MESON Chess Problem Database
Problem Display
PID: 46466 (3R4/1PP1p3/KQ3N2/3Pkqr1/4NR2/p6B/5P2/2B5 w - - 0 1)
Michel, Francois
2nd Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1960
#2
12 + 5
| 3749 | FIDE Album (1959-1961) | 1966 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4
- 2.Rxe4#
- 1...Rg1
- 2.Rxf5#
- 1...Rg2
- 2.Rxf5#
- 1...Rg3
- 2.Rxf5#
- 1...Rg6
- 2.Rxf5#
- 1...Rg7
- 2.Rxf5#
- 1...Rg8
- 2.Rxf5#
- 1...a2
- 2.Qb2#
- 1...Qxe4
- Tries
- 1.Sc3?
- threat
- 2.Qd4#
- 1...Qxf4
- 2.Sd7#
- 1...Qxf6
- 2.Re4#
- 1...Qe4
- 2.Sd7#
- 2.Rxe4#
- 1...Qe6
- 2.Qxe6#
- 1...Qd7
- 2.Sxd7#
- 2.Re4#
- 1...Qd3+!
- threat
- 1.Sxg5?
- threat
- 2.Sf3#
- 2.Sf7#
- 2.Rxf5#
- 2.Qd4#
- 1...Qxh3
- 2.Sf7#
- 2.Qd4#
- 1...Qxf4
- 2.Sf7#
- 1...Qxg5
- 2.Re4#
- 2.Qe3#
- 2.Qd4#
- 2.Qe6#
- 1...Qxf6
- 2.Sf3#
- 2.Re4#
- 1...e6
- 2.Qd4#
- 1...Qb1
- 2.Sf3#
- 2.Sf7#
- 2.Sg4#
- 2.Qd4#
- 2.Qe6#
- 1...Qc2
- 2.Sf3#
- 2.Sf7#
- 2.Sg4#
- 2.Qd4#
- 2.Qe6#
- 1...Qe4
- 2.Sf7#
- 2.Sg4#
- 2.Rxe4#
- 1...Qg4
- 2.Sf7#
- 2.Sxg4#
- 2.Qe3#
- 2.Qd4#
- 1...Qe6
- 2.Sf3#
- 2.Qxe6#
- 1...Qg6
- 2.Sf3#
- 2.Sg4#
- 2.Qd4#
- 2.Qe6#
- 1...Qd7
- 2.Sf3#
- 2.Sf7#
- 2.Re4#
- 1...Qh7
- 2.Sf3#
- 2.Sg4#
- 2.Qd4#
- 2.Qe6#
- 1...Qc8
- 2.Sf3#
- 2.Sf7#
- 2.Re4#
- 2.Qe3#
- 2.Qd4#
- 1...Qd3+!
- threat
- 1.Sd7+?
- 1...Kxd5
- 2.Sc3#
- 1...Qxd7!
- 1...Kxd5
- 1.Bb2+?
- 1...Kxf4
- 2.Qe3#
- 1...axb2!
- 1...Kxf4
- 1.Be3?
- threat
- 2.Qd4#
- 1...Qxe4
- 2.Rxe4#
- 2.Qe6#
- 1...Qe6
- 2.Qxe6#
- 1...Qxf6!
- threat
- 1.Qc5?
- threat
- 2.Qc3#
- 1...Qe6+
- 2.dxe6#
- 1...Qxf6+
- 2.d6#
- 1...Qxe4
- 2.Sd7#
- 1...Rg3
- 2.Rxf5#
- 1...Qxh3!
- threat
- 1.c8Q?
- threat
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qxh3
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qxe4
- 2.Rxe4#
- 2.Qce6#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qxf4
- 2.Qce6#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qxf6
- 2.Qc3#
- 1...exf6
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg1
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qg4
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qe6
- 2.Qcxe6#
- 2.Qc3#
- 1...Qg6
- 2.Qce6#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qd7
- 2.Qc3#
- 1...Qh7
- 2.Qce6#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg2
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg3
- 2.Rxf5#
- 2.Qxf5#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg4
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rh5
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg6
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg7
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Rg8
- 2.Rxf5#
- 2.Qxf5#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...a2
- 2.Qb2#
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...e6
- 2.Qc3#
- 2.Qcc7#
- 2.Qb8#
- 2.b8Q#
- 2.b8B#
- 1...Qxc8!
- threat
- 1.Sc3?
- Keys
- 1.Qe3!
- threat
- 2.Qc3#
- 1...Qe6+
- 2.Sd6#
- 1...Qxf6+
- 2.Sxf6#
- 1...Qxh3
- 2.Sg3#
- 1...Qxe4
- 2.Qxe4#
- 1...Rg3
- 2.Rxf5#
- threat
- 1.Qe3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(c);OGATE,XS(D)::R1(E),XQ(c)
- R(d);N_GUARD::R1(E),XQ(c)
- P(a);N_GUARD::QAB(H)
- Tries
- Try
- S(D);
- Threat
- QAB1(H)
- Vars
- Q(c);N_GUARD,XR(E)::S(I)
- Q(c);N_GUARD,P_PINQ(H),XS(I)::R1(E)
- Q(c);N_GUARD,P_PINQ(H)::QAR1(H),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- S(D);XR(d)
- Threat
- DUALS(4)
- Vars
- Q(c);XR(E)::S(D)
- P(e);::QAB1(H)
- Refutation
- Q(c);CHECK
- Try
- S(I);CHECK
- Vars
- K(b);P-FLIGHT,XP(F)::S(D)
- Refutation
- Q(c);XS(I)
- Try
- B(A);CHECK
- Vars
- K(b);S_FLIGHT,XR(E)::QAB1(H)
- Refutation
- P(a);XB(A)
- Try
- B(A);
- Threat
- QAB1(H)
- Vars
- Q(c);N_GUARD,P_PINQ(H)::QAR1(H),XQ(c)
- Refutation
- Q(c);P_PINQ(H),XS(I)
- Try
- Q(H);
- Threat
- QAB(H)
- Vars
- Q(c);CHECK,OGATE::QAR(H)+P(F),XQ(c)
- Q(c);CHECK,XS(I)::QAR(H)+P(F)
- Q(c);N_GUARD,XS(D)::S(I)
- R(d);N_GUARD::R1(E),XQ(c)
- Refutation
- Q(c);XB(C)
- Try
- P(K);
- Threat
- DUALS(5)
- Vars
- Q(c);P_PINQ(H),XS(I)::QAB(K)
- Q(c);::QAB(K)
- Refutation
- Q(c);P_PINP(J),XQ(K)
- Try
- Actual
- Q(H);
- Threat
- QAB(H)
- Vars
- Q(c);CHECK,N_GUARD::QAR(H)+S(D)
- Q(c);CHECK,XS(I)::QAR(H)+S(D),XQ(c)
- Q(c);N_GUARD,XB(C)::QAR(H)+S(D)
- Q(c);OGATE,P_SPINQ(c),XS(D)::QAR1(H),XQ(c)
- R(d);N_GUARD::R1(E),XQ(c)
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).