MESON Chess Problem Database
Problem Display
PID: 214378 (8/Q3B3/n1p5/1p6/5N2/1Pk5/P3p1r1/2K1Nn2 w - - 0 1)
Valle, Giovanni Batista
100 Problemi di Scacchi, 1878
#2
7 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Sxe2#
- 1...Rg3
- 2.Sxe2#
- 1...Rg4
- 2.Sxe2#
- 1...Rg5
- 2.Sxe2#
- 1...Rg6
- 2.Sxe2#
- 1...Rg7
- 2.Sxe2#
- 1...Rg8
- 2.Sxe2#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...Sb4
- 2.Bf6#
- 2.Qc5#
- 1...Sc5
- 2.Qxc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...b4
- 2.Bf6#
- 1...Rg1
- Tries
- 1.Sfxg2?
- 1...Sc5
- 2.Qxc5#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 1...Sb4
- 2.Bf6#
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...b4
- 2.Bf6#
- 1...c5!
- 1...Sc5
- 1.Ba3?
- 1...Sc5
- 2.Qxc5#
- 1...Rg4
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rf2
- 2.Qg7#
- 1...Rh2
- 2.Qg7#
- 1...Rg3
- 2.Sxe2#
- 1...Rg5
- 2.Sxe2#
- 1...Rg6
- 2.Sxe2#
- 1...Rg7
- 2.Sxe2#
- 2.Qxg7#
- 1...Rg8
- 2.Sxe2#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 2.Qg7#
- 1...Sb4
- 2.Bb2#
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...b4
- 2.Bb2#
- 1...c5!
- 1...Sc5
- 1.Bb4+?
- 1...Sxb4
- 2.Qc5#
- 1...Kxb4!
- 1...Sxb4
- 1.Bd6?
- 1...Sc5
- 2.Qxc5#
- 1...Rg4
- 2.Sxe2#
- 1...Rg1
- 2.Sxe2#
- 1...Rf2
- 2.Qg7#
- 1...Rh2
- 2.Qg7#
- 1...Rg3
- 2.Sxe2#
- 1...Rg5
- 2.Sxe2#
- 1...Rg6
- 2.Sxe2#
- 1...Rg7
- 2.Sxe2#
- 2.Qxg7#
- 1...Rg8
- 2.Sxe2#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qe3#
- 2.Qg7#
- 1...Sb4
- 2.Be5#
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...b4
- 2.Be5#
- 1...c5!
- 1...Sc5
- 1.Qf2?
- threat
- 2.Sxe2#
- 1...Sc5
- 2.Qxc5#
- 1...c5
- 2.Sd5#
- 1...Sg3
- 2.Qe3#
- 1...Rxf2!
- threat
- 1.Sfxg2?
- Keys
- 1.Qg1!
- 1...Rxg1
- 2.Sxe2#
- 1...Rf2
- 2.Qg7#
- 1...Se3
- 2.Qxe3#
- 1...Sc5
- 2.Qxc5#
- 1...c5
- 2.Sd5#
- 1...Rg4
- 2.Sxe2#
- 1...Rh2
- 2.Qg7#
- 1...Rg3
- 2.Sxe2#
- 1...Rg5
- 2.Sxe2#
- 1...Rg6
- 2.Sxe2#
- 1...Rg7
- 2.Sxe2#
- 2.Qxg7#
- 1...Rg8
- 2.Sxe2#
- 1...Sd2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Sg3
- 2.Qe3#
- 1...Sb4
- 2.Bf6#
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...b4
- 2.Bf6#
- 1...Rxg1
- 1.Qg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::S(E),XP(b)
- S(a);N_GUARD::QAR2(F)
- S(a);N_GUARD::QAR2(F),XS(a)
- S(f);N_GUARD::QAR2(F),XS(f)
- S(f);N_GUARD::QAR2(F)
- P(e);SBLOCK::B(G)
- Tries
- Try
- S(E);XR(c)
- Vars
- S(f);N_GUARD::QAR2(F),XS(f)
- S(a);N_GUARD::QAR2(F)
- S(a);N_GUARD::QAR2(F),XS(a)
- S(f);N_GUARD::QAR2(F)
- P(e);SBLOCK::B(G)
- Refutation
- P(g);
- Try
- B(G);
- Vars
- S(f);N_GUARD::QAR2(F),XS(f)
- R(c);N_GUARD::S(E),XP(b)
- R(c);N_GUARD::QAB(F)
- S(a);N_GUARD::QAR2(F)
- S(a);N_GUARD::QAR2(F),XS(a)
- S(f);N_GUARD::QAR2(F)
- P(e);SBLOCK::B(G)
- Refutation
- P(g);
- Try
- B(G);CHECK
- Vars
- S(f);XB(G)::QAR2(F)
- Refutation
- K(d);S_FLIGHT,XB(G)
- Try
- B(G);
- Vars
- S(f);N_GUARD::QAR2(F),XS(f)
- R(c);N_GUARD::S(E),XP(b)
- R(c);N_GUARD::QAB(F)
- S(a);N_GUARD::QAR2(F)
- S(a);N_GUARD::QAR2(F),XS(a)
- S(f);N_GUARD::QAR2(F)
- P(e);SBLOCK::B(G)
- Refutation
- P(g);
- Try
- Q(F);
- Threat
- S(E),XP(b)
- Vars
- S(f);N_GUARD::QAR2(F),XS(f)
- P(g);N_GUARD::S(E)
- S(a);N_GUARD::QAR2(F)
- Refutation
- R(c);XQ(F)
- Try
- Actual
- Q(F);
- Vars
- R(c);N_GUARD,XQ(F)::S(E),XP(b)
- R(c);OGATE::QAB(F)
- S(a);N_GUARD::QAR2(F),XS(a)
- S(f);N_GUARD::QAR2(F),XS(f)
- P(g);N_GUARD::S(E)
- R(c);N_GUARD::S(E),XP(b)
- S(a);N_GUARD::QAR2(F)
- S(f);N_GUARD::QAR2(F)
- P(e);SBLOCK::B(G)
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).