MESON Chess Problem Database
Problem Display
PID: 54609 (n1NB4/1K1Pp1b1/4pq2/1N1k2rb/1Pp2PB1/2pPR3/1P6/1Q1r4 w - - 0 1)
Figueiredo, Jose Miguel Dias
Sonnenfeld, Felix Alexander
4th HM., Arguelles JT, 1963
#2
12 + 11
| 1077 | Boletim da UBP | 1989 |
| 5309 | O Mosqueteiro do Rei | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 1...Qe5
- 2.Sxe7#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Qf5
- 2.Sxe7#
- 1...Qg6
- 2.Sxe7#
- 1...Qh6
- 2.Sxe7#
- 1...Qf8
- 2.Bxe6#
- 1...Rh1
- 2.Qxh1#
- 1...Rxd3
- 2.Qh1#
- 1...Bf7
- 2.Bf3#
- 1...Be8
- 2.Bf3#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 1...cxd3
- 2.Qa2#
- 1...Qd4
- Tries
- 1.Sxc3+?
- 1...Kd4
- 2.Re4#
- 1...Qxc3!
- 1...Kd4
- 1.Sc7+?
- 1...Kd4
- 2.Re4#
- 1...Sxc7!
- 1...Kd4
- 1.Ba5?
- threat
- 2.d8Q#
- 2.d8R#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Rxb1
- 2.d8Q#
- 2.d8R#
- 1...Rxd3
- 2.Qh1#
- 2.d8Q#
- 2.d8R#
- 1...Rxg4
- 2.d8Q#
- 2.d8R#
- 1...Bxg4
- 2.d8Q#
- 2.d8R#
- 1...cxb2
- 2.d8Q#
- 2.d8R#
- 1...cxd3
- 2.Qa2#
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 2.d8Q#
- 2.d8R#
- 1...Qe5
- 2.Sxe7#
- 1...Qf5
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qg6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qh6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qf7
- 2.d8Q#
- 2.d8R#
- 1...Qf8
- 2.Bxe6#
- 1...Rc1
- 2.d8Q#
- 2.d8R#
- 1...Re1
- 2.d8Q#
- 2.d8R#
- 1...Rf1
- 2.d8Q#
- 2.d8R#
- 1...Rg1
- 2.d8Q#
- 2.d8R#
- 1...Rh1
- 2.Qxh1#
- 2.d8Q#
- 2.d8R#
- 1...Rd2
- 2.d8Q#
- 2.d8R#
- 1...Re5
- 2.d8Q#
- 2.d8R#
- 1...Rf5
- 2.d8Q#
- 2.d8R#
- 1...Rg6
- 2.d8Q#
- 2.d8R#
- 1...Bg6
- 2.d8Q#
- 2.d8R#
- 1...Bf7
- 2.Bf3#
- 2.d8Q#
- 2.d8R#
- 1...Be8
- 2.Bf3#
- 1...Bh6
- 2.d8Q#
- 2.d8R#
- 1...Bf8
- 2.d8Q#
- 2.d8R#
- 1...Bh8
- 2.d8Q#
- 2.d8R#
- 1...Sb6
- 2.Sxb6#
- 1...Sc7
- 2.Sb6#
- 2.d8Q#
- 2.d8R#
- 1...c2
- 2.d8Q#
- 2.d8R#
- 1...e5!
- threat
- 1.Bc7?
