MESON Chess Problem Database
Problem Display
PID: 180854 (4K3/4p3/4k2p/1R2b3/2p1N1p1/4Q3/8/8 w - - 0 1)
Servais, Albert
Bulletin Ouvrier des Echecs, 1952
#2
4 + 6
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.Qb6#
- 1...Bb2
- 2.Qb6#
- 1...Bh2
- 2.Qxh6#
- 1...Bc3
- 2.Qb6#
- 1...Bg3
- 2.Qxh6#
- 1...Bd6
- 2.Qxh6#
- 1...Bf6
- 2.Qb6#
- 1...Bc7
- 2.Qxh6#
- 1...Bg7
- 2.Qb6#
- 1...Bb8
- 2.Qxh6#
- 1...Bh8
- 2.Qb6#
- 1...Ba1
- Tries
- 1.Sd6?
- threat
- 2.Qxe5#
- 1...Kxd6
- 2.Qb6#
- 1...Kf6
- 2.Qxh6#
- 1...exd6!
- threat
- 1.Qf2?
- threat
- 2.Qf7#
- 1...Bf6
- 2.Qb6#
- 2.Qf5#
- 1...Bf4!
- threat
- 1.Qf4?
- threat
- 2.Rxe5#
- 2.Qxe5#
- 2.Qxg4#
- 2.Qf7#
- 1...Bd4
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Ba1
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bb2
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bc3
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bd6
- 2.Qxh6#
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bf6
- 2.Qxg4#
- 2.Qf5#
- 1...Bc7
- 2.Qxh6#
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bg7
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bb8
- 2.Qxh6#
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...Bh8
- 2.Qxg4#
- 2.Qf5#
- 2.Qf7#
- 1...g3
- 2.Rxe5#
- 2.Qxe5#
- 2.Qg4#
- 2.Qf7#
- 1...h5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qf7#
- 1...Bxf4!
- threat
- 1.Qc5?
- threat
- 2.Qxe5#
- 2.Qc8#
- 1...Bd4
- 2.Rb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Ba1
- 2.Rb6#
- 2.Qb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Bb2
- 2.Rb6#
- 2.Qb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Bh2
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc8#
- 1...Bc3
- 2.Rb6#
- 2.Qb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Bg3
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc8#
- 1...Bf4
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc8#
- 1...Bd6
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc8#
- 1...Bf6
- 2.Rb6#
- 2.Qb6#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Bc7
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 1...Bg7
- 2.Rb6#
- 2.Qb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Bb8
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc8#
- 1...Bh8
- 2.Rb6#
- 2.Qb6#
- 2.Qxe7#
- 2.Qxc4#
- 2.Qd5#
- 2.Qf5#
- 2.Qc6#
- 2.Qc8#
- 1...Kf5!
- threat
- 1.Qg5?
- threat
- 2.Rxe5#
- 2.Qxg4#
- 2.Qxe5#
- 1...Bd4
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...Ba1
- 2.Rb6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...Bb2
- 2.Rb6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...Bh2
- 2.Qxh6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bc3
- 2.Rb6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...Bg3
- 2.Qxh6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bf4
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bd6
- 2.Qxh6#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bf6
- 2.Rb6#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...Bc7
- 2.Qxh6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bg7
- 2.Rb6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 1...Bb8
- 2.Qxh6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg6#
- 2.Qg8#
- 1...Bh8
- 2.Rb6#
- 2.Qxe7#
- 2.Qxg4#
- 2.Qd5#
- 2.Qf5#
- 2.Qg8#
- 1...g3
- 2.Rxe5#
- 2.Qg4#
- 2.Qxe5#
- 1...h5
- 2.Rxe5#
- 2.Qxe5#
- 1...hxg5!
- threat
- 1.Qxh6+?
- 1...Kf5
- 2.Sg3#
- 1...Bf6!
- 1...Kf5
- 1.Qf3?
- threat
- 2.Qxg4#
- 2.Qf7#
- 1...Bf4
- 2.Qxg4#
- 1...Bf6
- 2.Qxg4#
- 2.Qf5#
- 1...g3
- 2.Qg4#
- 2.Qf7#
- 1...h5
- 2.Qf7#
- 1...gxf3!
- threat
- 1.Sd6?
- Keys
- 1.Sg3!
- threat
- 2.Qxe5#
- 1...Kd6
- 2.Qb6#
- 1...Kf6
- 2.Qxh6#
- threat
- 1.Sg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- B(c);N_GUARD::QAR(A)
- B(c);N_GUARD::QAR(A),XP(e)
- Tries
- Try
- S(B);P_PINB(c)
- Threat
- QAR1(A),XB(c)
- Vars
- K(d);N_SPINB(c),OGATEB,P-FLIGHT,XS(B)::QAR2(A)
- K(d);N_SPINB(c),P-FLIGHT::QAR2(A),XP(e)
- Refutation
- P(f);XS(B)
- Try
- Q(A);
- Threat
- QAB1(A)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- B(c);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- K(d);P_SPINB(c),S_FLIGHT
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);CHECK,XP(e)
- Vars
- K(d);P_SPINB(c),S_FLIGHT::S(B)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(c);::QAB(A),XP(b)
- P(e);::QAB1(A)
- Refutation
- P(b);XQ(A)
- Try
- Actual
- S(B);P_PINB(c)
- Threat
- QAR1(A),XB(c)
- Vars
- K(d);N_SPINB(c),P-FLIGHT::QAR2(A)
- K(d);N_SPINB(c),P-FLIGHT::QAR2(A),XP(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).