MESON Chess Problem Database
Problem Display
PID: 260174 (b3Rb2/8/2n5/1Nn1pp2/1p2k3/3N2P1/B3PK2/3R4 w - - 0 1)
Pirrone, Santi
Comm., The Problemist, 1963
#2
8 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bh6
- 2.Sxc5#
- 1...Bg7
- 2.Sxc5#
- 1...Sxd3+
- 2.exd3#
- 1...Sd4
- 2.Rxe5#
- 1...Sa5
- 2.Rxe5#
- 1...Sa7
- 2.Rxe5#
- 1...Se7
- 2.Sxc5#
- 1...Sb8
- 2.Rxe5#
- 1...Sd8
- 2.Rxe5#
- 1...Bh6
- Tries
- 1.Sc1?
- threat
- 2.Bd5#
- 1...Sd3+
- 2.exd3#
- 1...Sb3
- 2.Bb1#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...Se7
- 2.Sd6#
- 1...Sb8
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...b3
- 2.Sc3#
- 1...f4!
- threat
- 1.Se1?
- threat
- 2.Bd5#
- 1...Sd3+
- 2.exd3#
- 1...Sb3
- 2.Bb1#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...Se7
- 2.Sd6#
- 1...Sb8
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...b3
- 2.Sc3#
- 1...f4!
- threat
- 1.Sb2?
- threat
- 2.Bd5#
- 1...Sd3+
- 2.exd3#
- 1...Sb3
- 2.Bb1#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...Se7
- 2.Sd6#
- 1...Sb8
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...b3
- 2.Sc3#
- 1...f4!
- threat
- 1.Sxb4?
- threat
- 2.Sc3#
- 2.Bd5#
- 1...Sd3+
- 2.exd3#
- 1...Sxb4
- 2.Sc3#
- 2.Rd4#
- 1...Sb3
- 2.Sc3#
- 2.Bb1#
- 1...Sa4
- 2.Bb1#
- 2.Bd5#
- 1...Sd4
- 2.Sc3#
- 2.Rxd4#
- 1...Sa5
- 2.Sc3#
- 2.Rd4#
- 1...Sa7
- 2.Sc3#
- 2.Rd4#
- 1...Se7
- 2.Sc3#
- 2.Sd6#
- 1...Sb8
- 2.Sc3#
- 2.Rd4#
- 1...Sd8
- 2.Sc3#
- 2.Rd4#
- 1...f4!
- threat
- 1.Sc1?
- Keys
- 1.Sf4!
- threat
- 2.Bd5#
- 1...Sd3+
- 2.exd3#
- 1...Sb3
- 2.Bb1#
- 1...Sd4
- 2.Rxd4#
- 1...Sa5
- 2.Rd4#
- 1...Sa7
- 2.Rd4#
- 1...Se7
- 2.Sd6#
- 1...Sb8
- 2.Rd4#
- 1...Sd8
- 2.Rd4#
- 1...b3
- 2.Sc3#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- B(h);N_GUARD::S(E),XS(c)
- S(c);CHECK,OGATE,XS(E)::P(C),XS(c)
- S(f);N_GUARD::R1(H),XP(d)
- S(f);N_SPINP(d),S_CUTB(h)::S(E),XS(c)
- Tries
- Try
- S(E);
- Threat
- B(B)
- Vars
- S(c);CHECK,OGATE::P(C),XS(c)
- S(c);N_GUARD::B(B)
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(f);N_SPINP(d),S_CUTB(h)::S(G)
- P(a);N_GUARD::S(G)
- Refutation
- P(e);
- Try
- S(E);
- Threat
- B(B)
- Vars
- S(c);CHECK,OGATE::P(C),XS(c)
- S(c);N_GUARD::B(B)
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(f);N_SPINP(d),S_CUTB(h)::S(G)
- P(a);N_GUARD::S(G)
- Refutation
- P(e);
- Try
- S(E);
- Threat
- B(B)
- Vars
- S(c);CHECK,OGATE::P(C),XS(c)
- S(c);N_GUARD::B(B)
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(f);N_SPINP(d),S_CUTB(h)::S(G)
- P(a);N_GUARD::S(G)
- Refutation
- P(e);
- Try
- S(E);XP(a)
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,OGATE::P(C),XS(c)
- Refutation
- P(e);
- Try
- Actual
- S(E);
- Threat
- B(B)
- Vars
- S(c);CHECK,OGATE::P(C),XS(c)
- S(c);N_GUARD::B(B)
- S(f);N_GUARD::R1(A),XS(f)
- S(f);N_GUARD::R1(A)
- S(f);N_SPINP(d),S_CUTB(h)::S(G)
- P(a);N_GUARD::S(G)
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).