MESON Chess Problem Database
Problem Display
PID: 259730 (2n1N3/4P1p1/2p5/p1Q1B3/Pn1Pk3/4Np2/3K1P2/8 w - - 0 1)
Yacoubian, Garen
Schweizerische Schachzeitung, 1970
#2
9 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qc2#
- 2.Qxc6#
- 1...Sc2
- 2.Qxc2#
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sd5
- 2.Qc2#
- 1...Sa6
- 2.Qc2#
- 2.Qxc6#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...Sxe7
- 2.Sd6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Sa2
- Tries
- 1.Bxg7?
- threat
- 2.Qe5#
- 2.Qf5#
- 1...Kf4
- 2.Qe5#
- 2.Qf5#
- 1...Sxe7
- 2.Qe5#
- 1...Sd3
- 2.Qf5#
- 1...Sd6
- 2.Qe5#
- 1...Sd5!
- threat
- 1.Qd6?
- threat
- 2.Qg6#
- 1...Sxd6
- 2.Sxd6#
- 1...g6
- 2.Sf6#
- 2.Qxg6#
- 1...Sxe7!
- threat
- 1.Qc1?
- 1...Sxe7
- 2.Sd6#
- 1...Sd5
- 2.Qb1#
- 2.Qc2#
- 1...Sa2
- 2.Qb1#
- 2.Qc2#
- 2.Qxc6#
- 1...Sc2
- 2.Qxc2#
- 1...Sd3
- 2.Qxc6#
- 1...Sa6
- 2.Qb1#
- 2.Qc2#
- 2.Qxc6#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...c5!
- 1...Sxe7
- 1.Qc2+?
- 1...Sd3
- 2.Qxd3#
- 2.Qxc6#
- 1...Sxc2!
- 1...Sd3
- 1.Qc3?
- 1...Sxe7
- 2.Sd6#
- 1...Sd5
- 2.Qc2#
- 2.Qd3#
- 1...Sa2
- 2.Qc2#
- 2.Qd3#
- 2.Qxc6#
- 1...Sc2
- 2.Qxc2#
- 2.Qd3#
- 2.Qxc6#
- 1...Sd3
- 2.Qxd3#
- 2.Qxc6#
- 1...Sa6
- 2.Qc2#
- 2.Qd3#
- 2.Qxc6#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...c5!
- 1...Sxe7
- 1.Qc4?
- 1...Sxe7
- 2.Sd6#
- 1...Sd5
- 2.Qd3#
- 2.Qc2#
- 1...Sa2
- 2.Qd3#
- 2.Qc2#
- 2.Qxc6#
- 1...Sc2
- 2.Qd3#
- 2.Qxc2#
- 2.Qxc6#
- 1...Sd3
- 2.Qxd3#
- 2.Qxc6#
- 1...Sa6
- 2.Qd3#
- 2.Qc2#
- 2.Qxc6#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...c5!
- 1...Sxe7
- 1.Qxc6+?
- 1...Sd5
- 2.Qxd5#
- 2.Qc2#
- 2.Qg6#
- 1...Sxc6!
- 1...Sd5
- 1.Bxg7?
- Keys
- 1.Qb6!
- 1...Sxb6
- 2.Sd6#
- 1...Sxe7
- 2.Sd6#
- 1...Sd5
- 2.Qb1#
- 1...Sa2
- 2.Qb1#
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 1...Sa6
- 2.Qb1#
- 2.Qxc6#
- 1...Sd6
- 2.Sxd6#
- 1...Sa7
- 2.Sd6#
- 1...c5
- 2.Qg6#
- 1...g5
- 2.Sf6#
- 1...g6
- 2.Sf6#
- 1...Sxb6
- 1.Qb6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAB(F),XP(e)
- S(b);N_GUARD::QAB(F)
- S(g);N_GUARD::S(I)
- S(g);N_GUARD::S(I),XS(g)
- S(g);N_GUARD,XP(H)::S(I)
- P(f);N_GUARD::S(I)
- Tries
- Try
- B(G);XP(f)
- Threat
- DUALS(2)
- Vars
- S(g);XP(H)::QAR1(F)
- S(b);::QAB1(F)
- S(g);::QAR1(F)
- Refutation
- S(b);
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- S(g);XQ(F)::S(I),XS(g)
- Refutation
- S(g);XP(H)
- Try
- Q(F);
- Vars
- S(g);N_GUARD,XP(H)::S(I)
- S(b);N_GUARD::QAB(F),XS(b)
- S(b);N_GUARD::QAB(F),XP(e)
- S(g);N_GUARD::S(I)
- S(g);N_GUARD::S(I),XS(g)
- P(f);N_GUARD::S(I)
- Refutation
- P(e);
- Try
- Q(F);CHECK
- Refutation
- S(b);XQ(F)
- Try
- Q(F);
- Vars
- S(g);N_GUARD,XP(H)::S(I)
- S(g);N_GUARD::S(I)
- S(g);N_GUARD::S(I),XS(g)
- P(f);N_GUARD::S(I)
- Refutation
- P(e);
- Try
- Q(F);
- Vars
- S(g);N_GUARD,XP(H)::S(I)
- S(g);N_GUARD::S(I)
- S(g);N_GUARD::S(I),XS(g)
- P(f);N_GUARD::S(I)
- Refutation
- P(e);
- Try
- Q(F);CHECK,XP(e)
- Refutation
- S(b);XQ(F)
- Try
- Actual
- Q(F);
- Vars
- S(g);N_GUARD,XQ(F)::S(I)
- S(g);N_GUARD,XP(H)::S(I)
- S(b);OGATE::QAB(F)
- S(b);N_GUARD::QAB(F),XP(e)
- S(g);N_GUARD::S(I),XS(g)
- S(g);N_GUARD::S(I)
- P(e);OGATE::QAB(F)
- P(f);N_GUARD::S(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).