MESON Chess Problem Database
Problem Display
PID: 201487 (8/1B1p4/1K1p4/P1p4p/1pk3nr/4p2p/R6P/B1N1nN2 w - - 0 1)
Pasqualini, Giulio
L'Alfiere di Re, 1922
#2
8 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Sxh2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...b3
- 2.Ra4#
- 1...d5
- 2.Ba6#
- 1...Sc2
- Tries
- 1.Ka6?
- 1...Sxh2
- 2.Sxe3#
- 1...b3
- 2.Ra4#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...d5!
- 1...Sxh2
- 1.Be4?
- 1...Sxh2
- 2.Sxe3#
- 1...b3
- 2.Ra4#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...d5!
- 1...Sxh2
- 1.Bc6?
- 1...Sxh2
- 2.Sxe3#
- 1...b3
- 2.Ra4#
- 1...d5
- 2.Bb5#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...dxc6!
- 1...Sxh2
- 1.Ba8?
- 1...Sxh2
- 2.Sxe3#
- 1...b3
- 2.Ra4#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...d5!
- 1...Sxh2
- 1.Rd2?
- threat
- 2.Bd5#
- 2.Ba6#
- 1...exd2
- 2.Sxd2#
- 1...d5
- 2.Bxd5#
- 2.Ba6#
- 1...Sd3
- 2.Rc2#
- 1...Sf6
- 2.Sxe3#
- 2.Ba6#
- 1...b3!
- threat
- 1.Re2?
- 1...Sxh2
- 2.Sxe3#
- 1...d5
- 2.Ba6#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...b3!
- 1...Sxh2
- 1.a6?
- 1...Sxh2
- 2.Sxe3#
- 1...b3
- 2.Ra4#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Sf2
- 2.Sxe3#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- 1...e2
- 2.Sd2#
- 1...d5!
- 1...Sxh2
- 1.Ka6?
- Keys
- 1.Rf2!
- threat
- 2.Rf4#
- 1...Sxf2
- 2.Sxe3#
- 1...Sxh2
- 2.Sxe3#
- 1...exf2
- 2.Sd2#
- 1...d5
- 2.Ba6#
- 1...Sc2
- 2.Rxc2#
- 1...Sg2
- 2.Rc2#
- 1...Sd3
- 2.Rc2#
- 1...Sf3
- 2.Rc2#
- 1...Se5
- 2.Sxe3#
- 1...Sf6
- 2.Sxe3#
- 1...Sh6
- 2.Sxe3#
- threat
- 1.Rf2!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(b);N_GUARD::S(C)
- P(d);OGATEB::R(D)
- P(j);SBLOCK::B(H)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(d);OGATEB::R(D)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(j);
- Try
- B(H);
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(d);OGATEB::R(D)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(j);
- Try
- B(H);
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(d);OGATEB::R(D)
- P(j);SBLOCK::B(H)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(k);XB(H)
- Try
- B(H);
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(d);OGATEB::R(D)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(j);
- Try
- R(D);
- Threat
- DUALS(2)
- Vars
- P(b);XR(D)::S(C),XP(b)
- S(a);N_GUARD::R(D)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(j);SBLOCK::B(H)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- Refutation
- P(d);
- Try
- P(F);
- Vars
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(d);OGATEB::R(D)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(j);
- Try
- Actual
- R(D);
- Threat
- R(D)
- Vars
- S(f);N_GUARD,XR(D)::S(C),XP(b)
- S(f);N_GUARD,XP(E)::S(C),XP(b)
- P(b);N_GUARD,XR(D)::S(C)
- P(j);SBLOCK::B(H)
- S(a);N_GUARD::R(D),XS(a)
- S(a);N_GUARD::R(D)
- S(f);N_GUARD::S(C),XP(b)
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).