MESON Chess Problem Database
Problem Display
PID: 89981 (8/8/5BQb/2N5/5k2/3pr3/3Kp3/4N3 w - - 0 1)
Niemeijer, Meindert
Die Schwalbe, 1925
#2
5 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf3
- 2.Sg2#
- 2.Se6#
- 1...Rg3
- 2.Se6#
- 2.Qe4#
- 1...Rh3
- 2.Se6#
- 1...Re4
- 2.Scxd3#
- 1...Re5
- 2.Scxd3#
- 1...Re6
- 2.Scxd3#
- 2.Sxe6#
- 1...Re7
- 2.Scxd3#
- 1...Re8
- 2.Scxd3#
- 1...Bg5
- 2.Qxg5#
- 1...Bg7
- 2.Qg5#
- 1...Bf8
- 2.Qg5#
- 1...Rf3
- Tries
- 1.Bh4?
- 1...Bg5
- 2.Qxg5#
- 1...Rg3
- 2.Bxg3#
- 2.Qe4#
- 1...Rf3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Re4
- 2.Scxd3#
- 2.Bg3#
- 2.Qxe4#
- 1...Re5
- 2.Scxd3#
- 2.Bg3#
- 1...Re6
- 2.Scxd3#
- 2.Bg3#
- 1...Re7
- 2.Scxd3#
- 2.Bg3#
- 1...Re8
- 2.Scxd3#
- 2.Bg3#
- 1...Bg7
- 2.Qg5#
- 1...Bf8
- 2.Qg5#
- 1...Ke5!
- 1...Bg5
- 1.Be5+?
- 1...Rxe5
- 2.Scxd3#
- 1...Kxe5!
- 1...Rxe5
- 1.Be7?
- 1...Rxe7
- 2.Scxd3#
- 1...Bg5
- 2.Qxg5#
- 1...Rg3
- 2.Bd6#
- 2.Qe4#
- 1...Rf3
- 2.Bd6#
- 1...Rh3
- 2.Bd6#
- 1...Re4
- 2.Scxd3#
- 1...Re5
- 2.Scxd3#
- 1...Re6
- 2.Scxd3#
- 1...Bg7
- 2.Qg5#
- 1...Bf8
- 2.Qg5#
- 1...Ke5!
- 1...Rxe7
- 1.Bd8?
- 1...Bg5
- 2.Qxg5#
- 1...Rg3
- 2.Bc7#
- 2.Qe4#
- 1...Rf3
- 2.Bc7#
- 1...Rh3
- 2.Bc7#
- 1...Re4
- 2.Scxd3#
- 1...Re5
- 2.Scxd3#
- 1...Re6
- 2.Scxd3#
- 1...Re7
- 2.Scxd3#
- 1...Re8
- 2.Scxd3#
- 1...Bg7
- 2.Qg5#
- 1...Bf8
- 2.Qg5#
- 1...Ke5!
- 1...Bg5
- 1.Qe4+?
- 1...Kg3
- 2.Qh4#
- 1...Rxe4!
- 1...Kg3
- 1.Qxh6+?
- 1...Kg3
- 2.Qh4#
- 1...Kf5
- 2.Qg5#
- 1...Kg4!
- 1...Kg3
- 1.Bh4?
- Keys
- 1.Qh5!
- 1...Kg3
- 2.Qh4#
- 1...Bg5
- 2.Qxg5#
- 1...Rg3
- 2.Be5#
- 1...Rf3
- 2.Be5#
- 2.Qxf3#
- 1...Rh3
- 2.Be5#
- 1...Re4
- 2.Qf3#
- 1...Re5
- 2.Bxe5#
- 2.Qf3#
- 1...Re6
- 2.Qf3#
- 1...Re7
- 2.Qf3#
- 1...Re8
- 2.Qf3#
- 1...Bg7
- 2.Qg5#
- 1...Bf8
- 2.Qg5#
- 1...Kg3
- 1.Qh5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::S(C)
- R(c);N_GUARD::S(C),XP(b)
- B(e);N_GUARD::QAB1(E),XB(e)
- B(e);N_GUARD::QAB1(E)
- Tries
- Try
- B(D);
- Vars
- B(e);N_GUARD::QAB1(E),XB(e)
- R(c);N_GUARD::QAR1(E)
- B(e);N_GUARD::QAB1(E)
- Refutation
- K(d);S_FLIGHT
- Try
- B(D);CHECK
- Vars
- R(c);XB(D)::S(C),XP(b)
- Refutation
- K(d);S_FLIGHT,XB(D)
- Try
- B(D);
- Vars
- R(c);N_GUARD,XB(D)::S(C),XP(b)
- B(e);N_GUARD::QAB1(E),XB(e)
- R(c);N_GUARD::B(D)
- R(c);N_GUARD::S(C),XP(b)
- B(e);N_GUARD::QAB1(E)
- Refutation
- K(d);S_FLIGHT
- Try
- B(D);
- Vars
- B(e);N_GUARD::QAB1(E),XB(e)
- R(c);N_GUARD::B(D)
- R(c);N_GUARD::S(C),XP(b)
- B(e);N_GUARD::QAB1(E)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(E);CHECK
- Vars
- K(d);OGATE,S_FLIGHT::QAB1(E)
- Refutation
- R(c);XQ(E)
- Try
- Q(E);CHECK,XB(e)
- Vars
- K(d);S_FLIGHT::QAB1(E)
- K(d);P-FLIGHT::QAR1(E)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- Q(E);
- Vars
- K(d);S_FLIGHT::QAB1(E)
- B(e);N_GUARD::QAB1(E),XB(e)
- R(c);N_GUARD,SBLOCK::B(D)
- R(c);N_GUARD::B(D)
- R(c);N_GUARD::QAR1(E)
- B(e);N_GUARD::QAB1(E)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).