b)
- P(c);N_GUARD::R(B),XS(a)
- P(f);N_GUARD::S(F)
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).