MESON Chess Problem Database
Problem Display
PID: 190854 (2B3Q1/5p1N/p3qPb1/5k2/2R5/1R1p1r2/KB2N3/8 w - - 0 1)
Andrade, Barry Jack da Costa
The Observer, 1938
(First published on Sun May 22 1938)
#2
9 + 7
| 98 | Manchester Guardian | 1950 |
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qd7
- 2.Bxd7#
- 1...Qxc8
- 2.Qxc8#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Rf4
- 2.Rxf4#
- 1...Bh5
- 2.Qg5#
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Qd7
- Tries
- 1.Ka1?
- 1...Qxc8
- 2.Qxc8#
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Qd7
- 2.Bxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Rf1+!
- 1...Qxc8
- 1.Kb1?
- 1...Qxc8
- 2.Qxc8#
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Qd7
- 2.Bxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Rf1+!
- 1...Qxc8
- 1.Ba1?
- 1...Qxc8
- 2.Qxc8#
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Qd7
- 2.Bxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rf1
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Rf2!
- 1...Qxc8
- 1.Bd7?
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Rf4
- 2.Rxf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Qxd7!
- 1...Bxh7
- 1.Qxf7?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...Qxc8
- 2.Qd5#
- 1...Bxh7
- 2.Qh5#
- 1...Qd7
- 2.Bxd7#
- 2.Qd5#
- 2.Qxd7#
- 1...Re3
- 2.Rf4#
- 1...Bh5
- 2.Bxe6#
- 2.Qxh5#
- 1...Bxf7!
- threat
- 1.Qg7?
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Qd7
- 2.Bxd7#
- 1...Rf4
- 2.Rxf4#
- 1...d2
- 2.Rxf3#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...a5
- 2.Rb5#
- 1...Qxc8!
- 1...Bxh7
- 1.Ka1?
- Keys
- 1.Ka3!
- 1...Qxc8
- 2.Qxc8#
- 1...Bxh7
- 2.Qg4#
- 1...dxe2
- 2.Rxf3#
- 1...Qd7
- 2.Bxd7#
- 1...Rf4
- 2.Rxf4#
- 1...Rf1
- 2.Sg3#
- 1...Rf2
- 2.Sg3#
- 1...Re3
- 2.Rf4#
- 1...Rg3
- 2.Sxg3#
- 2.Rf4#
- 1...Rh3
- 2.Rf4#
- 1...Bh5
- 2.Qg5#
- 1...d2
- 2.Rxf3#
- 1...a5
- 2.Rb5#
- 1...Qxc8
- 1.Ka3!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(e);OGATEB::B(H),XQ(e)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(I),XQ(e)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- R(b);N_GUARD::R1(E),XR(b)
- B(f);OGATE::QAR1(I)
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- P(a);OGATE::R(D),XR(b)
- P(d);N_GUARD::R(D)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(I),XQ(e)
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- Q(e);OGATEB::B(H),XQ(e)
- R(b);N_GUARD::R1(E),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(a);OGATE::R(D),XR(b)
- P(d);N_GUARD::R(D)
- Refutation
- R(b);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(I),XQ(e)
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- Q(e);OGATEB::B(H),XQ(e)
- R(b);N_GUARD::R1(E),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(a);OGATE::R(D),XR(b)
- P(d);N_GUARD::R(D)
- Refutation
- R(b);CHECK
- Try
- B(B);
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(I),XQ(e)
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- Q(e);OGATEB::B(H),XQ(e)
- R(b);N_GUARD::R1(E),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(a);OGATE::R(D),XR(b)
- P(d);N_GUARD::R(D)
- Refutation
- R(b);P_PINS(C)
- Try
- B(H);
- Vars
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- R(b);N_GUARD::R1(E),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(a);OGATE::R(D),XR(b)
- P(d);N_GUARD::R(D)
- Refutation
- Q(e);N_SPINQ(e),XB(H)
- Try
- Q(I);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAR2(I)
- B(f);OGATE,XS(G)::QAR2(I)
- R(b);N_GUARD::R1(E)
- Refutation
- B(f);XQ(I)
- Try
- Q(I);
- Vars
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,XS(C)::R(D),XR(b)
- Q(e);OGATEB::B(H),XQ(e)
- R(b);N_GUARD::R1(E),XR(b)
- P(a);OGATE::R(D),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(d);N_GUARD::R(D)
- Refutation
- Q(e);N_SPINQ(e),XB(H)
- Try
- Actual
- K(A);P-FLIGHT
- Vars
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(I),XQ(e)
- B(f);OGATE,XS(G)::QAB1(I)
- P(a);OGATE,P_PINR(D),XS(C)::R(D),XR(b)
- Q(e);OGATEB::B(H),XQ(e)
- R(b);N_GUARD::R1(E),XR(b)
- R(b);N_GUARD::S(C)
- R(b);N_GUARD::R1(E)
- B(f);OGATE::QAR1(I)
- P(a);OGATE,P_PINR(D)::R(D),XR(b)
- P(d);N_GUARD::R(D)
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