MESON Chess Problem Database
Problem Display
PID: 263349 (1R6/4K2p/PPkN4/7R/3pP3/2bQ1B2/Nr1n4/1rqb4 w - - 0 1)
Somma, Francesco
L'Italia Scacchistica, 1933
#2
10 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxb6
- 2.Rc8#
- 1...Bb3
- 2.Qb5#
- 1...Bb4
- 2.Qb5#
- 1...Sf1
- 2.Qc4#
- 1...Sb3
- 2.Qb5#
- 1...Sxf3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sxe4
- 2.Bxe4#
- 2.Qc4#
- 2.Qxe4#
- 1...Rxb6
- Tries
- 1.Sb4+?
- 1...Bxb4
- 2.Qb5#
- 1...Rxb4!
- 1...Bxb4
- 1.Sc4?
- threat
- 2.Rc8#
- 1...Sxc4
- 2.Qxc4#
- 1...Bb4+!
- threat
- 1.Sf7?
- threat
- 2.Sd8#
- 1...Rxb6
- 2.Rc8#
- 1...Bb4+!
- threat
- 1.Bg4?
- threat
- 2.Bd7#
- 1...Rxb6
- 2.Rc8#
- 1...Bxg4!
- threat
- 1.Qxd4?
- threat
- 2.Rc5#
- 2.Rc8#
- 2.Qc5#
- 2.Qd5#
- 1...Rxb6
- 2.Rc5#
- 2.Rc8#
- 2.Qc5#
- 1...Rb5
- 2.Rc8#
- 1...Bb3
- 2.Rc5#
- 2.Rc8#
- 2.Qc5#
- 1...Bb4
- 2.Rc8#
- 2.Qd5#
- 1...Ba5
- 2.Rc8#
- 2.Qd5#
- 1...Sb3
- 2.Rc8#
- 2.Qa4#
- 2.Qd5#
- 1...Bxd4!
- threat
- 1.e5+?
- 1...Kc5
- 2.e6#
- 1...Sxf3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Bxf3!
- 1...Kc5
- 1.a7?
- threat
- 2.a8Q#
- 2.a8B#
- 1...Rxb6
- 2.Rc8#
- 1...Bxf3
- 2.a8Q#
- 2.a8B#
- 1...Sxf3
- 2.Qc4#
- 2.a8Q#
- 2.a8B#
- 1...Sxe4
- 2.Bxe4#
- 2.Qc4#
- 2.Qxe4#
- 2.a8Q#
- 2.a8B#
- 1...Qc2
- 2.a8Q#
- 2.a8B#
- 1...Ra1
- 2.a8Q#
- 2.a8B#
- 1...Rc2
- 2.a8Q#
- 2.a8B#
- 1...Rb3
- 2.a8Q#
- 2.a8B#
- 1...Rb4
- 2.a8Q#
- 2.a8B#
- 1...Rb5
- 2.a8Q#
- 2.a8B#
- 1...Bc2
- 2.a8Q#
- 2.a8B#
- 1...Be2
- 2.a8Q#
- 2.a8B#
- 1...Bb3
- 2.Qb5#
- 2.a8Q#
- 2.a8B#
- 1...Ba4
- 2.a8Q#
- 2.a8B#
- 1...Bb4
- 2.Qb5#
- 2.a8Q#
- 2.a8B#
- 1...Ba5
- 2.a8Q#
- 2.a8B#
- 1...Sf1
- 2.Qc4#
- 2.a8Q#
- 2.a8B#
- 1...Sb3
- 2.Qb5#
- 2.a8Q#
- 2.a8B#
- 1...Sc4
- 2.Qxc4#
- 2.a8Q#
- 2.a8B#
- 1...h6
- 2.a8Q#
- 2.a8B#
- 1...Rxa2!
- threat
- 1.Sb4+?
- Keys
- 1.Rh6!
- threat
- 2.Sb7#
- 1...Kc5
- 2.Sb7#
- 1...Rxb6
- 2.Rc8#
- 1...Sxf3
- 2.Qc4#
- 1...Sxe4
- 2.Qc4#
- 1...Bb3
- 2.Qb5#
- 1...Bb4
- 2.Qb5#
- 1...Sf1
- 2.Qc4#
- 1...Sb3
- 2.Qb5#
- 1...Sc4
- 2.Qxc4#
- threat
- 1.Rh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(d);SBLOCK,XP(G)::R(J)
- B(c);S_CUTR(d)::QAB1(B)
- B(f);P_PINS(H),S_CUTR(d)::QAB1(B)
- S(e);N_GUARD::QAR2(B)
- S(e);S_CUTR(d)::QAB1(B)
- S(e);N_GUARD,XB(C)::QAR2(B)
- S(e);N_GUARD::QAR2(B),XS(e)
- Tries
- Try
- S(A);CHECK
- Vars
- B(f);P_PINS(H),XS(A)::QAB1(B)
- Refutation
- R(d);XS(A)
- Try
- S(H);
- Threat
- R(J)
- Vars
- S(e);OGATE,XS(H)::QAR2(B),XS(e)
- Refutation
- B(f);CHECK
- Try
- S(H);
- Threat
- S(H)
- Vars
- R(d);SBLOCK,XP(G)::R(J)
- Refutation
- B(f);CHECK
- Try
- B(C);
- Threat
- B(C)
- Vars
- R(d);SBLOCK,XP(G)::R(J)
- Refutation
- B(c);XB(C)
- Try
- Q(B);XP(g)
- Threat
- DUALS(4)
- Vars
- R(d);::R(J)
- Refutation
- B(f);XQ(B)
- Try
- P(D);CHECK
- Vars
- K(h);P-FLIGHT,S_CUTB(c),S_CUTS(e),S_CUTS(e)::R(E)+P(D)
- S(e);XB(C)::QAR2(B)
- S(e);P_SPINS(e)::QAR2(B)
- Refutation
- B(c);XB(C)
- Try
- P(F);
- Threat
- P=Q
- Vars
- R(d);SBLOCK,XP(G)::R(J)
- B(c);XB(C)::P=Q
- Q(b);::P=Q
- R(a);::P=Q
- R(d);::P=Q
- B(c);::P=Q
- B(f);::P=Q
- P(i);::P=Q
- Refutation
- R(d);XS(A)
- Try
- Actual
- R(E);
- Threat
- R(E)+S(H)
- Vars
- K(h);P-FLIGHT::S(H)
- R(d);SBLOCK,XP(G)::R(J)
- S(e);N_GUARD,XB(C)::QAR2(B)
- S(e);N_GUARD,P_SPINS(e),XP(D)::QAR2(B)
- B(c);S_CUTR(d)::QAB1(B)
- B(f);P_PINS(H),S_CUTR(d)::QAB1(B)
- S(e);N_GUARD::QAR2(B)
- S(e);S_CUTR(d)::QAB1(B)
- S(e);N_GUARD::QAR2(B),XS(e)
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).