MESON Chess Problem Database
Problem Display
PID: 269503 (2KN4/2pp4/1pr2p1b/2P1RQ2/nB1k2bR/1P1p4/2P2P2/6Nq w - - 0 1)
Andrade, Barry Jack da Costa
British Chess Magazine, 1934
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Sxf3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qd5
- 2.Rxd5#
- 1...Qxg1
- 2.Re4#
- 2.Rd5#
- 2.Qe4#
- 1...Qh2
- 2.Sf3#
- 2.Re4#
- 2.Rd5#
- 2.Qe4#
- 1...Qh3
- 2.Re4#
- 2.Rd5#
- 2.Qe4#
- 1...Qxh4
- 2.Re4#
- 2.Rd5#
- 2.Qe4#
- 1...Be3
- 2.fxe3#
- 1...Sb2
- 2.c3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 1...d2
- 2.Se2#
- 1...fxe5
- 2.Qxd3#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Se6#
- 1...Qf3
- Tries
- 1.Rxh1?
- threat
- 2.Re4#
- 2.Rd5#
- 2.Qe4#
- 1...Rxc5
- 2.Re4#
- 2.Qe4#
- 1...Bxf5
- 2.Sf3#
- 1...Sxc5
- 2.Rd5#
- 2.c3#
- 1...dxc2
- 2.Rd5#
- 2.Qe4#
- 1...fxe5
- 2.Qxd3#
- 1...Rd6
- 2.Re4#
- 2.Qe4#
- 1...Re6
- 2.Rd5#
- 2.Qe4#
- 1...Bf3
- 2.Sxf3#
- 1...d5
- 2.Sxc6#
- 2.Rxd5#
- 1...d6
- 2.Sxc6#
- 2.Se6#
- 2.Re4#
- 2.Rd5#
- 1...Sc3!
- threat
- 1.Rxg4+?
- 1...Qe4
- 2.Sf3#
- 2.Rgxe4#
- 2.Rexe4#
- 2.Rd5#
- 2.Qxe4#
- 1...Bf4!
- 1...Qe4
- 1.Re2?
- threat
- 2.Qxd3#
- 1...Sxc5
- 2.c3#
- 1...dxe2
- 2.Sxe2#
- 1...Qf3
- 2.Sxf3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qh3
- 2.Re4#
- 2.Qe4#
- 1...Be3
- 2.fxe3#
- 1...Sb2
- 2.c3#
- 1...d2
- 2.Qd3#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Se6#
- 1...dxc2!
- threat
- 1.Re3?
- threat
- 2.Rxd3#
- 2.Qxd3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 2.Rd3#
- 2.Qd3#
- 1...Qf3
- 2.Sxf3#
- 2.Qxd3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qh3
- 2.Re4#
- 2.Qxd3#
- 2.Qe4#
- 1...Sb2
- 2.c3#
- 1...d2
- 2.Se2#
- 2.Rd3#
- 2.Qd3#
- 1...d5
- 2.Sxc6#
- 2.Rxd3#
- 1...d6
- 2.Se6#
- 2.Rxd3#
- 1...Bxe3!
- threat
- 1.Re7?
- threat
- 2.Qxd3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 1...Qf3
- 2.Sxf3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qh3
- 2.Re4#
- 2.Qe4#
- 1...Sb2
- 2.c3#
- 1...d2
- 2.Se2#
- 2.Qd3#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Se6#
- 1...Re6!
- threat
- 1.Re8?
- threat
- 2.Qxd3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 1...Qf3
- 2.Sxf3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qh3
- 2.Re4#
- 2.Qe4#
- 1...Sb2
- 2.c3#
- 1...d2
- 2.Se2#
- 2.Qd3#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Se6#
- 1...Re6!
- threat
- 1.Qf4+?
- 1...Qe4
- 2.Qxe4#
- 1...Bxf4!
- 1...Qe4
- 1.f3?
- threat
- 2.Re4#
- 2.Qe4#
- 1...Qxf3
- 2.Sxf3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 2.Qe4#
- 1...fxe5
- 2.Qxd3#
- 2.Qe4#
- 1...Re6
- 2.Qe4#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Sxc6#
- 2.Se6#
- 2.Re4#
- 1...Sc3!
- threat
- 1.Rxh1?
- Keys
- 1.Re1!
