MESON Chess Problem Database
Problem Display
PID: 24603 (8/4Q3/7N/8/3b1kN1/3P4/6K1/8 w - - 0 1)
Leon-Martin, Gabriel
Le Soleil de Marseille, 1926
#2
5 + 2
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 133 | The Problemist Supplement | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qe3#
- 1...Bg1
- 2.Qf6#
- 2.Qe5#
- 1...Bb2
- 2.Qe3#
- 1...Bf2
- 2.Qf6#
- 2.Qe5#
- 1...Bc3
- 2.Qe3#
- 1...Be3
- 2.Qf6#
- 2.Qxe3#
- 2.Qe5#
- 1...Bc5
- 2.Qf6#
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bb6
- 2.Qf6#
- 2.Qe5#
- 1...Bf6
- 2.Qxf6#
- 2.Qe3#
- 1...Ba7
- 2.Qf6#
- 2.Qe5#
- 1...Bg7
- 2.Qe3#
- 1...Bh8
- 2.Qe3#
- 1...Ba1
- Tries
- 1.Kh3?
- 1...Kf3
- 2.Qe4#
- 1...Bf6
- 2.Qxf6#
- 2.Qe3#
- 1...Ba1
- 2.Qe3#
- 1...Bg1
- 2.Qf6#
- 1...Bb2
- 2.Qe3#
- 1...Bf2
- 2.Qf6#
- 1...Bc3
- 2.Qe3#
- 1...Be3
- 2.Qf6#
- 2.Qxe3#
- 1...Bc5
- 2.Qf6#
- 1...Bb6
- 2.Qf6#
- 1...Ba7
- 2.Qf6#
- 1...Bg7
- 2.Qe3#
- 1...Bh8
- 2.Qe3#
- 1...Be5!
- 1...Kf3
- 1.Se3?
- threat
- 2.Sd5#
- 1...Bxe3
- 2.Qf6#
- 1...Bf6!
- threat
- 1.Qc5?
- threat
- 2.Qf5#
- 1...Be5
- 2.Qe3#
- 2.Qc1#
- 2.Qxe5#
- 1...Bxc5!
- threat
- 1.Qd6+?
- 1...Be5
- 2.Qxe5#
- 1...Kg5!
- 1...Be5
- 1.Qf8+?
- 1...Bf6
- 2.Qxf6#
- 1...Kg5!
- 1...Bf6
- 1.Qe1?
- 1...Be5
- 2.Qd2#
- 2.Qc1#
- 2.Qe3#
- 2.Qxe5#
- 1...Ba1
- 2.Qd2#
- 2.Qc1#
- 2.Qe3#
- 1...Bg1
- 2.Qe5#
- 1...Bb2
- 2.Qd2#
- 2.Qe3#
- 1...Bf2
- 2.Qe5#
- 1...Bc3
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 1...Bc5
- 2.Qe5#
- 1...Bb6
- 2.Qe5#
- 1...Bf6
- 2.Qd2#
- 2.Qc1#
- 2.Qe3#
- 1...Ba7
- 2.Qe5#
- 1...Bg7
- 2.Qd2#
- 2.Qc1#
- 2.Qe3#
- 1...Bh8
- 2.Qd2#
- 2.Qc1#
- 2.Qe3#
- 1...Kg5!
- 1...Be5
- 1.Qe2?
- 1...Be5
- 2.Qd2#
- 2.Qe3#
- 2.Qxe5#
- 1...Ba1
- 2.Qd2#
- 2.Qe3#
- 1...Bg1
- 2.Qe5#
- 1...Bb2
- 2.Qd2#
- 2.Qe3#
- 1...Bf2
- 2.Qe5#
- 1...Bc3
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 1...Bc5
- 2.Qe5#
- 1...Bb6
- 2.Qe5#
- 1...Bf6
- 2.Qd2#
- 2.Qe3#
- 1...Ba7
- 2.Qe5#
- 1...Bg7
- 2.Qd2#
- 2.Qe3#
- 1...Bh8
- 2.Qd2#
- 2.Qe3#
- 1...Kg5!
- 1...Be5
- 1.Qc7+?
- 1...Be5
- 2.Qxe5#
- 2.Qc1#
- 1...Kg5!
- 1...Be5
- 1.Qf7+?
- 1...Bf6
- 2.Qxf6#
- 1...Kg5!
- 1...Bf6
- 1.Qe8?
- 1...Be5
- 2.Qxe5#
- 1...Ba1
- 2.Qe3#
- 1...Bg1
- 2.Qe5#
- 1...Bb2
- 2.Qe3#
- 1...Bf2
- 2.Qe5#
- 1...Bc3
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 2.Qe5#
- 1...Bc5
- 2.Qe5#
- 1...Bb6
- 2.Qe5#
- 1...Bf6
- 2.Qe3#
- 1...Ba7
- 2.Qe5#
- 1...Bg7
- 2.Qe3#
- 1...Bh8
- 2.Qe3#
- 1...Kg5!
- 1...Be5
- 1.Kh3?
- Keys
- 1.Sf7!
- threat
- 2.Qg5#
- 2.Qe4#
- 1...Kxg4
- 2.Qg5#
- 1...Kf5
- 2.Qe4#
- 1...Be5
- 2.Qg5#
- 1...Bf6
- 2.Qe4#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- B(a);N_GUARD::QAB1(E)
- B(a);N_GUARD::QAB1(E),XB(a)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- K(b);P-FLIGHT::QAB1(E)
- B(a);N_GUARD::QAB1(E)
- B(a);N_GUARD::QAR2(E)
- Refutation
- B(a);
- Try
- S(C);
- Threat
- S(C)
- Vars
- B(a);N_GUARD,SBLOCK,XS(C)::QAR2(E)
- Refutation
- B(a);
- Try
- Q(E);
- Threat
- QAR1(E)
- Refutation
- B(a);XQ(E)
- Try
- Q(E);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAB1(E),XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR2(E),XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);
- Vars
- B(a);N_GUARD::QAB1(E)
- B(a);N_GUARD::QAB1(E),XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);
- Vars
- B(a);N_GUARD::QAB1(E)
- B(a);N_GUARD::QAB1(E),XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);CHECK
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);CHECK
- Vars
- B(a);N_GUARD,P_SPINB(a)::QAR2(E),XB(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(E);
- Vars
- B(a);N_GUARD::QAB1(E),XB(a)
- B(a);N_GUARD::QAB1(E)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- S(D);
- Threat
- DUALS(2)
- Vars
- K(b);P-FLIGHT,XS(C)::QAR1(E)
- K(b);P-FLIGHT::QAB1(E)
- B(a);::QAB1(E)
- B(a);::QAR1(E)
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).