MESON Chess Problem Database
Problem Display
PID: 243561 (6Q1/3BPp2/1bRpRP1r/1n1k1N1p/p4K2/qp1P1N2/8/8 w - - 0 1)
Castellari, Umberto
4th Prize, Revista Romana de Sah, 1960
#2
10 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Be3+
- 2.Sxe3#
- 1...Ba5
- 2.Se3#
- 1...Bc7
- 2.Se3#
- 1...Bd8
- 2.Se3#
- 1...Sd4
- 2.Se3#
- 1...fxe6
- 2.Qxe6#
- 1...Be3+
- Tries
- 1.Qg2?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.S3d4#
- 2.S3h4#
- 2.Se5#
- 2.Sg5#
- 1...Qc1+
- 2.Sd2#
- 1...Qb4+
- 2.S3d4#
- 1...Be3+
- 2.Sxe3#
- 1...Qb2
- 2.Sd2#
- 1...Qa2
- 2.Sd2#
- 1...Rg6
- 2.Sg5#
- 1...Bg1
- 2.Se1#
- 2.Sxg1#
- 2.Sd2#
- 2.Sh2#
- 2.S3d4#
- 2.S3h4#
- 2.Se5#
- 2.Sg5#
- 1...Bd4
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.S3xd4#
- 2.S3h4#
- 2.Se5#
- 2.Sg5#
- 1...Sd4
- 2.S3xd4#
- 2.Se3#
- 1...h4
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.S3d4#
- 2.S3xh4#
- 2.Se5#
- 2.Sg5#
- 1...Sc3!
- threat
- 1.Qg5?
- threat
- 2.Se3#
- 2.Sg3#
- 2.S5d4#
- 2.S5h4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Sg7#
- 1...Qc1+
- 2.Se3#
- 1...Qb4+
- 2.S5d4#
- 1...Be3+
- 2.Sxe3#
- 1...fxe6
- 2.Se3#
- 1...Qb2
- 2.Se3#
- 2.S5d4#
- 1...Qa1
- 2.Se3#
- 2.S5d4#
- 1...Rg6
- 2.Se3#
- 1...Rh7
- 2.Se3#
- 2.Sg3#
- 2.S5d4#
- 2.S5h4#
- 2.Sxd6#
- 2.Sh6#
- 2.Sg7#
- 1...Rh8
- 2.Se3#
- 2.Sg3#
- 2.S5d4#
- 2.S5h4#
- 2.Sxd6#
- 2.Sh6#
- 2.Sg7#
- 1...Bd4
- 2.Se3#
- 2.S5xd4#
- 1...Sd4
- 2.Se3#
- 2.S5xd4#
- 1...h4
- 2.Se3#
- 2.Sg3#
- 2.S5d4#
- 2.S5xh4#
- 2.Sxd6#
- 2.Sxh6#
- 2.Sg7#
- 1...Rxf6!
- threat
- 1.Qa8?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc7#
- 2.Rc8#
- 1...Qc1+
- 2.Rxc1#
- 1...Qb4+
- 2.Rc4#
- 1...Be3+
- 2.Sxe3#
- 1...Qc5
- 2.Rcxd6#
- 1...Rh8
- 2.Rc8#
- 1...Bc5
- 2.Ra6#
- 2.Rb6#
- 2.Rcxd6#
- 2.Rc7#
- 2.Rc8#
- 1...Bc7
- 2.Se3#
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rxc7#
- 1...Sc3
- 2.Rxc3#
- 2.Rc4#
- 2.Rc7#
- 2.Rc8#
- 1...Sd4
- 2.Se3#
- 1...Sc7
- 2.Rxc7#
- 1...Sa7!
- threat
- 1.Qg2?
- Keys
- 1.Qxf7!
- threat
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Re5#
- 2.Rexd6#
- 1...Qc1+
- 2.Re3#
- 1...Qb4+
- 2.Re4#
- 1...Be3+
- 2.Sxe3#
- 2.Rxe3#
- 1...Rxf6
- 2.Re5#
- 2.Rexd6#
- 2.Rxf6#
- 1...Rh7
- 2.Re5#
- 2.Rexd6#
- 1...Sd4
- 2.Se3#
- 2.Re5#
- 2.Rexd6#
- 1...Sc7
- 2.Re5#
- 2.Rexd6#
- threat
- 1.Qxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- B(g);CHECK,N_GUARD::S(D),XB(g)
- B(g);N_GUARD::S(D)
- S(d);S_CUTB(g)::S(D)
- P(j);OGATE,P_SPINP(j),XR(F)::QAB1(J),XP(j)
- Tries
- Try
- Q(J);
- Threat
- DUALS(8)
- Vars
- Q(a);CHECK::QAB(J)+S(B)
- B(g);CHECK,N_GUARD::S(D),XB(g)
- Q(a);::QAB(J)+S(B)
- R(i);::QAB(J)+S(B)
- Refutation
- S(d);
- Try
- Q(J);
- Threat
- DUALS(7)
- Vars
- Q(a);CHECK::QAR(J)+S(D),DCHECK
- Q(a);CHECK::QAR(J)+S(D)
- B(g);CHECK::QAR(J)+S(D),DCHECK,XB(g)
- P(j);XR(F)::QAR(J)+S(D),DCHECK
- R(i);::QAR(J)+S(D),DCHECK
- Refutation
- R(i);P_PINS(D),XP(G)
- Try
- Q(J);
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK::QAB(J)+R(E),XQ(a)
- Q(a);CHECK::QAB(J)+R(E)
- B(g);CHECK,N_GUARD::S(D),XB(g)
- Q(a);SBLOCK::QAB(J)+R(E),DCHECK,XP(h)
- R(i);::QAB(J)+R(E)
- S(d);S_CUTB(g)::S(D)
- S(d);::QAB(J)+R(E),XS(d)
- Refutation
- S(d);
- Try
- Actual
- Q(J);XP(j)
- Threat
- DUALS(6)
- Vars
- Q(a);CHECK::QAB(J)+R(F)
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).