MESON Chess Problem Database
Problem Display
PID: 259664 (1N6/2n5/1n1p4/KpkPP3/1pqr2NQ/1Pb5/3R4/2R3BB w - - 0 1)
Somma, Francesco
L'Italia Scacchistica, 1932
#2
11 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Bxd4#
- 1...Qe2
- 2.Bxd4#
- 1...Sa4
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sba8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Sa6
- 2.Sxa6#
- 1...Se6
- 2.Sa6#
- 1...Sca8
- 2.Sa6#
- 1...Se8
- 2.Sa6#
- 1...dxe5
- 2.Qe7#
- 1...Qf1
- Tries
- 1.Qe7?
- threat
- 2.Qxd6#
- 2.Qxc7#
- 1...Qxb3
- 2.Qxc7#
- 1...Sbxd5
- 2.Qxd6#
- 1...Scxd5
- 2.Qxd6#
- 1...Sd7
- 2.Sxd7#
- 2.Qxd6#
- 1...Sba8
- 2.Sd7#
- 2.Qxd6#
- 1...Sc8
- 2.Sd7#
- 2.Qxc7#
- 1...Sa6
- 2.Sxa6#
- 2.Qxd6#
- 1...Se6
- 2.Sa6#
- 2.Qxd6#
- 1...Sca8
- 2.Sa6#
- 2.Qxd6#
- 1...Se8
- 2.Sa6#
- 1...Qxd5!
- threat
- 1.Qd8?
- threat
- 2.Qxc7#
- 2.Qxd6#
- 1...Qxb3
- 2.Qxc7#
- 1...Sbxd5
- 2.Qxd6#
- 1...Scxd5
- 2.Qxd6#
- 1...dxe5
- 2.Qxc7#
- 2.Qe7#
- 2.Qf8#
- 1...Sd7
- 2.Sxd7#
- 2.Qxc7#
- 1...Sba8
- 2.Sd7#
- 2.Qxd6#
- 1...Sc8
- 2.Sd7#
- 2.Qxc7#
- 1...Sa6
- 2.Sxa6#
- 2.Qxb6#
- 2.Qxd6#
- 1...Se6
- 2.Sa6#
- 2.Qxb6#
- 2.Qxd6#
- 1...Sca8
- 2.Sa6#
- 2.Qxd6#
- 1...Se8
- 2.Sa6#
- 2.Qxb6#
- 1...Qxd5!
- threat
- 1.Qe7?
- Keys
- 1.Sf2!
- 1...Qxb3
- 2.Qxd4#
- 1...Qxd5
- 2.Sd3#
- 1...Rxd2
- 2.Sd3#
- 1...Rxh4
- 2.Sd3#
- 2.Se4#
- 1...Rxd5
- 2.Sd3#
- 2.Se4#
- 1...Bxd2
- 2.Sd3#
- 1...Sbxd5
- 2.Se4#
- 1...Scxd5
- 2.Se4#
- 1...dxe5
- 2.Qe7#
- 1...Qf1
- 2.Qxd4#
- 1...Qe2
- 2.Qxd4#
- 1...Qd3
- 2.Sxd3#
- 1...Rd3
- 2.Sxd3#
- 1...Re4
- 2.Sxe4#
- 1...Rf4
- 2.Sd3#
- 2.Se4#
- 1...Rg4
- 2.Sd3#
- 2.Se4#
- 1...Ba1
- 2.Sd3#
- 1...Bb2
- 2.Sd3#
- 1...Sa4
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sba8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Sa6
- 2.Sxa6#
- 1...Se6
- 2.Sa6#
- 1...Sca8
- 2.Sa6#
- 1...Se8
- 2.Sa6#
- 1...Qxb3
- 1.Sf2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 11
- REMOVED MATES = 0
- Sets
- Q(c);N_GUARD,P_SPINB(a)::B(B),XR(d)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- S(i);N_GUARD::S(K),XS(i)
- S(i);N_GUARD::S(K)
- P(h);OGATEB,XP(J)::QAB(G)
- Tries
- Try
- Q(G);P_PINP(h)
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINB(a),XP(E)::QAR2(G),XS(i)
- S(g);XP(I)::QAB1(G),XP(h)
- S(i);XP(I)::QAB1(G),XP(h)
- S(i);N_GUARD::S(K)
- Refutation
- Q(c);P_SPINB(a),XP(I)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINB(a),XP(E)::QAR2(G),XS(i)
- S(g);XP(I)::QAB1(G),XP(h)
- S(i);XP(I)::QAB1(G),XP(h)
- Refutation
- Q(c);P_SPINB(a),XP(I)
- Try
- Actual
- S(F);N_PINR(d)
- Vars
- Q(c);N_GUARD,P_SPINB(a),XP(E)::QAB1(G),XR(d)
- Q(c);N_GUARD,P_SPINB(a),XP(I)::S(F)
- R(d);XR(D)::B(B)+S(F),DCHECK
- B(a);P_SPINQ(c),XR(D)::S(F)
- S(g);SBLOCK,XP(I)::S(F)
- S(i);SBLOCK,XP(I)::S(F)
- P(h);OGATEB,XP(J)::QAB(G)
- Q(c);N_GUARD,P_SPINB(a)::QAB1(G),XR(d)
- Q(c);N_GUARD,P_SPINB(a)::S(F),XQ(c)
- R(d);::B(B)+S(F),DCHECK,XR(d)
- B(a);P_SPINQ(c)::S(F)
- S(g);N_GUARD::S(K)
- S(g);N_GUARD::S(K),XS(g)
- S(i);N_GUARD::S(K),XS(i)
- S(i);N_GUARD::S(K)
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).