MESON Chess Problem Database
Problem Display
PID: 101607 (7b/1p2rR1r/bpk1N3/1N1R4/8/8/1n2K1B1/Q7 w - - 0 1)
Courthiau, Bernard
diagrammes, 1976
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxe6+
- 2.Re5#
- 1...Rc7
- 2.Sd8#
- 2.Rc5#
- 2.Re5#
- 2.Rdf5#
- 2.Rg5#
- 2.Rh5#
- 1...Rd7
- 2.Rc5#
- 1...Rexf7
- 2.Sd8#
- 1...Re8
- 2.Rc5#
- 2.Re5#
- 2.Rdf5#
- 2.Rg5#
- 2.Rh5#
- 1...Bxb5+
- 2.Rd3#
- 1...Be5
- 2.Sd8#
- 1...Sd3
- 2.Sa7#
- 1...Sc4
- 2.Sa7#
- 1...Rxe6+
- Tries
- 1.Be4?
- threat
- 2.Sd8#
- 1...Bxb5+
- 2.Rd3#
- 1...Rxe6
- 2.Re5#
- 1...Rd7
- 2.Rc5#
- 1...Re8
- 2.Rc5#
- 2.Re5#
- 2.Rdf5#
- 2.Rg5#
- 2.Rh5#
- 1...Rh2+!
- threat
- 1.Rff5?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Bxb5+
- 2.Rd3#
- 1...Rd7
- 2.Rc5#
- 2.Rd6#
- 1...Reg7
- 2.Sd4#
- 2.Sd8#
- 2.Rd6#
- 1...Rh2
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rh4
- 2.Rd6#
- 1...Rhg7
- 2.Rd6#
- 1...Bd4
- 2.Rxd4#
- 2.Rd6#
- 2.Rd8#
- 1...Be5
- 2.Sd8#
- 1...Sd1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd3
- 2.Sa7#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Rxe6+!
- threat
- 1.Rxe7?
- threat
- 2.Sd8#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Bxb5+
- 2.Rd3#
- 1...Rh2
- 2.Sd8#
- 2.Rc5#
- 2.Rc7#
- 1...Rh3
- 2.Sd8#
- 2.Rc5#
- 2.Rc7#
- 1...Rh4
- 2.Sd8#
- 2.Rc5#
- 2.Rc7#
- 1...Rh5
- 2.Sd8#
- 2.Rc5#
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rxh5#
- 2.Rc7#
- 1...Rf7
- 2.Sd8#
- 2.Rc5#
- 2.Rf5#
- 1...Rg7
- 2.Sd4#
- 2.Sd8#
- 2.Rc5#
- 2.Rg5#
- 1...Be5
- 2.Sd8#
- 2.Rc5#
- 2.Rxe5#
- 1...Rxe7!
- threat
- 1.Qxb2?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Rxe6+
- 2.Re5#
- 1...Bxb5+
- 2.Rd3#
- 2.Qxb5#
- 1...Rexf7
- 2.Sd8#
- 2.Rd6#
- 1...Rhxf7
- 2.Rd6#
- 1...Rd7
- 2.Rc5#
- 2.Rd6#
- 2.Rdxd7#
- 1...Rh2
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rh4
- 2.Rd6#
- 1...Rh5
- 2.Rd6#
- 1...Rg7
- 2.Rd6#
- 2.Qc1#
- 2.Qc3#
- 2.Qc2#
- 1...Bd4
- 2.Rxd4#
- 2.Rd6#
- 2.Rd8#
- 1...Bxb2!
- threat
- 1.Qc1+?
- 1...Sc4
- 2.Sa7#
- 2.Qxc4#
- 1...Bc3!
- 1...Sc4
- 1.Qa4?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Rxe6+
- 2.Re5#
- 1...Bxb5+
- 2.Rd3#
- 2.Qxb5#
- 1...Rexf7
- 2.Sd8#
- 2.Rd6#
- 1...Rhxf7
- 2.Rd6#
- 1...Rd7
- 2.Rc5#
- 2.Rd6#
- 2.Rdxd7#
- 1...Rh2
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rh4
- 2.Rd6#
- 1...Rh5
- 2.Rd6#
- 1...Rg7
- 2.Rd6#
- 1...Bd4
- 2.Rxd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 2.Qc4#
- 1...Sd3
- 2.Sd4#
- 2.Sa7#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sxa4!
- threat
- 1.Qa5?
