MESON Chess Problem Database
Problem Display
PID: 262940 (3n1N2/4Bb2/1K2P1p1/1P2k3/R2R2P1/r4p2/pQ3bnN/4r2q w - - 0 1)
Somma, Francesco
O Globo, 1931
(First published on Mon May 18 1931)
#2
10 + 11
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Rd3#
- 1...Rxa4
- 2.Sxf3#
- 1...Be3
- 2.Sxf3#
- 1...Bxd4+
- 2.Qxd4#
- 1...Bxe6
- 2.Sxg6#
- 1...Sxe6
- 2.Sd7#
- 1...Re3
- Tries
- 1.Qxa3?
- threat
- 2.Sxf3#
- 2.Qc5#
- 2.Qd6#
- 1...Qxh2
- 2.Qc5#
- 2.Qd6#
- 1...Bxe6
- 2.Sxf3#
- 2.Sxg6#
- 2.Qd6#
- 1...Sxe6
- 2.Sxf3#
- 2.Sd7#
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Rc1
- 2.Sxf3#
- 2.Qd6#
- 1...Re3
- 2.Qc5#
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sf4
- 2.Qd6#
- 1...Sh4
- 2.Qc5#
- 2.Qd6#
- 1...Sb7
- 2.Sxf3#
- 1...Bxd4+!
- threat
- 1.Qc3?
- threat
- 2.Sxf3#
- 2.Qc5#
- 2.Qc7#
- 1...Bxd4+
- 2.Qxd4#
- 1...Qxh2
- 2.Qc5#
- 2.Qc7#
- 1...Rxa4
- 2.Sxf3#
- 2.Qc5#
- 1...Bxe6
- 2.Sxf3#
- 2.Sxg6#
- 2.Qc7#
- 1...Sxe6
- 2.Sxf3#
- 2.Sd7#
- 1...Re4
- 2.Qc7#
- 1...Rc1
- 2.Sxf3#
- 1...Re3
- 2.Qc5#
- 2.Qc7#
- 1...Se3
- 2.Qc7#
- 1...Sf4
- 2.Qc7#
- 1...Sh4
- 2.Qc5#
- 2.Qc7#
- 1...Sc6
- 2.Sxf3#
- 2.Qc5#
- 1...Sb7
- 2.Sxf3#
- 1...Rxc3!
- threat
- 1.Qb4?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Bxd4+
- 2.Qxd4#
- 1...Bxe6
- 2.Sxg6#
- 2.Qd6#
- 1...Sxe6
- 2.Sd7#
- 2.Qd6#
- 1...Re4
- 2.Qd6#
- 1...Rc1
- 2.Qd6#
- 1...Rc3
- 2.Qd6#
- 1...Se3
- 2.Qd6#
- 1...Sf4
- 2.Qd6#
- 1...Sb7!
- threat
- 1.Qxa3?
- Keys
- 1.Qd2!
- threat
- 2.Qg5#
- 1...Bxd4+
- 2.Qxd4#
- 1...Rxa4
- 2.Sxf3#
- 1...Bxe6
- 2.Sxg6#
- 1...Sxe6
- 2.Sd7#
- 1...Ree3
- 2.Rd5#
- 1...Rae3
- 2.Rd5#
- 1...Be3
- 2.Sxf3#
- 1...Bh4
- 2.Rd5#
- 1...Se3
- 2.Re4#
- 1...Sf4
- 2.Qxf4#
- 1...Sh4
- 2.Qf4#
- 1...g5
- 2.Qxg5#
- threat
- 1.Qd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(f);N_PINR(D)::QAB(A)+R(D)
- R(f);N_GUARD,XR(C)::S(B),XP(g)
- B(d);S_CUTR(f)::S(B),XP(g)
- B(d);CHECK,OGATE,P_SPINB(d),XR(D)::QAB1(A),XB(d)
- B(j);N_GUARD,SBLOCK,XP(H)::S(J),XP(i)
- S(k);SBLOCK,XP(H)::S(J)
- Tries
- Try
- Q(A);XR(f)
- Threat
- DUALS(3)
- Vars
- R(a);::QAB1(A)
- S(e);N_PINR(D)::QAB1(A)
- S(e);::QAB1(A)
- S(k);::S(B),XP(g)
- Refutation
- B(d);CHECK,XR(D)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- B(d);CHECK,OGATE,P_SPINB(d),XR(D)::QAB1(A),XB(d)
- R(a);::QAB(A)
- R(a);::S(B),XP(g)
- S(e);N_PINR(D)::QAB(A)
- S(e);::QAB(A)
- S(k);::S(B),XP(g)
- Refutation
- R(f);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,OGATE,XR(D)::QAB1(A),XB(d)
- R(a);::QAB1(A)
- R(f);::QAB1(A)
- S(e);N_PINR(D)::QAB1(A)
- S(e);::QAB1(A)
- Refutation
- S(k);
- Try
- Actual
- Q(A);
- Threat
- QAR2(A)
- Vars
- B(d);CHECK,OGATE,XR(D)::QAB1(A),XB(d)
- R(f);N_GUARD,XR(C)::S(B),XP(g)
- B(j);N_GUARD,SBLOCK,XP(H)::S(J),XP(i)
- S(k);SBLOCK,XP(H)::S(J)
- R(a);N_PINR(D)::R1(D)
- R(f);N_PINR(D)::R1(D)
- B(d);S_CUTR(f)::S(B),XP(g)
- B(d);N_PINR(D)::R1(D)
- S(e);N_PINR(D)::R1(D)
- S(e);N_GUARD::QAB1(A),XS(e)
- S(e);N_GUARD::QAB1(A)
- P(i);::QAR2(A),XP(i)
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).