MESON Chess Problem Database
Problem Display
PID: 143332 (q7/1BP3Q1/2R5/8/1P3PP1/8/5P1p/5K1k w - - 0 1)
Lipton, Michael
The Problemist, 2011
#2
9 + 3
SOLUTION
- SOUND
- Sets
- 1...Qa1+
- 2.Rc1#
- 1...Qa2
- 2.Rc4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 1...Qa6+
- 2.Rxa6#
- 1...Qd8
- 2.Rd6#
- 1...Qf8
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qg8
- 2.Re6#
- 1...Qh8
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qa1+
- Tries
- 1.Qc3?
- threat
- 2.Qf3#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa3
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qa1+!
- threat
- 1.Qd4?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa2
- 2.Rc4#
- 2.Qe4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 2.Qe4#
- 1...Qd8
- 2.Rd6#
- 2.Qe4#
- 1...Qg8
- 2.Re6#
- 2.Qe4#
- 1...Qe8!
- threat
- 1.Qe5?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa2
- 2.Rc4#
- 2.Qe4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 2.Qe4#
- 1...Qd8
- 2.Rd6#
- 2.Qe4#
- 1...Qg8
- 2.Re6#
- 2.Qe4#
- 1...Qe8!
- threat
- 1.Qg5?
- threat
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa2
- 2.Rc4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 1...Qd8
- 2.Rd6#
- 1...Qg8
- 2.Re6#
- 1...Qe8!
- threat
- 1.Qg6?
- threat
- 2.Qe4#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa3
- 2.Rc3#
- 1...Qe8!
- threat
- 1.Qe7?
- threat
- 2.Qe4#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa3
- 2.Rc3#
- 1...Qe8!
- threat
- 1.Qf7?
- threat
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa2
- 2.Rc4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 1...Qd8
- 2.Rd6#
- 1...Qg8
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qe8!
- threat
- 1.Qh7?
- threat
- 2.Qe4#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa3
- 2.Rc3#
- 1...Qe8!
- threat
- 1.Qg8?
- threat
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qxg8
- 2.Re6#
- 1...Qa2
- 2.Rc4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 1...Qd8
- 2.Rd6#
- 1...Qe8!
- threat
- 1.Qc3?
- Keys
- 1.Qd7!
- threat
- 2.Qd5#
- 1...Qa1+
- 2.Rc1#
- 1...Qa6+
- 2.Rxa6#
- 1...Qa2
- 2.Rc4#
- 1...Qa3
- 2.Rc3#
- 1...Qa5
- 2.Rc5#
- 1...Qd8
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Ra6#
- 2.Rb6#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 1...Qe8
- 2.Re6#
- 1...Qg8
- 2.Re6#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);N_GUARD,SBLOCK::B(G)+R(F)
- Q(c);N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Tries
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD,SBLOCK::B(G)+R(F)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD,SBLOCK::B(G)+R(F)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);P_PINP(b)
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD,XQ(I)::B(G)+R(F)
- Q(c);N_GUARD,SBLOCK::B(G)+R(F)
- Q(c);N_GUARD::B(G)+R(F)
- Refutation
- Q(c);
- Try
- Actual
- Q(I);
- Threat
- QAB(I)
- Vars
- Q(c);CHECK,N_GUARD::B(G)+R(F)
- Q(c);CHECK,N_GUARD::B(G)+R(F),XQ(c)
- Q(c);N_GUARD,SBLOCK::B(G)+R(F)
- Q(c);N_GUARD::B(G)+R(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).