MESON Chess Problem Database
Problem Display
PID: 135997 (rQq2RB1/1PP1k1PR/b1Pp4/1NnprpPp/4pn1N/B7/1b6/3K4 w - - 0 1)
Mendes de Moraes Filho, Feliciano
2nd Comm., BCF 095. Ty., 1960-1961
#2
13 + 13
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Re8#
- 1...Qxb7
- 2.Re8#
- 1...Qxc7
- 2.Re8#
- 1...Qd8
- 2.cxd8Q#
- 2.cxd8B#
- 1...Qe8
- 2.Rxe8#
- 1...Qxf8
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Re6
- 2.Sxf5#
- 1...Bxb5
- 2.bxc8S#
- 1...Se2
- 2.Sg6#
- 1...Sg2
- 2.Sg6#
- 1...Sfd3
- 2.Sg6#
- 1...Sh3
- 2.Sg6#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sb3
- 2.Bxd6#
- 1...Scd3
- 2.Bxd6#
- 1...Sa4
- 2.Bxd6#
- 1...Sce6
- 2.Bxd6#
- 1...Sd7
- 2.Bxd6#
- 1...Qe6
- Tries
- 1.Sxf5+?
- 1...Qxf5
- 2.Re8#
- 1...Rxf5!
- 1...Qxf5
- 1.Bxd5?
- threat
- 2.g8Q#
- 2.g8R#
- 1...Qxb7
- 2.Rf7#
- 2.Re8#
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qxc7
- 2.Rf7#
- 2.Re8#
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qxb8
- 2.g8Q#
- 2.g8R#
- 1...Rxb8
- 2.g8Q#
- 2.g8R#
- 1...Bxa3
- 2.g8Q#
- 2.g8R#
- 1...Bxb5
- 2.bxc8S#
- 2.g8Q#
- 2.g8R#
- 1...Bxb7
- 2.g8Q#
- 2.g8R#
- 1...Sxb7
- 2.g8Q#
- 2.g8R#
- 1...Qd7
- 2.Rf7#
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qd8
- 2.cxd8Q#
- 2.cxd8B#
- 2.g8Q#
- 2.g8R#
- 1...Qe8
- 2.Rxe8#
- 1...Re6
- 2.Sxf5#
- 1...Ra7
- 2.g8Q#
- 2.g8R#
- 1...Ba1
- 2.g8Q#
- 2.g8R#
- 1...Bc1
- 2.g8Q#
- 2.g8R#
- 1...Bc3
- 2.g8Q#
- 2.g8R#
- 1...Bd4
- 2.g8Q#
- 2.g8R#
- 1...Se2
- 2.Sg6#
- 2.g8Q#
- 2.g8R#
- 1...Sg2
- 2.Sg6#
- 2.g8Q#
- 2.g8R#
- 1...Sfd3
- 2.Sg6#
- 2.g8Q#
- 2.g8R#
- 1...Sh3
- 2.Sg6#
- 2.g8Q#
- 2.g8R#
- 1...Sfe6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 2.g8Q#
- 2.g8R#
- 1...Sb3
- 2.Bxd6#
- 2.g8Q#
- 2.g8R#
- 1...Scd3
- 2.Bxd6#
- 2.g8Q#
- 2.g8R#
- 1...Sa4
- 2.Bxd6#
- 2.g8Q#
- 2.g8R#
- 1...Sce6
- 2.Bxd6#
- 1...Sd7
- 2.Bxd6#
- 2.g8Q#
- 2.g8R#
- 1...e3
- 2.g8Q#
- 2.g8R#
- 1...Rxd5+!
- threat
- 1.Rf7+?
- 1...Ke8
- 2.Sxd6#
- 1...Ke6!
- 1...Ke8
- 1.Qxc8?
- threat
- 2.Rf7#
- 2.Re8#
- 1...Sd7
- 2.Bxd6#
- 2.Re8#
- 2.Qxd7#
- 1...Rxc8!
- threat
- 1.bxc8Q?