- threat
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Rxe6+
- 2.Re5#
- 1...Bxb5+
- 2.Rd3#
- 2.Qxb5#
- 1...Rexf7
- 2.Sd8#
- 2.Rd6#
- 1...Rhxf7
- 2.Rd6#
- 1...Rd7
- 2.Rc5#
- 2.Rd6#
- 2.Rdxd7#
- 1...Rh2
- 2.Rd6#
- 1...Rh3
- 2.Rd6#
- 1...Rh4
- 2.Rd6#
- 1...Rh5
- 2.Rd6#
- 1...Rg7
- 2.Rd6#
- 1...Bd4
- 2.Rxd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd3
- 2.Sa7#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...bxa5!
- threat
- 1.Qxa6?
- threat
- 2.Sa7#
- 2.Rd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Rxe6+
- 2.Re5#
- 1...Rexf7
- 2.Sa7#
- 2.Sd8#
- 2.Rd6#
- 1...Rhxf7
- 2.Sa7#
- 2.Rd6#
- 1...Rd7
- 2.Sa7#
- 2.Rc5#
- 2.Rd6#
- 2.Rdxd7#
- 1...Rh2
- 2.Sa7#
- 2.Rd6#
- 1...Rh3
- 2.Sa7#
- 2.Rd6#
- 1...Rh4
- 2.Sa7#
- 2.Rd6#
- 1...Rh5
- 2.Sa7#
- 2.Rd6#
- 1...Rg7
- 2.Sd4#
- 2.Sa7#
- 2.Rd6#
- 1...Bd4
- 2.Sxd4#
- 2.Sa7#
- 2.Rxd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd1
- 2.Sa7#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...Sd3
- 2.Sa7#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd6#
- 2.Rd8#
- 1...bxa6!
- threat
- 1.Be4?
- Keys
- 1.Qa3!
- threat
- 2.Qd6#
- 1...Rxe6+
- 2.Re5#
- 1...Bxb5+
- 2.Rd3#
- 1...Rd7
- 2.Rc5#
- 1...Be5
- 2.Sd8#
- 1...Sc4
- 2.Sa7#
- threat
- 1.Qa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- R(f);CHECK,XS(F)::B(C)+R(E)
- R(f);::B(C)+R(E),DCHECK
- R(f);XR(G)::S(F)
- B(b);CHECK,P_PINS(F),SBLOCK,XS(D)::B(C)+R(E)
- B(h);::S(F)
- S(a);N_PINS(D),P_PINS(F)::S(D)
- Tries
- Try
- B(C);
- Threat
- S(F)
- Vars
- B(b);CHECK,SBLOCK,XS(D)::B(C)+R(E)
- R(f);P_PINB(C),XS(F)::B(C)+R(E)
- R(f);::B(C)+R(E),DCHECK
- Refutation
- R(g);CHECK
- Try
- R(G);
- Threat
- DUALS(6)
- Vars
- B(b);CHECK,P_PINS(F),XS(D)::B(C)+R(E)
- R(g);P_PINB(C)::B(C)+R(E),DCHECK
- R(g);::B(C)+R(E),DCHECK
- B(h);::S(F)
- Refutation
- R(f);CHECK,XS(F)
- Try
- R(G);XR(f)
- Threat
- DUALS(6)
- Vars
- B(b);CHECK,SBLOCK,XS(D)::B(C)+R(E)
- Refutation
- R(g);XR(G)
- Try
- Q(A);XS(a)
- Threat
- DUALS(6)
- Vars
- R(f);CHECK,XS(F)::B(C)+R(E)
- R(g);XR(G)::B(C)+R(E),DCHECK
- R(g);P_PINB(C)::B(C)+R(E),DCHECK
- R(g);::B(C)+R(E),DCHECK
- Refutation
- B(h);XQ(A)
- Try
- Q(A);CHECK
- Refutation
- B(h);P_SPINB(h)
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- R(f);CHECK,XS(F)::B(C)+R(E)
- R(g);XR(G)::B(C)+R(E),DCHECK
- R(g);P_PINB(C)::B(C)+R(E),DCHECK
- R(g);::B(C)+R(E),DCHECK
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- R(f);CHECK,XS(F)::B(C)+R(E)
- R(g);XR(G)::B(C)+R(E),DCHECK
- R(g);P_PINB(C)::B(C)+R(E),DCHECK
- R(g);::B(C)+R(E),DCHECK
- Refutation
- P(c);XQ(A)
- Try
- Q(A);N_SPINS(D),P_PINP(c),P_SPINS(F),XB(b)
- Threat
- DUALS(7)
- Vars
- R(f);CHECK,XS(F)::B(C)+R(E)
- Refutation
- P(e);N_SPINP(c),XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- R(f);CHECK,XS(F)::B(C)+R(E)
- B(b);CHECK,P_PINS(F),SBLOCK,XS(D)::B(C)+R(E)
- R(f);::B(C)+R(E),DCHECK
- B(h);::S(F)
- S(a);N_PINS(D),P_PINS(F)::S(D)
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).