MESON Chess Problem Database
Problem Display
PID: 202936 (8/1N1p1Kp1/1p1B1b2/1P1k1ppN/8/2pPQ3/2P5/8 w - - 0 1)
Beade, JB
The Observer, 1951
(First published on Sun May 13 1951)
#2
8 + 8
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Qf3#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...Bd4
- Tries
- 1.Kg6?
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...Bd4!
- 1...Be5
- 1.Ke8?
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...Bd4!
- 1...Be5
- 1.Kg8?
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...Bd4!
- 1...Be5
- 1.Bh2?
- 1...Bd4
- 2.Qf3#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...d6!
- 1...Bd4
- 1.Bg3?
- 1...Bd4
- 2.Qf3#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...d6!
- 1...Bd4
- 1.Bc7?
- 1...Bd4
- 2.Qf3#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...d6!
- 1...Bd4
- 1.Bb8?
- 1...Bd4
- 2.Qf3#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...g6
- 2.Sxf6#
- 1...d6!
- 1...Bd4
- 1.Qf4?
- threat
- 2.Qc4#
- 1...Bd4
- 2.Qf3#
- 1...gxf4!
- threat
- 1.Kg6?
- Keys
- 1.Bc5!
- 1...bxc5
- 2.Qxc5#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Qf3#
- 1...Be7
- 2.Qd4#
- 1...Bd8
- 2.Qd4#
- 1...f4
- 2.Qe4#
- 1...g4
- 2.Sf4#
- 1...d6
- 2.Qe6#
- 1...g6
- 2.Sxf6#
- 1...bxc5
- 1.Bc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- Refutation
- B(f);
- Try
- K(H);S_FLIGHT
- Vars
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- B(f);
- Try
- K(H);S_FLIGHT
- Vars
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- B(f);
- Try
- B(F);
- Vars
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- P(g);
- Try
- B(F);
- Vars
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- P(g);
- Try
- B(F);
- Vars
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- P(g);
- Try
- B(F);
- Vars
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(h);N_GUARD::S(E),XB(f)
- Refutation
- P(g);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- B(f);SBLOCK::QAB(C)
- Refutation
- P(d);XQ(C)
- Try
- Actual
- B(F);
- Vars
- P(e);OGATE,XB(F)::QAR1(C),XP(e)
- B(f);N_GUARD::QAR1(C),XB(f)
- B(f);SBLOCK::QAB(C)
- B(f);N_GUARD::QAR1(C)
- P(c);N_GUARD::QAB1(C)
- P(d);N_GUARD::S(E)
- P(g);N_GUARD::QAB1(C)
- P(h);N_GUARD::S(E),XB(f)
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