MESON Chess Problem Database
Problem Display
PID: 234047 (b1Q5/4bp2/p3R1R1/3k1P2/2pNnr2/2p2r2/4NBB1/4K1n1 w - - 0 1)
Ricciardi, Aldechi
Il Due Mosse, 1953
#2
9 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd3
- 2.Sxf4#
- 1...Rg3
- 2.Sxf4#
- 1...Rh3
- 2.Sxf4#
- 1...Bc5
- 2.Qxa8#
- 1...Bc6
- 2.Qxc6#
- 1...Sd2
- 2.Sxc3#
- 2.Sxf4#
- 1...Sg3
- 2.Sxc3#
- 2.Sxf4#
- 1...Sc5
- 2.Sxc3#
- 2.Sxf4#
- 1...Sg5
- 2.Sxc3#
- 2.Sxf4#
- 1...Sd6
- 2.Sxc3#
- 2.Sxf4#
- 1...Sf6
- 2.Sxc3#
- 2.Sxf4#
- 1...Rd3
- Tries
- 1.Sb3?
- threat
- 2.Qxa8#
- 1...fxe6
- 2.Qxe6#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sc5
- 2.Sxc3#
- 2.Sxf4#
- 1...Sd6
- 2.Sxc3#
- 2.Sxf4#
- 2.Qc5#
- 1...cxb3!
- threat
- 1.Sxf3?
- threat
- 2.Sxf4#
- 2.Re5#
- 2.Qxa8#
- 1...Rxf3
- 2.Qxa8#
- 1...Rxf5
- 2.Qxa8#
- 1...Sxe2
- 2.Re5#
- 2.Qxa8#
- 1...Sxf2
- 2.Sxc3#
- 2.Sxf4#
- 2.Re5#
- 1...fxe6
- 2.Qxe6#
- 1...fxg6
- 2.Sxf4#
- 2.Qxa8#
- 1...Rg4
- 2.Re5#
- 2.Qxa8#
- 1...Rh4
- 2.Re5#
- 2.Qxa8#
- 1...Bg5
- 2.Re5#
- 2.Qxa8#
- 1...Bd6
- 2.Qxa8#
- 1...Bf6
- 2.Sxf4#
- 2.Qxa8#
- 1...Bc6
- 2.Sxf4#
- 2.Re5#
- 2.Qxc6#
- 1...Bb7
- 2.Sxf4#
- 2.Re5#
- 2.Qxb7#
- 1...Sh3
- 2.Re5#
- 2.Qxa8#
- 1...Sc5
- 2.Sxc3#
- 2.Sxf4#
- 2.Re5#
- 1...Sd6
- 2.Sxc3#
- 2.Sxf4#
- 2.Re5#
- 2.Qc5#
- 1...Sf6
- 2.Sxc3#
- 2.Sxf4#
- 2.Qxa8#
- 1...f6
- 2.Sxf4#
- 2.Qxa8#
- 1...Sxf3+!
- threat
- 1.Sb5?
- threat
- 2.Sc7#
- 2.Qxa8#
- 1...Rxf2
- 2.Sexc3#
- 2.Sbxc3#
- 1...Sxf2
- 2.Sexc3#
- 2.Sxf4#
- 2.Sbxc3#
- 1...axb5
- 2.Qxa8#
- 1...fxe6
- 2.Qxe6#
- 1...Bd6
- 2.Qxa8#
- 1...Bd8
- 2.Qxa8#
- 1...Bc6
- 2.Sc7#
- 2.Qxc6#
- 1...Bb7
- 2.Sc7#
- 2.Qxb7#
- 1...Sc5
- 2.Sexc3#
- 2.Sxf4#
- 2.Sbxc3#
- 2.Sc7#
- 1...Sd6
- 2.Sexc3#
- 2.Sxf4#
- 2.Sbxc3#
- 2.Qc5#
- 1...Re3!
- threat
- 1.Sc6?
- threat
- 2.Sxe7#
- 2.Re5#
- 1...Rxf5
- 2.Sxe7#
- 1...Bxc6
- 2.Qxc6#
- 1...fxe6
- 2.Qxe6#
- 1...fxg6
- 2.Sxe7#
- 1...Ba3
- 2.Re5#
- 1...Bb4
- 2.Sxb4#
- 2.Re5#
- 1...Bh4
- 2.Sb4#
- 2.Re5#
- 1...Bc5
- 2.Re5#
- 1...Bg5
- 2.Sb4#
- 2.Re5#
- 1...Bf6
- 2.Sb4#
- 1...Bd8
- 2.Sb4#
- 2.Re5#
- 1...Bf8
- 2.Re5#
- 1...Sf6
- 2.Sxc3#
- 2.Sxf4#
- 2.Sxe7#
- 1...f6
- 2.Sxe7#
- 1...Bd6!
- threat
- 1.Qb7+?
- 1...Kc5
- 2.Sb3#
- 2.Re5#
- 1...Bxb7!
- 1...Kc5
- 1.Sb3?
- Keys
- 1.Sc2!
- threat
- 2.Qxa8#
- 1...Rxf2
- 2.Se3#
- 2.Sxc3#
- 1...Sxf2
- 2.Se3#
- 2.Sxc3#
- 2.Sxf4#
- 1...fxe6
- 2.Qxe6#
- 1...Re3
- 2.Sxe3#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sc5
- 2.Se3#
- 2.Sb4#
- 2.Sxc3#
- 2.Sxf4#
- 1...Sd6
- 2.Se3#
- 2.Sb4#
- 2.Sxc3#
- 2.Sxf4#
- 2.Qc5#
- threat
- 1.Sc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(c);N_GUARD,P_SPINS(e)::S(B),XR(f)
- B(i);SBLOCK::QAB(I),XB(k)
- B(k);N_GUARD::QAB1(I),XB(k)
- Tries
- Try
- S(E);
- Threat
- QAB(I),XB(k)
- Vars
- P(j);OGATE,XR(G)::QAB1(I),XP(j)
- B(k);N_GUARD::QAB1(I),XB(k)
- B(k);N_GUARD::QAB(I),XB(k)
- Refutation
- P(d);XS(E)
- Try
- S(E);XR(c)
- Threat
- DUALS(3)
- Vars
- R(f);XS(E)::QAB(I),XB(k)
- R(f);XP(F)::QAB(I),XB(k)
- P(j);OGATE,XR(G)::QAB1(I),XP(j)
- B(i);::QAB(I),XB(k)
- Refutation
- S(a);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(h);XS(E)::QAB(I),XB(k)
- P(j);OGATE,XR(G)::QAB1(I),XP(j)
- B(i);::QAB(I),XB(k)
- Refutation
- R(c);P_PINS(B),P_SPINS(e)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(f);XP(F)::S(E),XB(i)
- B(k);OGATE,XS(E)::QAB1(I),XB(k)
- P(j);OGATE,XR(G)::QAB1(I),XP(j)
- P(j);XR(H)::S(E),XB(i)
- B(i);::R1(G)
- B(i);N_GUARD::S(E)
- P(j);::S(E),XB(i)
- Refutation
- B(i);
- Try
- Q(I);CHECK
- Refutation
- B(k);XQ(I)
- Try
- Actual
- S(E);
- Threat
- QAB(I),XB(k)
- Vars
- P(j);OGATE,XR(G)::QAB1(I),XP(j)
- R(c);N_GUARD,P_PINS(B),P_SPINS(e)::S(E),XR(c)
- B(k);N_GUARD::QAB1(I),XB(k)
- B(k);N_GUARD::QAB(I),XB(k)
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).