MESON Chess Problem Database
Problem Display
PID: 207456 (r1n3b1/3B4/R1r3N1/3k4/2pP4/2P2P2/4N2B/4KQ2 w - - 0 1)
Cristoffanini, Guido
Il Problema, 1931
#2
10 + 6
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rc5
- 2.Sef4#
- 2.Sgf4#
- 1...Rd6
- 2.Sef4#
- 2.Sgf4#
- 1...Re6
- 2.Sf4#
- 1...Rxg6
- 2.Sf4#
- 1...Rc7
- 2.Sef4#
- 2.Sgf4#
- 1...Be6
- 2.Bxc6#
- 1...Sb6
- 2.Se7#
- 1...Sd6
- 2.Sef4#
- 2.Sgf4#
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rc5
- Tries
- 1.Be5?
- threat
- 2.Sef4#
- 2.Sgf4#
- 1...Rxg6
- 2.Sf4#
- 1...Rf6!
- threat
- 1.Bc7?
- threat
- 2.Sef4#
- 2.Sgf4#
- 1...Rxg6
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Rf6!
- threat
- 1.Ra5+?
- 1...Rc5
- 2.Rxc5#
- 1...Rxa5!
- 1...Rc5
- 1.Rxc6?
- threat
- 2.Sef4#
- 2.Sgf4#
- 2.Rc5#
- 1...Ra5
- 2.Sef4#
- 2.Sgf4#
- 1...Ra1+!
- threat
- 1.Qh3?
- threat
- 2.Bxc6#
- 2.Qf5#
- 2.Qh5#
- 1...Rcxa6
- 2.Qf5#
- 2.Qh5#
- 1...Rxg6
- 2.Sf4#
- 2.Qf5#
- 1...Raxa6
- 2.Qf5#
- 2.Qh5#
- 1...Rc5
- 2.Sef4#
- 2.Sgf4#
- 2.Qf5#
- 2.Qh5#
- 1...Rb6
- 2.Qf5#
- 2.Qh5#
- 1...Rd6
- 2.Sef4#
- 2.Sgf4#
- 2.Qf5#
- 2.Qh5#
- 1...Re6
- 2.Sf4#
- 1...Rc7
- 2.Sef4#
- 2.Sgf4#
- 2.Qf5#
- 2.Qh5#
- 1...Be6
- 2.Bxc6#
- 1...Sb6
- 2.Se7#
- 2.Qf5#
- 2.Qh5#
- 1...Sd6
- 2.Sef4#
- 2.Sgf4#
- 2.Se7#
- 2.Bxc6#
- 1...Sa7
- 2.Se7#
- 2.Qf5#
- 2.Qh5#
- 1...Se7
- 2.Sxe7#
- 1...Rf6!
- threat
- 1.Qg1?
- threat
- 2.Qg5#
- 1...Rxg6
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Be6
- 2.Bxc6#
- 1...Sd6
- 2.Sef4#
- 2.Sgf4#
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rf6!
- threat
- 1.Be5?
- Keys
- 1.Qg2!
- threat
- 2.Qg5#
- 1...Rxg6
- 2.Sf4#
- 1...Rf6
- 2.f4#
- 1...Re6
- 2.Sf4#
- 1...Be6
- 2.Bxc6#
- 1...Sd6
- 2.Sef4#
- 2.Sgf4#
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- threat
- 1.Qg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- R(c);P_PINS(C)::S(I)
- R(c);XS(I)::S(C)
- B(f);SBLOCK::B(J),XR(c)
- S(e);N_GUARD::S(I)
- S(e);N_GUARD::S(I),XS(e)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(c);XS(I)::S(C)
- Refutation
- R(c);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- R(c);XS(I)::S(C)
- R(c);P_PINS(C)::S(I)
- Refutation
- R(c);
- Try
- R(H);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::R1(H),XR(c)
- Refutation
- R(d);XR(H)
- Try
- R(H);XR(c)
- Threat
- DUALS(3)
- Refutation
- R(d);CHECK
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(c);P_PINS(C)::S(I)
- B(f);::B(J),XR(c)
- S(e);N_GUARD::S(I),XS(e)
- Refutation
- R(c);
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- R(c);XS(I)::S(C)
- R(c);P_PINS(C)::S(I)
- B(f);SBLOCK::B(J),XR(c)
- S(e);N_GUARD::S(I),XS(e)
- Refutation
- R(c);
- Try
- Actual
- Q(B);
- Threat
- QAR(B)
- Vars
- R(c);XS(I)::S(C)
- R(c);::QAB(B)+P(F)
- R(c);P_PINS(C)::S(I)
- B(f);SBLOCK::B(J),XR(c)
- S(e);N_GUARD::S(I),XS(e)
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).