- threat
- 2.d8Q#
- 2.d8R#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Rxb1
- 2.d8Q#
- 2.d8R#
- 1...Rxd3
- 2.Qh1#
- 2.d8Q#
- 2.d8R#
- 1...Rxg4
- 2.d8Q#
- 2.d8R#
- 1...Bxg4
- 2.d8Q#
- 2.d8R#
- 1...Sxc7
- 2.Sb6#
- 2.d8Q#
- 2.d8R#
- 1...cxb2
- 2.d8Q#
- 2.d8R#
- 1...cxd3
- 2.Qa2#
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 2.d8Q#
- 2.d8R#
- 1...Qe5
- 2.Sxe7#
- 1...Qf5
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qg6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qh6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qf7
- 2.d8Q#
- 2.d8R#
- 1...Qf8
- 2.Bxe6#
- 1...Rc1
- 2.d8Q#
- 2.d8R#
- 1...Re1
- 2.d8Q#
- 2.d8R#
- 1...Rf1
- 2.d8Q#
- 2.d8R#
- 1...Rg1
- 2.d8Q#
- 2.d8R#
- 1...Rh1
- 2.Qxh1#
- 2.d8Q#
- 2.d8R#
- 1...Rd2
- 2.d8Q#
- 2.d8R#
- 1...Re5
- 2.d8Q#
- 2.d8R#
- 1...Rf5
- 2.d8Q#
- 2.d8R#
- 1...Rg6
- 2.d8Q#
- 2.d8R#
- 1...Bg6
- 2.d8Q#
- 2.d8R#
- 1...Bf7
- 2.Bf3#
- 2.d8Q#
- 2.d8R#
- 1...Be8
- 2.Bf3#
- 1...Bh6
- 2.d8Q#
- 2.d8R#
- 1...Bf8
- 2.d8Q#
- 2.d8R#
- 1...Bh8
- 2.d8Q#
- 2.d8R#
- 1...Sb6
- 2.Sxb6#
- 1...c2
- 2.d8Q#
- 2.d8R#
- 1...e5!
- threat
- 1.Re5+?
- 1...Qxe5
- 2.Sxe7#
- 1...Rxe5!
- 1...Qxe5
- 1.Qa2?
- threat
- 2.Qxc4#
- 2.dxc4#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 1...Sb6
- 2.Sxb6#
- 1...Rxd3!
- threat
- 1.b3?
- threat
- 2.bxc4#
- 2.dxc4#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Rxd3
- 2.Qh1#
- 1...cxb3
- 2.Qxb3#
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 1...Sb6
- 2.Sxb6#
- 1...cxd3!
- threat
- 1.Sxc3+?
- Keys
- 1.Bb6!
- threat
- 2.d8Q#
- 2.d8R#
- 1...Qxf4
- 2.Sxe7#
- 2.Bxe6#
- 1...Rxb1
- 2.d8Q#
- 2.d8R#
- 1...Rxd3
- 2.Qh1#
- 2.d8Q#
- 2.d8R#
- 1...Rxg4
- 2.d8Q#
- 2.d8R#
- 1...Bxg4
- 2.d8Q#
- 2.d8R#
- 1...Sxb6
- 2.Sxb6#
- 1...cxb2
- 2.d8Q#
- 2.d8R#
- 1...cxd3
- 2.Qa2#
- 1...Qd4
- 2.Sxe7#
- 2.Bxe6#
- 2.d8Q#
- 2.d8R#
- 1...Qe5
- 2.Sxe7#
- 1...Qf5
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qg6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qh6
- 2.Sxe7#
- 2.d8Q#
- 2.d8R#
- 1...Qf7
- 2.d8Q#
- 2.d8R#
- 1...Qf8
- 2.Bxe6#
- 1...Rc1
- 2.d8Q#
- 2.d8R#
- 1...Re1
- 2.d8Q#
- 2.d8R#
- 1...Rf1
- 2.d8Q#
- 2.d8R#
- 1...Rg1
- 2.d8Q#
- 2.d8R#
- 1...Rh1
- 2.Qxh1#
- 2.d8Q#
- 2.d8R#
- 1...Rd2
- 2.d8Q#
