MESON Chess Problem Database
Problem Display
PID: 145093 (r6Q/8/rp6/1B1k1N2/1P6/8/4R2p/b6K w - - 0 1)
O'Shea, Patrick
The Problemist, 1997
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd8
- 2.Qxd8#
- 1...Rg8
- 2.Qxg8#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...Rd8
- Tries
- 1.Qxa1?
- threat
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 2.Qd1#
- 1...Ra2
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Ra3
- 2.Re5#
- 2.Qd4#
- 2.Qe5#
- 1...Re8
- 2.Qd4#
- 2.Qd1#
- 1...Rxa1+!
- threat
- 1.Qb2?
- threat
- 2.Re5#
- 2.Qb3#
- 1...Ra3
- 2.Re5#
- 1...Rc8
- 2.Re5#
- 1...Re8
- 2.Qb3#
- 1...Bxb2!
- threat
- 1.Qc3?
- threat
- 2.Bc6#
- 2.Re5#
- 2.Qb3#
- 2.Qf3#
- 2.Qc4#
- 2.Qc6#
- 1...Ra3
- 2.Bc6#
- 2.Re5#
- 2.Qc4#
- 2.Qc6#
- 1...Rc8
- 2.Re5#
- 2.Qf3#
- 1...Re8
- 2.Bc6#
- 2.Qb3#
- 2.Qc4#
- 2.Qc6#
- 1...Bxc3!
- threat
- 1.Qf6?
- threat
- 2.Se7#
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 2.Qf7#
- 1...R6a7
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 1...R8a7
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 1...Rc8
- 2.Se7#
- 2.Qd6#
- 2.Qe6#
- 2.Qf7#
- 1...Rd8
- 2.Se7#
- 2.Qxd8#
- 2.Qc6#
- 2.Qe6#
- 2.Qf7#
- 1...Re8
- 2.Qc6#
- 2.Qd6#
- 1...Rf8
- 2.Se7#
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qc6#
- 2.Qf7#
- 1...Bxf6!
- threat
- 1.Qg7?
- threat
- 2.Qg2#
- 2.Qb7#
- 2.Qd7#
- 2.Qf7#
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 2.Qf7#
- 1...Ra3
- 2.Qb7#
- 2.Qd7#
- 2.Qf7#
- 1...R6a7
- 2.Qg2#
- 1...R8a7
- 2.Qg2#
- 1...Rb8
- 2.Qg2#
- 2.Qd7#
- 2.Qf7#
- 1...Rc8
- 2.Qg2#
- 2.Qd7#
- 2.Qf7#
- 1...Rd8
- 2.Qg2#
- 2.Qb7#
- 2.Qf7#
- 1...Re8
- 2.Qb7#
- 2.Qd7#
- 1...Rf8
- 2.Qg2#
- 2.Qb7#
- 2.Qd7#
- 1...Rg8
- 2.Qb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 1...Bxg7!
- threat
- 1.Qxh2?
- threat
- 2.Qd6#
- 2.Qg2#
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...Ra3
- 2.Qd6#
- 1...Rd8
- 2.Qg2#
- 1...Re8
- 2.Qd6#
- 1...Rg8
- 2.Qd6#
- 1...Rh8!
- threat
- 1.Qh3?
- threat
- 2.Qg2#
- 2.Qb3#
- 2.Qf3#
- 1...Be5
- 2.Qb3#
- 1...Rc8
- 2.Qg2#
- 2.Qf3#
- 1...Re8
- 2.Qb3#
- 1...Rg8
- 2.Qb3#
- 2.Qf3#
- 1...Bc3
- 2.Qg2#
- 2.Qf3#
- 1...Ra3!
- threat
- 1.Qh5?
- threat
- 2.Qf3#
- 2.Qf7#
- 1...Be5
- 2.Qf7#
- 1...Ra3
- 2.Qf7#
- 1...R6a7
- 2.Qf3#
- 1...R8a7
- 2.Qf3#
- 1...Rf8
- 2.Qf3#
- 1...Re8!
- threat
- 1.Qh6?
