MESON Chess Problem Database
Problem Display
PID: 54612 (1K3N2/1P1R3B/b1pnpp2/4k3/1N5Q/4pq2/8/5Rn1 w - - 0 1)
Sonnenfeld, Felix Alexander
Boletim da UBP, 1980
#2
8 + 9
| 5309 | O Mosqueteiro do Rei | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Qh1
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Qe2
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Qg2
- 2.Qxf6#
- 2.Qf4#
- 1...Qe4
- 2.Qxf6#
- 1...Qg4
- 2.Qxf6#
- 1...Qd5
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Qh5
- 2.Qxf6#
- 2.Qf4#
- 1...Qg3
- 2.Qxf6#
- 1...Qh3
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Qf4
- 2.Qxf4#
- 1...Sc4
- 2.Sd3#
- 2.Qd4#
- 1...Se4
- 2.Sxc6#
- 1...Sb5
- 2.Sd3#
- 1...Sf5
- 2.Sg6#
- 1...Sxb7
- 2.Qd4#
- 1...Sf7
- 2.Qd4#
- 1...Sc8
- 2.Qd4#
- 1...Se8
- 2.Qd4#
- 1...f5
- 2.Sg6#
- 1...Qd1
- Tries
- 1.Rxf3?
- threat
- 2.Sg6#
- 2.Qxf6#
- 2.Qf4#
- 1...Bd3
- 2.Qxf6#
- 2.Qf4#
- 1...Se2
- 2.Sg6#
- 2.Qxf6#
- 1...Sh3
- 2.Sg6#
- 2.Qxf6#
- 1...Se4
- 2.Sxc6#
- 2.Sg6#
- 2.Qxe4#
- 2.Qf4#
- 1...Sf5
- 2.Sxc6#
- 2.Sg6#
- 2.Qf4#
- 1...Se8
- 2.Sxc6#
- 2.Sg6#
- 2.Rxe3#
- 2.Qg3#
- 2.Qh2#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...f5
- 2.Sg6#
- 1...Sxf3!
- threat
- 1.Re7?
- threat
- 2.Sd7#
- 2.Rxe6#
- 1...Sxb7
- 2.Rxe6#
- 1...Qe4
- 2.Qxf6#
- 1...Qg4
- 2.Qxf6#
- 1...Qf4
- 2.Qxf4#
- 1...Sc4
- 2.Rxe6#
- 1...Sb5
- 2.Rxe6#
- 1...Sf5
- 2.Rxe6#
- 1...Sf7
- 2.Rxe6#
- 1...Sc8
- 2.Rxe6#
- 1...Se8
- 2.Rxe6#
- 1...Qd5
- 2.Sg6#
- 2.Sd7#
- 2.Qxf6#
- 2.Qf4#
- 1...Qh3
- 2.Sg6#
- 2.Sd7#
- 2.Qxf6#
- 2.Qf4#
- 1...Qf5
- 2.Sd7#
- 1...Bc4
- 2.Sd7#
- 1...Se4!
- threat
- 1.Qh2+?
- 1...Qg3
- 2.Qb2#
- 1...Qf4
- 2.Qxf4#
- 1...Kd4!
- 1...Qg3
- 1.Rxf3?
- Keys
- 1.Rd8!
- threat
- 2.Sd7#
- 1...Sxb7
- 2.Qd4#
- 1...Qe4
- 2.Qxf6#
- 1...Qg4
- 2.Qxf6#
- 1...Qf4
- 2.Qxf4#
- 1...Sc4
- 2.Sd3#
- 2.Qd4#
- 1...Se4
- 2.Sxc6#
- 1...Sb5
- 2.Sd3#
- 1...Sf5
- 2.Sg6#
- 1...Sf7
- 2.Qd4#
- 1...Sc8
- 2.Qd4#
- 1...Se8
- 2.Qd4#
- threat
- 1.Rd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(c);N_GUARD::QAB1(C),XP(i)
- Q(c);N_GUARD::QAB1(C),XQ(c)
- S(g);S_CUTQ(c)::S(B),XP(f)
- S(g);S_CUTB(e)::S(B)
- S(g);SBLOCK::S(H)
- S(g);XP(D)::QAB1(C)
- S(g);::QAB1(C)
- P(i);SBLOCK::S(H)
- Tries
- Try
- R(A);XQ(c)
- Threat
- DUALS(3)
- Vars
- P(i);::S(H)
- Refutation
- S(a);XR(A)
- Try
- R(E);P_PINP(h)
- Threat
- DUALS(2)
- Vars
- S(g);XP(D)::R1(E),XP(h)
- Q(c);N_GUARD::QAB1(C),XP(i)
- Q(c);N_GUARD::QAB1(C),XQ(c)
- S(g);::R1(E),XP(h)
- Q(c);::S(H)
- B(e);::S(H)
- Refutation
- S(g);
- Try
- Q(C);CHECK
- Vars
- Q(c);P_SPINQ(c)::QAB(C)
- Q(c);N_GUARD,P_SPINQ(c)::QAB1(C),XQ(c)
- Refutation
- K(d);P_SPINS(g),S_FLIGHT
- Try
- Actual
- R(E);
- Threat
- S(H)
- Vars
- S(g);XP(D)::QAB1(C)
- Q(c);N_GUARD::QAB1(C),XP(i)
- Q(c);N_GUARD::QAB1(C),XQ(c)
- S(g);S_CUTQ(c)::S(B),XP(f)
- S(g);S_CUTB(e)::S(B)
- S(g);SBLOCK::S(H)
- S(g);::QAB1(C)
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).