MESON Chess Problem Database
Problem Display
PID: 259371 (Rr6/RB1Q3p/P4k2/q3p2K/1r2p3/p1N5/8/8 w - - 0 1)
Pirrone, Santi
Scacchi e Scienze Applicate, 1993
#2
7 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qb6
- 2.Sd5#
- 1...Qc7
- 2.Sd5#
- 1...Qd8
- 2.Sd5#
- 1...Qa4
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Qxa6
- 2.Sd5#
- 1...Rb1
- 2.Sxe4#
- 1...Rb2
- 2.Sxe4#
- 1...Rb3
- 2.Sxe4#
- 1...Rb5
- 2.Sxe4#
- 1...Rb6
- 2.Sxe4#
- 1...R4xb7
- 2.Sxe4#
- 1...R8xb7
- 2.Rf8#
- 1...Rf8
- 2.Rxf8#
- 1...Qb6
- Tries
- 1.Bxe4?
- threat
- 2.Qf5#
- 2.Qc6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 1...Qxa6
- 2.Sd5#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...Rxe4
- 2.Sxe4#
- 2.Qf7#
- 1...Qb6
- 2.Sd5#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...Qc7
- 2.Sd5#
- 1...Qd8
- 2.Sd5#
- 2.Qf5#
- 2.Qf7#
- 1...Qa4
- 2.Sd5#
- 2.Qf5#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 1...Qb5
- 2.Qf5#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 1...Qc5
- 2.Qf5#
- 2.Qf7#
- 1...Qd5
- 2.Sxd5#
- 2.Qf5#
- 2.Qe7#
- 1...Rc4
- 2.Qf5#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 1...Rd4
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...R4b6
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...R8b6
- 2.Rf8#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...R8b7
- 2.Rf8#
- 1...Rc8
- 2.Qf5#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 1...Rd8
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 1...Re8
- 2.Qf5#
- 2.Qf7#
- 1...Rf8
- 2.Rxf8#
- 2.Qf5#
- 2.Qc6#
- 2.Qd6#
- 2.Qe7#
- 1...R4b7!
- threat
- 1.Bd5?
- threat
- 2.Qe6#
- 2.Qf7#
- 1...Qxd5
- 2.Sxd5#
- 1...Qxa6
- 2.Qf7#
- 1...Qb6
- 2.Qf7#
- 1...R4b6
- 2.Sxe4#
- 2.Qf7#
- 1...R4b7
- 2.Sxe4#
- 1...R8b6
- 2.Rf8#
- 2.Qf7#
- 1...R8b7
- 2.Rf8#
- 1...Re8
- 2.Qf7#
- 1...Rf8
- 2.Rxf8#
- 2.Qe6#
- 1...Qc7!
- threat
- 1.Bc8?
- threat
- 2.Qf5#
- 2.Qc6#
- 2.Qe6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 1...Qxa6
- 2.Sd5#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 2.Qd8#
- 1...Rxc8
- 2.Qf7#
- 1...Qb6
- 2.Sd5#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 1...Qc7
- 2.Sd5#
- 1...Qd8
- 2.Sd5#
- 2.Qf5#
- 2.Qe6#
- 2.Qf7#
- 2.Qg7#
- 2.Qxd8#
- 1...Qa4
- 2.Sd5#
- 2.Qf5#
- 2.Qe6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 2.Qd8#
- 1...Qb5
- 2.Qf5#
- 2.Qe6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 2.Qd8#
- 1...Qc5
- 2.Qf5#
- 2.Qe6#
- 2.Qf7#
- 2.Qg7#
- 1...Qd5
- 2.Sxd5#
- 2.Qf5#
- 2.Qe7#
- 2.Qg7#
- 1...Rc4
- 2.Qf5#
- 2.Qe6#
- 2.Qd6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 1...Rd4
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 1...R4b6
- 2.Sxe4#
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 2.Qd8#
- 1...R4b7
- 2.Sxe4#
- 1...R8b6
- 2.Qf5#
- 2.Qe7#
- 2.Qf7#
- 2.Qg7#
- 2.Qd8#
- 1...R8b7!
- threat
- 1.Rxb8?
- threat
- 2.Rf8#
- 1...Qd8
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...Qc5!
- threat
- 1.Qe7+?
- 1...Kf5
- 2.Qf7#
- 1...Kxe7!
- 1...Kf5
- 1.Bxe4?
- Keys
- 1.Bc6!
- threat
- 2.Qf7#
- 1...Qc7
- 2.Sd5#
- 1...Qd5
- 2.Sxd5#
- 1...R4b7
- 2.Sxe4#
- 1...R8b7
- 2.Rf8#
- 1...Rf8
- 2.Rxf8#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(d);N_GUARD::S(A)
- Q(d);N_GUARD::S(A),XQ(d)
- Q(d);N_GUARD,XP(C)::S(A)
- R(b);N_GUARD::S(A),XP(c)
- R(b);N_GUARD,XB(E)::S(A),XP(c)
- R(h);OGATE,XB(E)::R(G)
- R(h);OGATE::R(G),XR(h)
- Tries
- Try
- B(E);XP(c)
- Threat
- DUALS(5)
- Vars
- Q(d);N_GUARD::S(A)
- R(h);OGATE::R(G)
- Refutation
- R(b);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- Q(d);XB(E)::S(A),XQ(d)
- Q(d);XP(C)::QAR1(F)
- Q(d);::QAR1(F)
- R(b);N_GUARD::S(A),XP(c)
- R(h);OGATE::R(G)
- R(h);::QAR1(F)
- Refutation
- Q(d);
- Try
- B(E);
- Threat
- DUALS(7)
- Vars
- R(h);XB(E)::QAR1(F)
- Q(d);N_GUARD::S(A)
- R(b);N_GUARD::S(A),XP(c)
- Refutation
- R(h);
- Try
- R(G);XR(h)
- Threat
- R(G)
- Vars
- Q(d);N_GUARD::S(A)
- Q(d);N_GUARD::S(A),XQ(d)
- Refutation
- Q(d);
- Try
- Q(F);CHECK
- Vars
- K(f);N_GUARD,P-FLIGHT::QAR2(F)
- Refutation
- K(f);S_FLIGHT,XQ(F)
- Try
- Actual
- B(E);
- Threat
- QAR1(F)
- Vars
- Q(d);N_GUARD::S(A)
- Q(d);N_GUARD::S(A),XQ(d)
- R(b);N_GUARD::S(A),XP(c)
- R(h);OGATE::R(G)
- R(h);OGATE::R(G),XR(h)
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).