MESON Chess Problem Database
Problem Display
PID: 261876 (1R5b/N3pb2/1pr3n1/2k5/4P3/Pp1QK3/8/8 w - - 0 1)
Somma, Francesco
Resto del Carlino Bologna, 1924
#2
6 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rd6
- 2.Qb5#
- 1...Re6
- 2.Qd5#
- 1...Rf6
- 2.Qd4#
- 1...Rc8
- 2.Rxc8#
- 1...Bd5
- 2.Qxd5#
- 1...Be8
- 2.Qd5#
- 1...Bd4+
- 2.Qxd4#
- 1...Se5
- 2.Qd4#
- 1...b5
- 2.Rxb5#
- 1...Rd6
- Tries
- 1.Rc8?
- threat
- 2.Rxc6#
- 1...Bd4+
- 2.Qxd4#
- 1...Bd5
- 2.Qxd5#
- 1...Rc7
- 2.Rxc7#
- 1...Be8
- 2.Qd5#
- 1...Se5
- 2.Qd4#
- 1...Rxc8!
- threat
- 1.Rd8?
- threat
- 2.Qb5#
- 1...Bd4+
- 2.Qxd4#
- 1...b5
- 2.Qxb5#
- 1...Bc4!
- threat
- 1.Rxh8?
- threat
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...Rd6
- 2.Qb5#
- 1...e5!
- threat
- 1.Qd2?
- threat
- 2.Qb4#
- 1...Bd4+
- 2.Qxd4#
- 1...Kc4
- 2.Qb4#
- 1...Bc3!
- threat
- 1.e5?
- threat
- 2.Qb5#
- 2.Qd4#
- 1...Sxe5
- 2.Qd4#
- 1...Bc4
- 2.Qd4#
- 1...Rd6
- 2.Qb5#
- 1...b5
- 2.Rxb5#
- 2.Qxb5#
- 2.Qd4#
- 1...Bxe5!
- threat
- 1.Rc8?
- Keys
- 1.Qd7!
- threat
- 2.Qxc6#
- 1...Bd4+
- 2.Qxd4#
- 1...Kc4
- 2.Qxc6#
- 1...Rd6
- 2.Qb5#
- 1...Re6
- 2.Qd5#
- 1...Rf6
- 2.Qd4#
- 1...Rc7
- 2.Qxc7#
- 1...Rc8
- 2.Rxc8#
- 1...Bd5
- 2.Qxd5#
- 1...Be8
- 2.Qd5#
- 1...Se5
- 2.Qd4#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(d);SBLOCK::QAR1(B)
- R(d);P_PINP(D),S_CUTB(g)::QAR1(B)
- R(d);S_CUTB(h)::QAB1(B)
- R(d);OGATEB::R(F),XR(d)
- B(g);N_GUARD::QAR1(B),XB(g)
- B(g);N_GUARD::QAR1(B)
- B(h);CHECK,N_GUARD::QAB1(B),XB(h)
- S(e);S_CUTB(h)::QAB1(B)
- P(c);OGATE::R1(F),XP(c)
- Tries
- Try
- R(F);P_PINR(d)
- Threat
- R1(F),XR(d)
- Vars
- B(h);CHECK,N_GUARD::QAB1(B),XB(h)
- B(g);N_GUARD::QAR1(B),XB(g)
- R(d);OGATEB::R(F),XR(d)
- B(g);N_GUARD::QAR1(B)
- S(e);S_CUTB(h)::QAB1(B)
- Refutation
- R(d);N_SPINR(d),XR(F)
- Try
- R(F);
- Threat
- QAR1(B)
- Vars
- B(h);CHECK,N_GUARD::QAB1(B),XB(h)
- P(c);::QAR1(B),XP(c)
- Refutation
- B(g);
- Try
- R(F);XB(h)
- Threat
- QAB1(B)
- Vars
- B(g);N_GUARD::QAR1(B),XB(g)
- R(d);SBLOCK::QAR1(B)
- Refutation
- P(f);
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- B(h);CHECK,N_GUARD::QAB1(B),XB(h)
- K(b);P-FLIGHT::QAR1(B)
- Refutation
- B(h);
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- S(e);XP(D)::QAB1(B)
- B(g);::QAB1(B)
- R(d);::QAR1(B)
- Refutation
- B(h);XP(D)
- Try
- Actual
- Q(B);
- Threat
- QAR1(B),XR(d)
- Vars
- B(h);CHECK,N_GUARD::QAB1(B),XB(h)
- K(b);P-FLIGHT::QAR2(B),XR(d)
- R(d);OGATE,SBLOCK::QAR1(B)
- R(d);P_PINP(D),S_CUTB(g)::QAR1(B)
- R(d);S_CUTB(h)::QAB1(B)
- R(d);OGATEB::QAR2(B),XR(d)
- R(d);OGATEB::R(F),XR(d)
- B(g);N_GUARD::QAR1(B),XB(g)
- B(g);N_GUARD::QAR1(B)
- S(e);S_CUTB(h)::QAB1(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).