MESON Chess Problem Database
Problem Display
PID: 262416 (8/1p6/3N1bR1/2PPkB2/1N1p1q2/4n3/1n2Q2B/K7 w - - 0 1)
Somma, Francesco
Deutsche Schachzeitung, 1929
#2
9 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxh2
- 2.Qxh2#
- 1...Qg3
- 2.Bxg3#
- 1...Bh4
- 2.Re6#
- 1...Bg5
- 2.Re6#
- 1...Be7
- 2.Re6#
- 1...Bg7
- 2.Re6#
- 1...Bd8
- 2.Re6#
- 1...Bh8
- 2.Re6#
- 1...d3
- 2.Qxb2#
- 2.Qxe3#
- 1...Qxh2
- Tries
- 1.Bb1?
- threat
- 2.Sf7#
- 1...Qxh2
- 2.Qxh2#
- 1...Qg3
- 2.Bxg3#
- 1...d3
- 2.Qxb2#
- 2.Qxe3#
- 1...Sd3!
- threat
- 1.Bc2?
- threat
- 2.Sf7#
- 1...Qxh2
- 2.Qxh2#
- 1...Qg3
- 2.Bxg3#
- 1...d3
- 2.Qxe3#
- 1...Sd3!
- threat
- 1.Bd3?
- threat
- 2.Sf7#
- 1...Qxh2
- 2.Qxh2#
- 1...Qg3
- 2.Bxg3#
- 1...Sxd3!
- threat
- 1.Qf3?
- threat
- 2.Bxf4#
- 2.Qe4#
- 2.Qxf4#
- 1...Qxh2
- 2.Sf7#
- 2.Qe4#
- 1...Sxd5
- 2.Qe4#
- 2.Qxd5#
- 1...d3
- 2.Qe4#
- 2.Qxe3#
- 2.Qxf4#
- 1...Sd3
- 2.Sxd3#
- 2.Qe4#
- 1...Qg3
- 2.Sf7#
- 2.Bxg3#
- 2.Qe4#
- 2.Qxg3#
- 1...Bg5
- 2.Re6#
- 2.Qe4#
- 1...Sg2
- 2.Qe4#
- 1...Sc2+!
- threat
- 1.Bb1?
- Keys
- 1.Be4!
- 1...Sc2+
- 2.Bxc2#
- 1...Qxh2
- 2.Qxh2#
- 1...Sxd5
- 2.Bxd5#
- 1...Qg3
- 2.Bxg3#
- 1...d3
- 2.Qxb2#
- 1...Sd3
- 2.Sxd3#
- 1...Bh4
- 2.Re6#
- 1...Bg5
- 2.Re6#
- 1...Be7
- 2.Re6#
- 1...Bg7
- 2.Re6#
- 1...Bd8
- 2.Re6#
- 1...Bh8
- 2.Re6#
- 1...Sbd1
- 2.Sd3#
- 1...Sa4
- 2.Sd3#
- 1...Sbc4
- 2.Sd3#
- 1...Sed1
- 2.Sf7#
- 1...Sf1
- 2.Sf7#
- 1...Sg2
- 2.Sf7#
- 2.Bxg2#
- 1...Sec4
- 2.Sf7#
- 1...Sg4
- 2.Sf7#
- 1...Sf5
- 2.Sf7#
- 2.Bxf5#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Sc2+
- 1.Be4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(B),XQ(d)
- Q(d);OGATEB::B(C),XQ(d)
- B(f);OGATE::R1(I)
- Tries
- Try
- B(G);
- Threat
- S(H)
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(B),XQ(d)
- Q(d);OGATEB::B(C),XQ(d)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- S(H)
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(B),XQ(d)
- Q(d);OGATEB::B(C),XQ(d)
- P(c);N_GUARD::QAR2(B),XS(b)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- S(H)
- Vars
- Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(B),XQ(d)
- Q(d);OGATEB::B(C),XQ(d)
- Refutation
- S(a);XB(G)
- Try
- Q(B);N_PINS(b)
- Threat
- DUALS(3)
- Vars
- S(b);::QAR1(B)
- Refutation
- S(b);CHECK
- Try
- Actual
- B(G);N_PINS(b)
- Vars
- S(b);CHECK,OGATEB::QAR(B)+B(G),XS(b)
- Q(d);N_SPINQ(d),OGATE,XB(C)::QAB(B),XQ(d)
- S(b);OGATE,XP(F)::QAR(B)+B(G),XS(b)
- Q(d);OGATEB::B(C),XQ(d)
- P(c);OGATEB::QAB(B),XS(a)
- S(a);N_GUARD::S(D),XS(a)
- B(f);OGATE::R1(I)
- S(a);N_GUARD::S(D)
- S(b);::S(H)
- P(g);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).