MESON Chess Problem Database
Problem Display
PID: 242388 (6bK/2r4p/3N4/1Q6/2pk4/6R1/2R1Pn1N/b4r2 w - - 0 1)
Morra, Juan Carlos
Deutsche Schachzeitung, 1965
#2
7 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf7
- 2.Rxc4#
- 1...Sd1
- 2.Rd2#
- 1...Sh1
- 2.Rd2#
- 1...Sd3
- 2.e3#
- 1...Sh3
- 2.Rd2#
- 1...Sg4
- 2.Rd2#
- 1...c3
- 2.e3#
- 1...Rf7
- Tries
- 1.Qf5?
- threat
- 2.Sb5#
- 2.e3#
- 1...Rb1
- 2.e3#
- 1...Re1
- 2.Sb5#
- 1...Rc5
- 2.e3#
- 1...Rb7
- 2.e3#
- 1...Re7
- 2.Sb5#
- 1...Sd1
- 2.Sb5#
- 2.Rd2#
- 1...Se4
- 2.Sb5#
- 1...Sg4
- 2.Sb5#
- 2.Rd2#
- 1...c3
- 2.e3#
- 1...Bd5!
- threat
- 1.Qf5?
- Keys
- 1.Qg5!
- threat
- 2.Sf3#
- 1...Bd5
- 2.Qe3#
- 1...Rf7
- 2.Rxc4#
- 1...Sd1
- 2.Rd2#
- 1...Sh1
- 2.Rd2#
- 1...Sd3
- 2.e3#
- 1...Sh3
- 2.Rd2#
- 1...Se4
- 2.Sb5#
- 1...Sg4
- 2.Rd2#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(f);N_GUARD,S_CUTB(h)::R1(A),XP(d)
- S(c);N_GUARD::R(A)
- S(c);SBLOCK::P(B)
- P(d);::P(B)
- Tries
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(b);::P(B)
- R(b);::S(F)
- R(f);::P(B)
- R(f);::S(F)
- S(c);::S(F)
- P(d);::P(B)
- Refutation
- B(h);
- Try
- Actual
- Q(E);
- Threat
- S(C)
- Vars
- B(h);SBLOCK::QAB1(E)
- R(f);N_GUARD,S_CUTB(h)::R1(A),XP(d)
- S(c);N_GUARD::R(A)
- S(c);SBLOCK::P(B)
- S(c);SBLOCK::S(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).