MESON Chess Problem Database
Problem Display
PID: 203692 (8/3p1Qp1/3ppbN1/p5p1/NpB1k1P1/1P2Pp2/5K2/8 w - - 0 1)
Clark, Cecil Henry Douglas
The Observer, 1951
(First published on Sun Nov 4 1951)
#2
8 + 10
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Qd5#
- 1...Ba1
- Tries
- 1.Sb2?
- 1...Bxb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Bd3#
- 1...e5
- 2.Bd3#
- 2.Bd5#
- 2.Qd5#
- 1...a4!
- 1...Bxb2
- 1.Sc3+?
- 1...Bxc3
- 2.Qxf3#
- 1...bxc3!
- 1...Bxc3
- 1.Bf1?
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Qc4#
- 1...Kd5!
- 1...Ba1
- 1.Be2?
- 1...Kd5
- 2.Bxf3#
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Qc4#
- 1...fxe2!
- 1...Kd5
- 1.Bb5?
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Qc4#
- 1...Kd5!
- 1...Ba1
- 1.Qxe6+?
- 1...Be5
- 2.Qd5#
- 2.Qf5#
- 1...dxe6!
- 1...Be5
- 1.Qxf6?
- threat
- 2.Qd4#
- 2.Qxf3#
- 1...e5
- 2.Qxf3#
- 2.Qf5#
- 1...gxf6!
- threat
- 1.Qf8?
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5!
- 1...Ba1
- 1.Sb2?
- Keys
- 1.Ba6!
- 1...Kd5
- 2.Bb7#
- 1...Ba1
- 2.Qxf3#
- 1...Bb2
- 2.Qxf3#
- 1...Bc3
- 2.Qxf3#
- 1...Bd4
- 2.Qxf3#
- 1...Be5
- 2.Qxf3#
- 1...Be7
- 2.Qxf3#
- 1...Bd8
- 2.Qxf3#
- 1...d5
- 2.Sc5#
- 1...e5
- 2.Qc4#
- 1...Kd5
- 1.Ba6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD::S(D)
- P(g);OGATE::QAB1(H)
- Tries
- Try
- S(D);
- Vars
- B(h);OGATE,XS(D)::QAB1(H),XP(a)
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);SBLOCK::B(E)
- Refutation
- P(d);
- Try
- S(D);CHECK
- Vars
- B(h);OGATE,XS(D)::QAB1(H),XP(a)
- Refutation
- P(b);XS(D)
- Try
- B(E);
- Vars
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD,SBLOCK::S(D)
- P(g);OGATE::QAR2(H)
- Refutation
- K(c);P_SPINP(g),S_FLIGHT
- Try
- B(E);
- Vars
- K(c);P_SPINP(g),S_FLIGHT::B(E),XP(a)
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD,SBLOCK::S(D)
- P(g);OGATE::QAR2(H)
- Refutation
- P(a);XB(E)
- Try
- B(E);
- Vars
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD,SBLOCK::S(D)
- P(g);OGATE::QAR2(H)
- Refutation
- K(c);P_SPINP(g),S_FLIGHT
- Try
- Q(H);CHECK,XP(g)
- Refutation
- P(i);XQ(H)
- Try
- Q(H);XB(h)
- Threat
- DUALS(2)
- Refutation
- P(j);XQ(H)
- Try
- Q(H);
- Vars
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD::S(D)
- Refutation
- P(g);
- Try
- Actual
- B(E);
- Vars
- K(c);P_SPINP(g),S_FLIGHT::B(E)
- B(h);OGATE::QAB1(H),XP(a)
- B(h);OGATE,P_PINP(C)::QAB1(H),XP(a)
- P(f);N_GUARD,SBLOCK::S(D)
- P(g);OGATE::QAR2(H)
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