MESON Chess Problem Database
Problem Display
PID: 192646 (b5qr/2BpPpb1/1p1r1k2/5Bp1/2Q5/5RNN/4R3/2Kn4 w - - 0 1)
Andrade, Barry Jack da Costa
The Observer, 1939
(First published on Sun Apr 2 1939)
#2
9 + 11
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Qxd4#
- 1...Rc6
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bh7#
- 1...Rh5
- 2.Sxh5#
- 1...Bh6
- 2.Sh5#
- 1...Bf8
- 2.e8S#
- 1...Bd5
- 2.Qd4#
- 1...Rd4
- Tries
- 1.Be4+?
- 1...Ke5
- 2.Rf5#
- 1...Kxe7!
- 1...Ke5
- 1.Bxd6?
- threat
- 2.Be4#
- 2.Qd4#
- 1...Bxf3
- 2.Qd4#
- 1...Bh6
- 2.Sh5#
- 2.Qd4#
- 1...Bf8
- 2.Qd4#
- 2.e8S#
- 1...Qh7
- 2.Qd4#
- 1...Qc8
- 2.Be4#
- 1...Be4
- 2.Sxe4#
- 2.Bxe4#
- 2.Qd4#
- 1...Bd5
- 2.Qd4#
- 1...Se3
- 2.Qc3#
- 2.Qd4#
- 1...g4
- 2.Qd4#
- 1...Rh4!
- threat
- 1.Qc3+?
- 1...Rd4
- 2.Qxd4#
- 1...Sxc3!
- 1...Rd4
- 1.Qc5?
- threat
- 2.Qxd6#
- 2.Qe5#
- 1...Bh6
- 2.Sh5#
- 2.Qe5#
- 1...Bf8
- 2.Qe5#
- 2.e8S#
- 1...Be4
- 2.Qxd6#
- 1...Se3
- 2.Qxd6#
- 1...Rd2
- 2.Be5#
- 2.Qe5#
- 1...Rd3
- 2.Be5#
- 2.Qe5#
- 1...Rd4
- 2.Be5#
- 2.Qxd4#
- 2.Qe5#
- 1...Rd5
- 2.Se4#
- 1...Rc6
- 2.Se4#
- 2.Bb1#
- 2.Bc2#
- 2.Bd3#
- 2.Bh7#
- 2.Be5#
- 1...Re6
- 2.Be4#
- 1...Bd5
- 2.Qd4#
- 1...bxc5!
- threat
- 1.e8Q?
- threat
- 2.Be4#
- 2.Bd8#
- 2.Qe5#
- 2.Qe7#
- 1...Bxf3
- 2.Bd8#
- 2.Qe5#
- 2.Qe7#
- 1...Bh6
- 2.Sh5#
- 2.Qe5#
- 1...Bf8
- 2.Qe5#
- 1...Qh7
- 2.Bd8#
- 2.Qcxf7#
- 2.Qexf7#
- 2.Qe5#
- 2.Qe7#
- 1...Qf8
- 2.Be4#
- 2.Qe5#
- 1...Rd3
- 2.Be5#
- 2.Bd8#
- 2.Qe5#
- 2.Qe7#
- 1...Rd5
- 2.Se4#
- 2.Bd8#
- 2.Qe7#
- 1...Re6
- 2.Be4#
- 1...Rh4
- 2.Bd8#
- 2.Qe5#
- 2.Qe7#
- 1...Be4
- 2.Sxe4#
- 2.Bxe4#
- 2.Bd8#
- 1...Se3
- 2.Bd8#
- 1...g4
- 2.Bd8#
- 2.Qe5#
- 2.Qe7#
- 1...Qxe8!
- threat
- 1.Be4+?
- Keys
- 1.Qb4!
- threat
- 2.Qxd6#
- 1...Rc6+
- 2.Bc2#
- 1...Bh6
- 2.Sh5#
- 1...Bf8
- 2.e8S#
- 1...Rd2
- 2.Be5#
- 1...Rd3
- 2.Be5#
- 1...Rd4
- 2.Be5#
- 2.Qxd4#
- 1...Rd5
- 2.Se4#
- 1...Re6
- 2.Be4#
- 1...Bd5
- 2.Qd4#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- R(d);N_GUARD::QAB(F),XR(d)
- R(k);N_GUARD::S(D),XR(k)
- B(h);S_CUTR(k)::S(D)
- B(h);S_CUTQ(j)::P=S
- B(i);S_CUTR(d)::QAB(F)
- Tries
- Try
- B(G);CHECK
- Vars
- K(e);P_SPINR(d),S_FLIGHT::R1(C)
- Refutation
- K(e);S_FLIGHT,XP(I)
- Try
- B(H);XR(d)
- Threat
- DUALS(2)
- Vars
- B(i);XR(C)::QAB(F)
- Q(j);::QAB(F)
- Q(j);P_PINQ(F)::R(C)+B(G)
- B(i);::QAB(F)
- P(b);::QAB(F)
- Refutation
- R(k);
- Try
- Q(F);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAB(F),XR(d)
- Refutation
- S(a);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(i);::QAR2(F),XR(d)
- S(a);::QAR2(F),XR(d)
- R(d);S_CUTB(i)::S(D)
- R(d);SBLOCK::R(C)+B(G)
- B(i);S_CUTR(d)::QAB(F)
- Refutation
- P(c);XQ(F)
- Try
- P(I);
- Threat
- DUALS(4)
- Vars
- B(h);::QAB1(I)
- R(d);::R(C)+B(G)
- S(a);::B(H)
- Refutation
- Q(j);XQ(I)
- Try
- Actual
- Q(F);
- Threat
- QAR2(F),XR(d)
- Vars
- R(d);CHECK,S_CUTB(i)::R(C)+B(G)
- B(h);S_CUTR(k)::S(D)
- B(h);S_CUTQ(j)::P=S
- R(d);OGATE::B(H)
- R(d);S_CUTB(i)::S(D)
- R(d);SBLOCK::R(C)+B(G)
- B(i);S_CUTR(d)::QAB(F)
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