MESON Chess Problem Database
Problem Display
PID: 202467 (6R1/5Bp1/4Pk2/5N1R/1N1PPbP1/4n2K/8/8 w - - 0 1)
Oosterholt, Cornelis Johannes
De Telegraaf, 1923
#2
10 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sxg4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sxf5
- 2.Sd5#
- 1...g5
- 2.Rh6#
- 2.Rg6#
- 1...g6
- 2.Rxg6#
- 1...Bh2
- Tries
- 1.Sxe3?
- threat
- 2.Sed5#
- 2.Sbd5#
- 1...Bxe3
- 2.Sd5#
- 1...Ke7!
- threat
- 1.Rh6+?
- 1...Kg5
- 2.Rg6#
- 2.Rxg7#
- 1...gxh6
- 2.Rg6#
- 1...g6
- 2.Rhxg6#
- 2.Rgxg6#
- 1...Bxh6!
- 1...Kg5
- 1.Ra8?
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...g6!
- 1...Sxg4
- 1.Rb8?
- 1...Bxb8
- 2.g5#
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...g6!
- 1...Bxb8
- 1.Rc8?
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...g6!
- 1...Sxg4
- 1.Rd8?
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...g6!
- 1...Sxg4
- 1.Re8?
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 2.Rxf5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...g6!
- 1...Sxg4
- 1.Rgh8?
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.R5h6#
- 2.R8h6#
- 1...g6!
- 1...Sxg4
- 1.Sxe3?
- Keys
- 1.Rf8!
- 1...Sxg4
- 2.Sd5#
- 1...Sxf5
- 2.Sd5#
- 1...g6
- 2.Bg8#
- 1...Bh2
- 2.g5#
- 1...Bg3
- 2.g5#
- 1...Be5
- 2.g5#
- 1...Bg5
- 2.e5#
- 1...Bd6
- 2.g5#
- 1...Bh6
- 2.e5#
- 1...Bc7
- 2.g5#
- 1...Bb8
- 2.g5#
- 1...Sd1
- 2.Sd5#
- 1...Sf1
- 2.Sd5#
- 1...Sc2
- 2.Sd5#
- 1...Sg2
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...g5
- 2.Rh6#
- 1...Sxg4
- 1.Rf8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XS(F)::S(B)
- P(d);OGATE::R1(J),XP(d)
- Tries
- Try
- S(F);XS(a)
- Threat
- DUALS(2)
- Vars
- B(b);XS(F)::S(B)
- Refutation
- K(c);S_FLIGHT
- Try
- R(G);CHECK
- Vars
- P(d);OGATE,XR(G)::R1(J)
- Refutation
- B(b);XR(G)
- Try
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- B(b);N_GUARD,XR(J)::P(E)
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
- Refutation
- P(d);
- Try
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- P(d);
- Try
- Actual
- R(J);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD,XS(F)::S(B)
- P(d);SBLOCK::R(J)+B(I)
- B(b);N_GUARD::P(E)
- B(b);N_GUARD::P(D)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(d);N_GUARD,SBLOCK,S_CUTB(b)::R(G)
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).