- threat
- 2.Rf7#
- 2.Re8#
- 2.Qd8#
- 2.Qe8#
- 1...Rxb8
- 2.Rf7#
- 2.Re8#
- 1...Sfe6
- 2.Sg6#
- 2.Rf7#
- 2.Re8#
- 2.Qe8#
- 1...Sce6
- 2.Bxd6#
- 2.Rf7#
- 2.Re8#
- 2.Qd7#
- 2.Qe8#
- 1...Sb7
- 2.Rf7#
- 2.Re8#
- 2.Qd7#
- 2.Qe8#
- 1...Sd7
- 2.Bxd6#
- 2.Re8#
- 2.Qxd7#
- 2.Qd8#
- 2.Qe8#
- 1...Bxc8!
- threat
- 1.bxc8R?
- threat
- 2.Rce8#
- 2.Rfe8#
- 1...Rxb8
- 2.Rfe8#
- 1...Bxc8!
- threat
- 1.Sxf5+?
- Keys
- 1.Be6!
- threat
- 2.g8Q#
- 1...Kxe6
- 2.g8Q#
- 2.g8B#
- 1...Qxb7
- 2.Re8#
- 2.g8Q#
- 2.g8B#
- 1...Qxc7
- 2.Re8#
- 2.g8Q#
- 2.g8B#
- 1...Qxf8
- 2.gxf8S#
- 1...Rxe6
- 2.Sxf5#
- 1...Sfxe6
- 2.Sg6#
- 1...Scxe6
- 2.Bxd6#
- 1...Qd7
- 2.g8Q#
- 2.g8B#
- 1...Qe8
- 2.Rxe8#
- threat
- 1.Be6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(m);N_GUARD::R1(L)
- Q(m);N_GUARD,XP(G)::R1(L)
- Q(m);N_GUARD,XP(H)::R1(L)
- Q(m);OGATE::PXQ(m)=Q
- Q(m);N_GUARD::R1(L),XQ(m)
- R(f);N_GUARD,S_CUTQ(m)::S(C),XP(g)
- B(i);N_GUARD,XS(D)::PXQ(m)=S
- S(c);N_GUARD::S(C)
- S(c);N_GUARD::S(C),XS(c)
- S(d);OGATE,P_SPINP(j)::B(B),XP(j)
- Tries
- Try
- S(C);CHECK,XP(g)
- Vars
- Q(m);XS(C)::R1(L)
- Refutation
- R(f);XS(C)
- Try
- B(M);XP(e)
- Threat
- P=Q
- Vars
- Q(m);XQ(K)::P=Q
- R(l);XQ(K)::P=Q
- B(a);XB(B)::P=Q
- B(i);XP(G)::P=Q
- S(d);P_SPINP(j),XP(G)::P=Q
- Q(m);N_GUARD::R1(L),XQ(m)
- R(f);N_GUARD,S_CUTQ(m)::S(C),XP(g)
- R(l);::P=Q
- B(a);::P=Q
- S(c);N_GUARD::S(C)
- S(d);OGATE,P_SPINP(j)::B(B),XP(j)
- P(b);::P=Q
- Refutation
- R(f);CHECK,XB(M)
- Try
- R(L);CHECK
- Vars
- K(k);P-FLIGHT,P_SPINQ(m)::S(D),XP(j)
- Refutation
- K(k);P-FLIGHT
- Try
- Q(K);XQ(m)
- Threat
- DUALS(2)
- Refutation
- R(l);XQ(K)
- Try
- P(G);XQ(m)
- Threat
- DUALS(4)
- Refutation
- B(i);XQ(G)
- Try
- P(G);XQ(m)
- Threat
- DUALS(2)
- Vars
- R(l);XQ(K)::R1(L)
- Refutation
- B(i);XR(G)
- Try
- Actual
- B(M);
- Threat
- P=Q
- Vars
- K(k);P-FLIGHT,XB(M)::P=Q
- Q(m);OGATE,XR(L)::PXQ(m)=S
- R(f);N_GUARD,SBLOCK,XB(M)::S(C),XP(g)
- S(c);N_GUARD,SBLOCK,XB(M)::S(C)
- S(d);OGATE,P_SPINP(j),SBLOCK,XB(M)::B(B),XP(j)
- Q(m);::P=Q
- Q(m);N_GUARD::R1(L),XQ(m)
Developed and maintained by Brian Stephenson.
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