- threat
- 2.Qxd3#
- 1...Sxc5
- 2.c3#
- 1...dxc2
- 2.Se2#
- 1...Qf3
- 2.Sxf3#
- 1...Qe4
- 2.Rxe4#
- 2.Qxe4#
- 1...Qh3
- 2.Re4#
- 2.Qe4#
- 1...Be3
- 2.fxe3#
- 1...Sb2
- 2.c3#
- 1...d2
- 2.Se2#
- 2.Qd3#
- 1...d5
- 2.Sxc6#
- 1...d6
- 2.Se6#
- threat
- 1.Re1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::S(A),XQ(a)
- Q(a);N_GUARD::R1(H),XQ(a)
- B(i);OGATE::P(C),XB(i)
- S(c);N_GUARD::P(B)
- S(c);N_GUARD,XP(G)::P(B)
- P(b);N_GUARD,XP(B)::S(A)
- P(b);N_GUARD::S(A)
- P(h);SBLOCK,XR(H)::QAR1(I),XP(b)
- P(k);N_GUARD,P_PINQ(I),S_CUTQ(a)::S(K),XR(g)
- P(k);N_GUARD,P_PINQ(I),S_CUTR(g)::S(K)
- Tries
- Try
- R(F);N_PINB(e),XQ(a)
- Threat
- DUALS(3)
- Vars
- B(e);N_GUARD,XQ(I)::S(A)
- P(h);SBLOCK,XR(H)::QAR1(I),XP(b)
- B(e);N_GUARD::S(A),XB(e)
- Refutation
- S(c);
- Try
- R(F);CHECK,XB(e)
- Refutation
- B(i);P_SPINB(i)
- Try
- R(H);
- Threat
- QAR1(I),XP(b)
- Vars
- S(c);N_GUARD,XP(G)::P(B)
- P(b);XR(H)::S(A),XP(b)
- Q(a);N_GUARD::S(A),XQ(a)
- B(i);OGATE::P(C),XB(i)
- S(c);N_GUARD::P(B)
- P(b);::QAR1(I)
- P(k);N_GUARD,P_PINQ(I),S_CUTQ(a)::S(K),XR(g)
- P(k);N_GUARD,P_PINQ(I),S_CUTR(g)::S(K)
- Refutation
- P(b);XP(B)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XP(G)::P(B)
- S(c);N_GUARD::P(B)
- Refutation
- B(i);XR(H)
- Try
- R(H);
- Threat
- QAR1(I),XP(b)
- Vars
- S(c);N_GUARD,XP(G)::P(B)
- P(b);N_GUARD,XP(B)::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- S(c);N_GUARD::P(B)
- P(k);N_GUARD,P_PINQ(I),S_CUTQ(a)::S(K),XR(g)
- P(k);N_GUARD,P_PINQ(I),S_CUTR(g)::S(K)
- Refutation
- R(g);
- Try
- R(H);
- Threat
- QAR1(I),XP(b)
- Vars
- S(c);N_GUARD,XP(G)::P(B)
- P(b);N_GUARD,XP(B)::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- S(c);N_GUARD::P(B)
- P(k);N_GUARD,P_PINQ(I),S_CUTQ(a)::S(K),XR(g)
- P(k);N_GUARD,P_PINQ(I),S_CUTR(g)::S(K)
- Refutation
- R(g);
- Try
- Q(I);CHECK,N_PINB(e)
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAR1(I),XQ(a)
- Refutation
- B(i);XQ(I)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(C)::S(A),XQ(a)
- S(c);N_GUARD,XP(G)::P(B)
- R(g);::QAR1(I)
- P(k);N_GUARD,P_PINQ(I)::S(K),XR(g)
- Refutation
- S(c);
- Try
- Actual
- R(H);
- Threat
- QAR1(I),XP(b)
- Vars
- S(c);N_GUARD,XP(G)::P(B)
- P(b);N_GUARD,XP(B)::S(A)
- Q(a);N_GUARD::S(A),XQ(a)
- B(i);OGATE::P(C),XB(i)
- S(c);N_GUARD::P(B)
- P(k);N_GUARD,P_PINQ(I),S_CUTQ(a)::S(K),XR(g)
- P(k);N_GUARD,P_PINQ(I),S_CUTR(g)::S(K)
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