MESON Chess Problem Database
Problem Display
PID: 120 (4RKB1/5n2/2N5/3NPk1b/2R5/3p2n1/3B4/2Q5 w - - 0 1)
Andrade, Barry Jack da Costa
Watney, Charles Gold
The Observer, 1930
(First published on Sun Oct 5 1930)
#2
9 + 5
| 887 | Mate in Two Moves | 1931 |
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Kg6
- 2.Sde7#
- 2.Sce7#
- 1...Bd1
- 2.Bh7#
- 1...Be2
- 2.Bh7#
- 1...Bf3
- 2.Bh7#
- 1...Bg4
- 2.Bh7#
- 1...Sxe5
- 2.Sce7#
- 1...Sg5
- 2.Sde7#
- 1...Sd6
- 2.Sde7#
- 1...Sh6
- 2.Sde7#
- 1...Sd8
- 2.Sde7#
- 1...Sh8
- 2.Sde7#
- 1...Kg6
- Tries
- 1.Sd4+?
- 1...Ke4
- 2.Sc3#
- 2.Sf6#
- 1...Kg6
- 2.Se7#
- 2.Re6#
- 1...Kg4!
- 1...Ke4
- 1.Rf4+?
- 1...Kg6
- 2.Rf6#
- 1...Kg5!
- 1...Kg6
- 1.Qe1?
- 1...Kg6
- 2.Sde7#
- 2.Sce7#
- 1...Sxe5
- 2.Sce7#
- 1...Se4
- 2.Qxe4#
- 1...Bg6
- 2.Qf2#
- 1...Bd1
- 2.Bh7#
- 1...Be2
- 2.Bh7#
- 1...Bf3
- 2.Bh7#
- 1...Bg4
- 2.Bh7#
- 1...Sf1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sg5
- 2.Sde7#
- 2.Sce7#
- 1...Sd6
- 2.Sde7#
- 2.Sce7#
- 1...Sh6
- 2.Sde7#
- 2.Sce7#
- 1...Sd8
- 2.Sde7#
- 2.Sce7#
- 1...Sh8
- 2.Sde7#
- 2.Sce7#
- 1...Se2!
- 1...Kg6
- 1.Qf1+?
- 1...Kg6
- 2.Sde7#
- 2.Sce7#
- 2.Re6#
- 2.Qf6#
- 2.Qxf7#
- 1...Bf3
- 2.Bh7#
- 1...Sxf1!
- 1...Kg6
- 1.Qh1?
- 1...Kg6
- 2.Sde7#
- 2.Sce7#
- 1...Sxe5
- 2.Sce7#
- 1...Se4
- 2.Qxe4#
- 1...Bg6
- 2.Qf3#
- 2.Qh3#
- 1...Bd1
- 2.Bh7#
- 2.Qh7#
- 1...Be2
- 2.Bh7#
- 2.Qh7#
- 1...Bf3
- 2.Bh7#
- 2.Qh7#
- 1...Bg4
- 2.Bh7#
- 2.Qh7#
- 1...Sf1
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sg5
- 2.Sde7#
- 1...Sd6
- 2.Sde7#
- 1...Sh6
- 2.Sde7#
- 1...Sd8
- 2.Sde7#
- 1...Sh8
- 2.Sde7#
- 1...Sxh1!
- 1...Kg6
- 1.Sd4+?
- Keys
- 1.Qg1!
- 1...Kg6
- 2.Sde7#
- 2.Sce7#
- 1...Sxe5
- 2.Sce7#
- 1...Bg6
- 2.Qf2#
- 1...Bd1
- 2.Bh7#
- 1...Be2
- 2.Bh7#
- 1...Bf3
- 2.Bh7#
- 1...Bg4
- 2.Bh7#
- 1...Sf1
- 2.Rf4#
- 1...Sh1
- 2.Se3#
- 2.Rf4#
- 1...Se2
- 2.Se3#
- 1...Se4
- 2.Sd4#
- 1...Sg5
- 2.Sde7#
- 1...Sd6
- 2.Sde7#
- 1...Sh6
- 2.Sde7#
- 1...Sd8
- 2.Sde7#
- 1...Sh8
- 2.Sde7#
- 1...Kg6
- 1.Qg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD::B(I)
- S(e);SBLOCK,XP(E)::S(F)
- S(e);::S(D)
- Tries
- Try
- S(F);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- R(C);CHECK
- Vars
- K(c);OGATE,S_FLIGHT::R1(C)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);
- Vars
- S(e);XP(E)::S(F)
- S(b);N_GUARD::QAB1(A),XS(b)
- B(d);N_GUARD,SBLOCK::QAR(A)
- B(d);N_GUARD::B(I)
- S(b);N_GUARD::QAB1(A)
- Refutation
- S(b);
- Try
- Q(A);CHECK
- Vars
- B(d);P_SPINB(d)::B(I)
- Refutation
- S(b);XQ(A)
- Try
- Q(A);
- Vars
- S(e);SBLOCK,XP(E)::S(F)
- S(b);N_GUARD::QAB1(A),XS(b)
- S(b);N_GUARD::QAB1(A)
- S(e);::S(D)
- Refutation
- S(b);XQ(A)
- Try
- Actual
- Q(A);
- Vars
- S(e);SBLOCK,XP(E)::S(F)
- B(d);N_GUARD,SBLOCK::QAR(A)
- B(d);N_GUARD::B(I)
- S(b);::R1(C)
- S(b);::S(D)
- S(b);SBLOCK::S(F)
- S(e);::S(D)
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