- threat
- 2.Qc6#
- 2.Qd6#
- 2.Qe6#
- 1...Rc8
- 2.Qd6#
- 2.Qe6#
- 1...Rd8
- 2.Qc6#
- 2.Qe6#
- 1...Re8
- 2.Qc6#
- 2.Qd6#
- 1...Be5
- 2.Qc6#
- 1...Bf6!
- threat
- 1.Qb8?
- threat
- 2.Qd6#
- 2.Qb7#
- 1...Be5
- 2.Rxe5#
- 2.Qxe5#
- 1...R6a7
- 2.Qd6#
- 1...R8a7
- 2.Qd6#
- 1...Rxb8!
- threat
- 1.Qc8?
- threat
- 2.Bc4#
- 2.Qe6#
- 2.Qb7#
- 2.Qd7#
- 2.Qc4#
- 2.Qc6#
- 1...R6a7
- 2.Bc4#
- 2.Qe6#
- 2.Qc4#
- 2.Qc6#
- 1...R8a7
- 2.Bc4#
- 2.Qe6#
- 2.Qc4#
- 2.Qc6#
- 1...Rb8
- 2.Bc4#
- 2.Qe6#
- 2.Qd7#
- 2.Qc4#
- 2.Qc6#
- 1...Be5
- 2.Bc4#
- 2.Qc4#
- 2.Qc6#
- 1...Rxc8!
- threat
- 1.Qe8?
- threat
- 2.Qc6#
- 2.Qd7#
- 2.Qf7#
- 2.Qe4#
- 2.Qe6#
- 1...R6a7
- 2.Qc6#
- 2.Qe4#
- 2.Qe6#
- 1...R8a7
- 2.Qc6#
- 2.Qe4#
- 2.Qe6#
- 1...Rc8
- 2.Qd7#
- 2.Qf7#
- 2.Qe4#
- 2.Qe6#
- 1...Rd8
- 2.Qc6#
- 2.Qf7#
- 2.Qe4#
- 2.Qe6#
- 2.Qxd8#
- 1...Be5
- 2.Rxe5#
- 2.Qc6#
- 2.Qf7#
- 2.Qxe5#
- 1...Rxe8!
- threat
- 1.Qf8?
- threat
- 2.Qd6#
- 2.Qf7#
- 1...Be5
- 2.Qf7#
- 1...R6a7
- 2.Qd6#
- 1...R8a7
- 2.Qd6#
- 1...Rd8
- 2.Qf7#
- 2.Qxd8#
- 1...Re8
- 2.Qd6#
- 1...Rxf8!
- threat
- 1.Qxa1?
- Keys
- 1.Qh4!
- threat
- 2.Qc4#
- 2.Qe4#
- 1...Be5
- 2.Qc4#
- 1...Rc8
- 2.Qe4#
- 1...Re8
- 2.Qc4#
- 1...Bd4
- 2.Qxd4#
- 2.Qe4#
- threat
- 1.Qh4!
This is a version
Also after N. A. Macleod.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD::QAR(F),XR(f)
- R(f);N_GUARD::QAB(F),XR(f)
- B(a);N_GUARD::QAR1(F),XB(a)
- Tries
- Try
- Q(F);XB(a)
- Threat
- DUALS(4)
- Refutation
- R(d);CHECK,XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(d);::R1(B)
- R(f);::R1(B)
- R(f);::QAB(F)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(6)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(5)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- R(d);::QAB(F)
- R(f);::QAB(F)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);XP(b)
- Threat
- DUALS(2)
- Vars
- R(d);::QAR1(F)
- R(f);::QAB(F)
- R(f);::QAR1(F)
- Refutation
- R(f);P_PINQ(F)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB(F)
- R(f);::QAB(F)
- Refutation
- R(d);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB(F)
- R(d);::QAB(F)
- R(f);::QAB(F)
- Refutation
- R(f);
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- B(a);::QAB1(F)
- Refutation
- B(a);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR1(F)
- R(f);::QAR1(F)
- Refutation
- R(f);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(6)
- Refutation
- R(f);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(5)
- Refutation
- R(f);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB(F)
- R(d);::QAR1(F)
- R(f);::QAR1(F)
- Refutation
- R(f);XQ(F)
- Try
- Actual
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(a);::QAB1(F)
- R(f);::QAB1(F)
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).