MESON Chess Problem Database
Problem Display
PID: 261999 (3R1b2/2N5/1BpqQ1K1/1np3p1/1P1k4/r6R/1NrPP3/1Bnb4 w - - 0 1)
Somma, Francesco
L'Italia Scacchistica, 1932
#2
11 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Bxc5#
- 1...Rxd2
- 2.Bxc5#
- 2.Qf6#
- 1...Rcc3
- 2.Qf6#
- 1...Rc4
- 2.Qf6#
- 1...Ra1
- 2.e3#
- 1...Ra2
- 2.e3#
- 1...Ra4
- 2.e3#
- 1...Ra5
- 2.e3#
- 1...Ra6
- 2.e3#
- 1...Ra7
- 2.e3#
- 1...Ra8
- 2.e3#
- 1...Sb3
- 2.Rd3#
- 2.e3#
- 1...Sd3
- 2.e3#
- 1...Sc3
- 2.Bxc5#
- 2.e3#
- 1...Rxb2
- Tries
- 1.Bxc2?
- threat
- 2.Bxc5#
- 2.Qf6#
- 1...Qxd8
- 2.Qe4#
- 1...Sxc7
- 2.Bxc5#
- 1...Qd5
- 2.Qe4#
- 2.Qf6#
- 1...Qd7
- 2.Qe4#
- 2.Qf6#
- 1...Rc3
- 2.Qf6#
- 1...Rd3
- 2.Bxc5#
- 1...Re3
- 2.Bxc5#
- 1...Rf3
- 2.Bxc5#
- 1...Be7
- 2.Bxc5#
- 1...Bg7
- 2.Bxc5#
- 1...Sb3
- 2.Rd3#
- 2.Qf6#
- 2.e3#
- 1...Sd3
- 2.e3#
- 1...Bxc2+!
- threat
- 1.Rxa3?
- threat
- 2.e3#
- 1...Sxe2
- 2.Rd3#
- 1...Rc3
- 2.Qf6#
- 1...Bxe2!
- threat
- 1.Rc3?
- threat
- 2.Bxc5#
- 2.e3#
- 1...Qxd8
- 2.Qe3#
- 2.e3#
- 1...Rxd2
- 2.Rc4#
- 2.Qf6#
- 1...Rcxc3
- 2.Qf6#
- 1...Bxe2
- 2.Bxc5#
- 1...Sxe2
- 2.Bxc5#
- 1...Qd5
- 2.Qe3#
- 2.e3#
- 1...Qd7
- 2.Qe3#
- 2.e3#
- 1...Sb3
- 2.Rd3#
- 2.e3#
- 1...Sd3
- 2.e3#
- 1...Raxc3!
- threat
- 1.Rd3+?
- 1...Sxd3
- 2.e3#
- 1...Rxd3!
- 1...Sxd3
- 1.Re3?
- threat
- 2.Re4#
- 2.Qf6#
- 1...Qxd8
- 2.Re4#
- 2.Qg4#
- 2.Qe4#
- 2.Qe5#
- 1...Rxb2
- 2.Bxc5#
- 2.Re4#
- 1...Rxd2
- 2.Bxc5#
- 1...Sxc7
- 2.Re4#
- 1...Be7
- 2.Re4#
- 1...Bg7
- 2.Re4#
- 1...Sd3
- 2.Re4#
- 1...Sc3
- 2.Bxc5#
- 2.Qf6#
- 1...Rxe3!
- threat
- 1.Rh4+?
- 1...g4
- 2.Rxg4#
- 1...gxh4!
- 1...g4
- 1.Bxc2?
- Keys
- 1.Sc4!
- threat
- 2.Bxc5#
- 1...Qxd8
- 2.Qg4#
- 1...Rxc4
- 2.Qf6#
- 1...Qd5
- 2.Qg4#
- 1...Qd7
- 2.Qg4#
- 1...Sb3
- 2.Rd3#
- 1...Sd3
- 2.e3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- R(c);N_GUARD,XS(B)::B(G),XP(g)
- R(c);::QAB(H)
- R(d);N_GUARD::P(D)
- S(a);S_CUTR(d)::P(D)
- Tries
- Try
- B(A);XR(c)
- Threat
- DUALS(2)
- Vars
- Q(j);N_PINQ(H),N_SPINQ(j),XR(K)::QAR1(H)
- S(f);XS(J)::B(G),XP(g)
- R(d);::QAB(H)
- R(d);::B(G),XP(g)
- B(k);::B(G),XP(g)
- S(a);S_CUTR(d)::P(D)
- Refutation
- B(b);CHECK,XB(A)
- Try
- R(E);XR(d)
- Threat
- P(D)
- Vars
- S(a);N_GUARD,XP(D)::R1(E)
- R(c);::QAB(H)
- Refutation
- B(b);XP(D)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(c);XR(E)::QAB(H)
- B(b);XP(D)::B(G),XP(g)
- S(a);XP(D)::B(G),XP(g)
- S(a);::P(D)
- Refutation
- R(d);XR(E)
- Try
- R(E);CHECK
- Vars
- S(a);XR(E)::P(D)
- Refutation
- R(d);XR(E)
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XP(C)::B(G),XP(g)
- S(f);XS(J)::R1(E)
- B(k);::R1(E)
- S(a);::R1(E)
- Refutation
- R(d);XR(E)
- Try
- R(E);CHECK
- Vars
- P(h);N_SPINP(g),P_SPINP(h)::R(E),XP(h)
- Refutation
- P(h);XR(E)
- Try
- Actual
- S(B);
- Threat
- B(G),XP(g)
- Vars
- Q(j);N_PINQ(H),N_SPINQ(j),XR(K)::QAR(H)
- R(c);SBLOCK,XS(B)::QAB(H)
- Q(j);N_PINQ(H)::QAR(H)
- S(a);N_GUARD,S_CUTR(d)::R1(E)
- S(a);SBLOCK,S_CUTR(d)::P(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).