MESON Chess Problem Database
Problem Display
PID: 24609 (8/2R4P/2q1N2R/1r1k4/1BN5/1p1B4/3p2K1/1Q6 w - - 0 1)
Servais, Albert
1st Prize, Bulletin de l'UPF, 1946-1947
#2
9 + 5
| 78 | Bulletin Ouvrier des Echecs | 1955 |
| 785 | Het Belgisch Schaakbord (L'Echiquier Belge) | 1957 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 3364 | Solving in Style | 1985 |
SOLUTION
- SOUND
- Sets
- 1...Qb7
- 2.Be4#
- 1...Qd7
- 2.Be4#
- 1...Qa8
- 2.Be4#
- 1...Qe8
- 2.Be4#
- 1...Qa6
- 2.Be4#
- 1...Qb6
- 2.Be4#
- 1...Qd6
- 2.Be4#
- 1...Qb7
- Tries
- 1.Bf1?
- threat
- 2.Qd3#
- 2.Qf5#
- 1...Qxc4
- 2.Qf5#
- 1...Qxe6
- 2.Qd3#
- 1...d1Q
- 2.Qf5#
- 1...d1R
- 2.Qf5#
- 1...Qc5
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qd6
- 2.Qd3#
- 1...Qxc7!
- threat
- 1.Be2?
- threat
- 2.Qd3#
- 2.Qf5#
- 1...Qxc4
- 2.Qf5#
- 1...Qxe6
- 2.Qd3#
- 1...d1Q
- 2.Qf5#
- 1...d1R
- 2.Qf5#
- 1...Qc5
- 2.Qf5#
- 1...Qb6
- 2.Bf3#
- 2.Qf5#
- 1...Qd6
- 2.Bf3#
- 2.Qd3#
- 1...Qxc7!
- threat
- 1.Bf5?
- threat
- 2.Qd3#
- 2.Qe4#
- 1...Kxc4+
- 2.Qe4#
- 1...Qxe6
- 2.Qd3#
- 1...Qxc7
- 2.Qe4#
- 1...d1Q
- 2.Qe4#
- 1...d1R
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Qb6
- 2.Be4#
- 2.Qe4#
- 1...Qxc4!
- threat
- 1.Rxc6?
- threat
- 2.Be4#
- 2.Rd6#
- 1...Rc5
- 2.Rxc5#
- 2.Rd6#
- 1...Rb6
- 2.Be4#
- 2.Rc5#
- 1...Kxc6!
- threat
- 1.Rd7+?
- 1...Qd6
- 2.Rxd6#
- 1...Qxd7!
- 1...Qd6
- 1.Qd1?
- threat
- 2.Qf3#
- 2.Qh5#
- 1...Qxc4
- 2.Qh5#
- 1...Qxc7
- 2.Qf3#
- 1...Qe8
- 2.Qf3#
- 1...Qd6
- 2.Qf3#
- 1...Qxe6!
- threat
- 1.Qf1?
- threat
- 2.Qf3#
- 2.Qf5#
- 1...Qxc4
- 2.Qf5#
- 1...Qxc7
- 2.Qf3#
- 1...d1Q
- 2.Qf5#
- 1...d1B
- 2.Qf5#
- 1...Qd6
- 2.Qf3#
- 1...Qxe6!
- threat
- 1.h8Q?
- threat
- 2.Se3#
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 1...Qxc4
- 2.Bxc4#
- 1...Qxc7
- 2.Sxc7#
- 1...Rxb4
- 2.Qd4#
- 2.Qe5#
- 1...d1S
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 1...Qc5
- 2.Sf4#
- 2.Qe5#
- 1...Qb6
- 2.Sf4#
- 2.Be4#
- 2.Qe5#
- 1...Qd6
- 2.Se3#
- 2.Be4#
- 2.Qd4#
- 1...Rc5
- 2.Sf4#
- 2.Qd4#
- 2.Qe5#
- 1...Qxe6!
- threat
- 1.Bf1?
- Keys
- 1.Bg6!
- threat
- 2.Qe4#
- 1...Kxc4+
- 2.Qe4#
- 1...Kxe6+
- 2.Be4#
- 1...Qxc4
- 2.Qf5#
- 1...Qxe6
- 2.Qd3#
- threat
- 1.Bg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(e);::B(C)
- Tries
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(E)::QAR2(A)
- Q(e);XS(F)::QAR2(A)
- P(a);::QAR2(A)
- Q(e);::QAR2(A)
- Refutation
- Q(e);XR(H)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(E)::QAR2(A)
- Q(e);XS(F)::QAR2(A)
- P(a);::QAR2(A)
- Q(e);::QAR2(A)
- Refutation
- Q(e);XR(H)
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- K(d);CHECK,P_SPINQ(e),S_FLIGHT,XS(E)::QAR2(A)
- Q(e);XS(F)::QAR2(A)
- Q(e);XR(H)::QAB1(A)
- P(a);::QAB1(A)
- Q(e);::QAB1(A)
- Refutation
- Q(e);XS(E)
- Try
- R(H);XQ(e)
- Threat
- DUALS(2)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- R(H);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::R1(H),XQ(e)
- Refutation
- Q(e);XR(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(E)::QAR(A)
- Q(e);XR(H)::QAB(A)
- Q(e);::QAB(A)
- Refutation
- Q(e);XS(F)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(e);XS(E)::QAR2(A)
- Q(e);XR(H)::QAB(A)
- P(a);::QAR2(A)
- Q(e);::QAB(A)
- Refutation
- Q(e);XS(F)
- Try
- P(I);
- Threat
- DUALS(4)
- Vars
- Q(e);OGATE,XS(E)::B(C),XQ(e)
- Q(e);XR(H)::S(F),XQ(e)
- Refutation
- Q(e);XS(F)
- Try
- Actual
- B(C);
- Threat
- QAB1(A)
- Vars
- K(d);CHECK,P_SPINQ(e),S_FLIGHT,XS(E)::QAR2(A)
- K(d);CHECK,S_FLIGHT,XS(F)::R(G)+B(C)
- Q(e);XS(E)::QAR2(A)
- Q(e);SBLOCK,XS(F)::QAR2(A)
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).