MESON Chess Problem Database
Problem Display
PID: 194908 (1r1Q4/8/3B2BK/N7/1n1knNRp/5p1r/2PP4/b2R4 w - - 0 1)
Guidelli, Giorgio
L'Italia Scacchistica, 1918
#2
10 + 8
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Sd5
- 2.Se6#
- 1...Sf2
- 2.Qf6#
- 1...Sc3
- 2.Qf6#
- 1...Sg3
- 2.Qf6#
- 1...Sc5
- 2.Qf6#
- 1...Sg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sd5
- Tries
- 1.Se2+?
- 1...Kd5
- 2.Bf7#
- 1...fxe2!
- 1...Kd5
- 1.Bxb4+?
- 1...Ke5
- 2.Sc4#
- 2.Sc6#
- 1...Sd6
- 2.Qf6#
- 2.Qxd6#
- 1...Rxd8!
- 1...Ke5
- 1.Bc5+?
- 1...Ke5
- 2.Sc4#
- 2.Qe7#
- 1...Kxc5!
- 1...Ke5
- 1.Be5+?
- 1...Kxe5
- 2.Sc4#
- 1...Kc5!
- 1...Kxe5
- 1.Re1?
- threat
- 2.Rxe4#
- 1...Sxd2
- 2.Qf6#
- 1...Sf2
- 2.Qf6#
- 1...Sc3
- 2.Qf6#
- 1...Sg3
- 2.Qf6#
- 1...Sc5
- 2.Be5#
- 2.Qf6#
- 1...Sg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sxd6!
- threat
- 1.Rg5?
- threat
- 2.Se6#
- 2.Bc5#
- 1...Rxd8
- 2.Se6#
- 1...Sxc2
- 2.Bc5#
- 2.Rd5#
- 1...Sxg5
- 2.Qf6#
- 1...Sxd6
- 2.Se6#
- 2.Qf6#
- 1...Sd5
- 2.Se6#
- 2.Rxd5#
- 1...Sc5
- 2.Bxc5#
- 2.Be5#
- 2.Qf6#
- 1...Sxd2!
- threat
- 1.Qb6+?
- 1...Sc5
- 2.Qxc5#
- 1...Rxb6!
- 1...Sc5
- 1.Qe7?
- threat
- 2.Be5#
- 2.Qxe4#
- 2.Qe5#
- 1...Sxd2
- 2.Qe5#
- 1...Sxd6
- 2.Qe3#
- 1...Rb5
- 2.Qxe4#
- 1...Re8
- 2.Be5#
- 1...Sd3
- 2.Qxe4#
- 1...Sc6
- 2.Qxe4#
- 1...Sf2
- 2.Bc5#
- 2.Be5#
- 2.Qf6#
- 2.Qe3#
- 2.Qe5#
- 2.Qg7#
- 1...Sc3
- 2.Bc5#
- 2.Be5#
- 2.Qf6#
- 2.Qe3#
- 2.Qe5#
- 2.Qg7#
- 1...Sg3
- 2.Bc5#
- 2.Be5#
- 2.Qf6#
- 2.Qe3#
- 2.Qe5#
- 2.Qg7#
- 1...Sc5
- 2.Bxc5#
- 2.Be5#
- 2.Qf6#
- 2.Qe3#
- 2.Qe5#
- 2.Qg7#
- 1...Sg5
- 2.Bc5#
- 2.Be5#
- 2.Qf6#
- 2.Qe3#
- 2.Qe5#
- 2.Qg7#
- 1...Sf6
- 2.Bc5#
- 2.Be5#
- 2.Qxf6#
- 2.Qe3#
- 2.Qe5#
- 1...Rh8+!
- threat
- 1.Qe8?