- 2.d8R#
- 1...Re5
- 2.Sxc3#
- 2.d8Q#
- 2.d8R#
- 1...Rf5
- 2.d8Q#
- 2.d8R#
- 1...Rg6
- 2.d8Q#
- 2.d8R#
- 1...Bg6
- 2.d8Q#
- 2.d8R#
- 1...Bf7
- 2.Bf3#
- 2.d8Q#
- 2.d8R#
- 1...Be8
- 2.Bf3#
- 1...Bh6
- 2.d8Q#
- 2.d8R#
- 1...Bf8
- 2.d8Q#
- 2.d8R#
- 1...Bh8
- 2.d8Q#
- 2.d8R#
- 1...Sc7
- 2.Sxc7#
- 2.d8Q#
- 2.d8R#
- 1...c2
- 2.d8Q#
- 2.d8R#
- 1...e5
- 2.Sxc3#
- threat
- 1.Bb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(h);N_GUARD::S(K),XP(i)
- Q(h);N_GUARD::B(G),XP(g)
- R(a);OGATE::QAB(A),XR(a)
- R(a);OGATE,XP(C)::QAB(A)
- B(f);N_GUARD::B(G)
- S(k);N_GUARD::S(K),XS(k)
- S(k);N_GUARD::S(K)
- P(c);OGATEB,XP(C)::QAB(A)
- Tries
- Try
- S(H);CHECK,XP(b)
- Vars
- K(d);P-FLIGHT::R1(D)
- Refutation
- Q(h);XS(H)
- Try
- S(H);CHECK
- Vars
- K(d);P-FLIGHT::R1(D)
- Refutation
- S(k);XS(H)
- Try
- B(L);
- Threat
- P=Q
- Vars
- R(a);XQ(A)::P=Q
- R(e);XB(G)::P=Q
- B(f);XB(G)::P=Q
- P(b);XP(B)::P=Q
- P(c);OGATEB,XP(C)::QAB(A)
- Q(h);N_GUARD::S(K),XP(i)
- Q(h);::P=Q
- Q(h);N_GUARD::B(G),XP(g)
- R(a);::P=Q
- R(e);::P=Q
- B(f);::P=Q
- B(f);N_GUARD::B(G)
- B(j);::P=Q
- S(k);N_GUARD::S(K),XS(k)
- P(b);::P=Q
- Refutation
- P(g);
- Try
- B(L);
- Threat
- P=Q
- Vars
- R(a);XQ(A)::P=Q
- R(e);XB(G)::P=Q
- B(f);XB(G)::P=Q
- P(b);XP(B)::P=Q
- P(c);OGATEB,XP(C)::QAB(A)
- Q(h);N_GUARD::S(K),XP(i)
- Q(h);::P=Q
- Q(h);N_GUARD::B(G),XP(g)
- R(a);::P=Q
- R(e);::P=Q
- B(f);::P=Q
- B(f);N_GUARD::B(G)
- B(j);::P=Q
- S(k);N_GUARD::S(K),XS(k)
- P(b);::P=Q
- Refutation
- P(g);
- Try
- R(D);CHECK
- Vars
- Q(h);XR(D)::S(K),XP(i)
- Refutation
- R(e);XR(D)
- Try
- Q(A);P_PINP(c)
- Threat
- DUALS(2)
- Vars
- S(k);N_GUARD::S(K),XS(k)
- Refutation
- R(a);XP(C)
- Try
- P(B);
- Threat
- DUALS(2)
- Vars
- R(a);OGATE,XP(C)::QAB(A)
- P(c);OGATE,XP(B)::QAB(A),XP(c)
- S(k);N_GUARD::S(K),XS(k)
- Refutation
- P(c);XP(C)
- Try
- Actual
- B(L);
- Threat
- P=Q
- Vars
- R(a);XQ(A)::P=Q
- R(e);XB(G)::P=Q
- B(f);XB(G)::P=Q
- S(k);XB(L)::S(K),XS(k)
- P(b);XP(B)::P=Q
- P(c);OGATEB,XP(C)::QAB(A)
- Q(h);N_GUARD::S(K),XP(i)
- Q(h);::P=Q
- Q(h);N_GUARD::B(G),XP(g)
- R(a);::P=Q
- R(e);::P=Q
- B(f);::P=Q
- B(f);N_GUARD::B(G)
- B(j);::P=Q
- P(b);::P=Q
- P(g);S_CUTQ(h)::S(H),XP(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).