MESON Chess Problem Database
Problem Display
PID: 223023 (3B4/N2p2N1/3k1p2/1Rn1nR2/2p1p3/8/B4PQ1/7K w - - 0 1)
Mackenzie, Arthur Ford
3rd Prize, Nuova Rivista degli Scacchi, 1885
#2
9 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sf3
- 2.Rb6#
- 1...Sg4
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...e3
- 2.Sc8#
- 1...Sb3
- Tries
- 1.Rxc5?
- 1...Sd3
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...Sf3
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...Sg4
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...Sc6
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...Sg6
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...Sf7
- 2.Sb5#
- 2.Sc8#
- 2.Rcd5#
- 2.Rfd5#
- 1...c3
- 2.Rd5#
- 1...e3
- 2.Rd5#
- 2.Qd5#
- 1...Kxc5!
- 1...Sd3
- 1.Rb6+?
- 1...Sc6
- 2.Sb5#
- 2.Sc8#
- 2.Qh2#
- 2.Qg3#
- 1...Kd5!
- 1...Sc6
- 1.Rxf6+?
- 1...Se6
- 2.Sf5#
- 2.Se8#
- 1...Kd5!
- 1...Se6
- 1.Qf1?
- 1...Kd5
- 2.Qd1#
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sf3
- 2.Rb6#
- 1...Sg4
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...e3!
- 1...Kd5
- 1.Qf3?
- 1...Kd5
- 2.Qd1#
- 1...Sxf3
- 2.Rb6#
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sg4
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...e3
- 2.Sc8#
- 1...exf3!
- 1...Kd5
- 1.Qxe4?
- threat
- 2.Sc8#
- 2.Qd4#
- 1...Sb3
- 2.Sc8#
- 2.Rd5#
- 2.Rxf6#
- 2.Qd5#
- 1...Se6
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 2.Qd5#
- 1...Sf3
- 2.Sc8#
- 2.Se8#
- 2.Rb6#
- 2.Rd5#
- 2.Qd5#
- 2.Qe7#
- 1...Sc6
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 2.Qd5#
- 1...Sxe4!
- threat
- 1.Qg1?
- 1...Kd5
- 2.Qd1#
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sf3
- 2.Rb6#
- 1...Sg4
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...e3!
- 1...Kd5
- 1.f4?
- 1...Kd5
- 2.Qd2#
- 1...e3
- 2.Sc8#
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sf3
- 2.Rb6#
- 1...Sg4
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...exf4 ep!
- 1...Kd5
- 1.Rxc5?
- Keys
- 1.Qg4!
- 1...Kd5
- 2.Qd1#
- 1...Sxg4
- 2.Rb6#
- 1...e3
- 2.Qd4#
- 1...Sb3
- 2.Rxf6#
- 1...Scd3
- 2.Rxf6#
- 1...Sa4
- 2.Rxf6#
- 1...Sa6
- 2.Rxf6#
- 1...Se6
- 2.Se8#
- 1...Sb7
- 2.Rxf6#
- 1...Sed3
- 2.Rb6#
- 1...Sf3
- 2.Rb6#
- 1...Sc6
- 2.Sc8#
- 1...Sg6
- 2.Rb6#
- 1...Sf7
- 2.Rb6#
- 1...c3
- 2.Se8#
- 1...Kd5
- 1.Qg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(H)
- P(b);::S(G)
- Tries
- Try
- R(E);XS(c)
- Vars
- P(a);::R1(E)
- Refutation
- K(e);P_SPINS(d),S_FLIGHT,XR(E)
- Try
- R(E);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(d)
- Try
- R(F);CHECK,XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)
- Try
- Q(D);
- Vars
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)::QAR(D)
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(H)
- Refutation
- P(b);
- Try
- Q(D);
- Vars
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)::QAR(D)
- S(d);N_GUARD,XQ(D)::R(E)
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(H)
- P(b);::S(G)
- Refutation
- P(b);XQ(D)
- Try
- Q(D);XP(b)
- Threat
- DUALS(2)
- Refutation
- S(c);XQ(D)
- Try
- Q(D);
- Vars
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)::QAR(D)
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(H)
- Refutation
- P(b);
- Try
- P(C);
- Vars
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)::QAR(D)
- P(b);::S(G)
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(H)
- Refutation
- P(b);EP,XP(C)
- Try
- Actual
- Q(D);
- Vars
- K(e);P-FLIGHT,P_SPINP(a),P_SPINS(c)::QAR(D)
- S(d);N_GUARD,XQ(D)::R(E)
- P(b);OGATE::QAR2(D)
- S(c);N_GUARD::R(F),XP(f)
- S(c);SBLOCK::S(H)
- S(d);N_GUARD::R(E)
- S(d);SBLOCK::S(G)
- P(a);::S(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).