- threat
- 2.Qxe4#
- 2.Qe5#
- 1...Sxd2
- 2.Qe5#
- 1...Sxd6
- 2.Qe3#
- 1...Rb5
- 2.Qxe4#
- 1...Sd3
- 2.Qxe4#
- 1...Sc6
- 2.Qxe4#
- 1...Sf2
- 2.Qe3#
- 2.Qe5#
- 1...Sc3
- 2.Qe3#
- 2.Qe5#
- 1...Sg3
- 2.Qe3#
- 2.Qe5#
- 1...Sc5
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...Sg5
- 2.Qe3#
- 2.Qe5#
- 1...Sf6
- 2.Qe3#
- 2.Qe5#
- 1...Rxe8!
- threat
- 1.Qh8+?
- 1...Sf6
- 2.Qxf6#
- 1...Rxh8+!
- 1...Sf6
- 1.c3+?
- 1...Sxc3
- 2.Qf6#
- 1...Bxc3!
- 1...Sxc3
- 1.Se2+?
- Keys
- 1.Bf7!
- threat
- 2.Sb3#
- 1...Sxc2
- 2.Sc6#
- 1...Sxd2
- 2.Sd5#
- 1...Sxd6
- 2.Sd3#
- 1...Sf2
- 2.Se2#
- 1...Sc3
- 2.Se2#
- 1...Sg3
- 2.Se2#
- 1...Sc5
- 2.Se2#
- 1...Sg5
- 2.Se2#
- 1...Sf6
- 2.Se2#
- 1...Sa2
- 2.Sc6#
- 1...Sd3
- 2.Sc6#
- 1...Sd5
- 2.Se6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...f2
- 2.Se2#
- threat
- 1.Bf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(d);SBLOCK::S(D)
- S(f);N_GUARD::QAB(J)
- S(f);N_GUARD::QAB(J),XS(f)
- Tries
- Try
- S(D);CHECK,P_PINS(f)
- Vars
- K(e);N_SPINS(f),P-FLIGHT::B(H)
- Refutation
- P(b);XS(D)
- Try
- B(G);CHECK,XS(d)
- Refutation
- R(h);XQ(J)
- Try
- B(G);CHECK
- Refutation
- K(e);S_FLIGHT,XB(G)
- Try
- B(G);CHECK
- Vars
- K(e);S_FLIGHT,XB(G)::S(F)
- Refutation
- K(e);S_FLIGHT
- Try
- R(A);
- Threat
- R1(A),XS(f)
- Vars
- S(f);N_GUARD,XP(C)::QAB(J)
- S(f);N_GUARD::QAB(J)
- S(f);N_GUARD::QAB(J),XS(f)
- Refutation
- S(f);P_SPINS(f),XB(G)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(h);XQ(J)::S(D)
- S(f);N_GUARD,XR(E)::QAB(J)
- Refutation
- S(f);P_SPINS(f),XP(C)
- Try
- Q(J);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB1(J),XS(f)
- Refutation
- R(h);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(3)
- Vars
- S(f);P_SPINS(f),XP(C)::QAB1(J)
- S(f);OGATE,XB(G)::QAB1(J)
- R(h);::QAR1(J),XS(f)
- R(h);::B(G)
- S(d);::QAR1(J),XS(f)
- Refutation
- R(h);CHECK
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- S(f);P_SPINS(f),XP(C)::QAB1(J)
- S(f);OGATE,XB(G)::QAB1(J)
- R(h);::QAR1(J),XS(f)
- S(d);::QAR1(J),XS(f)
- Refutation
- R(h);XQ(J)
- Try
- Q(J);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB(J),XS(f)
- Refutation
- R(h);CHECK,XQ(J)
- Try
- P(B);CHECK
- Vars
- S(f);XP(B)::QAB(J)
- Refutation
- B(a);XP(B)
- Try
- Actual
- B(H);
- Threat
- S(F)
- Vars
- S(d);N_GUARD,XP(B)::S(F)
- S(f);P_SPINS(f),XP(C)::R(E)+S(D)
- S(f);P_SPINS(f),XB(G)::R(E)+S(D)
- S(f);::R(E)+S(D),DCHECK
- S(d);N_GUARD::S(F)
- S(d);SBLOCK::S(D)
- S(d);N_GUARD::S(F),XS(d)
- P(b);N_GUARD::S(D)
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).