MESON Chess Problem Database
Problem Display
PID: 141277 (8/1Rr5/8/8/8/Q3B1K1/1p6/7k w - - 0 1)
Lipton, Michael
Deutsche Schachzeitung, 1987
#2
4 + 3
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rh7#
- 1...Rc3
- 2.Rh7#
- 1...Rh7
- 2.Rxh7#
- 1...Rc8
- 2.Rh7#
- 1...Rc1
- Tries
- 1.Rxc7?
- threat
- 2.Rh7#
- 2.Qa8#
- 1...b1B
- 2.Rc1#
- 2.Qc1#
- 1...b1R
- 2.Rh7#
- 1...b1Q!
- threat
- 1.Qb4?
- threat
- 2.Qe1#
- 2.Qe4#
- 2.Qh4#
- 1...b1Q
- 2.Qh4#
- 1...b1B
- 2.Qe1#
- 2.Qh4#
- 1...b1R
- 2.Qe4#
- 2.Qh4#
- 1...Rc2
- 2.Qe1#
- 1...Rc1
- 2.Rh7#
- 2.Qe4#
- 2.Qh4#
- 1...Rc3
- 2.Rh7#
- 2.Qe4#
- 2.Qh4#
- 1...Rc4
- 2.Qe1#
- 1...Re7
- 2.Qe1#
- 2.Qh4#
- 1...Rf7
- 2.Qh4#
- 1...Rh7
- 2.Rxh7#
- 2.Qe1#
- 2.Qe4#
- 1...Rg7+!
- threat
- 1.Qd6?
- threat
- 2.Qd1#
- 2.Qd5#
- 2.Qh6#
- 1...b1Q
- 2.Qh6#
- 1...b1B
- 2.Qd1#
- 2.Qh6#
- 1...b1R
- 2.Qd5#
- 2.Qh6#
- 1...Rc2
- 2.Qd1#
- 1...Rc1
- 2.Rh7#
- 2.Qd5#
- 2.Qh6#
- 1...Rc4
- 2.Qd1#
- 1...Rc5
- 2.Qd1#
- 1...Rc6
- 2.Rh7#
- 2.Qd1#
- 2.Qd5#
- 2.Qxc6#
- 1...Rd7
- 2.Qh6#
- 1...Re7
- 2.Qd1#
- 2.Qh6#
- 1...Rf7
- 2.Qh6#
- 1...Rh7
- 2.Rxh7#
- 2.Qd1#
- 2.Qd5#
- 2.Qc6#
- 1...Rg7+!
- threat
- 1.Qf8?
- threat
- 2.Qh6#
- 2.Qf1#
- 2.Qf3#
- 1...b1Q
- 2.Qh6#
- 2.Qf3#
- 1...b1R
- 2.Qh6#
- 2.Qf3#
- 1...Rc2
- 2.Qf1#
- 1...Rc1
- 2.Rh7#
- 2.Qh6#
- 2.Qf3#
- 2.Qh8#
- 1...Rc4
- 2.Qf1#
- 2.Qf3#
- 1...Rc5
- 2.Qf1#
- 2.Qf3#
- 1...Rc6
- 2.Qf1#
- 2.Qf3#
- 1...Rf7
- 2.Qh6#
- 1...Rh7
- 2.Rxh7#
- 2.Qf1#
- 2.Qf3#
- 1...Rg7+!
- threat
- 1.Qa5?
- threat
- 2.Qe1#
- 2.Qd5#
- 2.Qh5#
- 1...b1Q
- 2.Qh5#
- 1...b1B
- 2.Qe1#
- 2.Qh5#
- 1...b1R
- 2.Qd5#
- 2.Qh5#
- 1...Rc2
- 2.Qe1#
- 1...Rc1
- 2.Rh7#
- 2.Qd5#
- 2.Qh5#
- 1...Rc3
- 2.Rh7#
- 2.Qd5#
- 2.Qh5#
- 1...Rc4
- 2.Qe1#
- 1...Rc5
- 2.Qe1#
- 1...Rd7
- 2.Qe1#
- 2.Qh5#
- 1...Re7
- 2.Qe1#
- 2.Qh5#
- 1...Rf7
- 2.Qh5#
- 1...Rh7
- 2.Rxh7#
- 2.Qe1#
- 2.Qd5#
- 1...Rg7+!
- threat
- 1.Rxc7?
- Keys
- 1.Qa8!
- threat
- 2.Rxc7#
- 1...Rg7+
- 2.Rxg7#
- 1...Rxb7
- 2.Qxb7#
- 1...b1Q
- 2.Rxb1#
- 1...b1B
- 2.Rxb1#
- 1...b1R
- 2.Rxb1#
- 1...Rc2
- 2.Rh7#
- 1...Rc1
- 2.Rh7#
- 2.Qh8#
- 1...Rc3
- 2.Rh7#
- 2.Qh8#
- 1...Rc4
- 2.Rh7#
- 1...Rc5
- 2.Rh7#
- 1...Rc6
- 2.Rh7#
- 1...Rd7
- 2.Rxd7#
- 1...Re7
- 2.Rxe7#
- 1...Rf7
- 2.Rxf7#
- 1...Rh7
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rxh7#
- 1...Rc8
- 2.Rh7#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 3
- Sets
- R(c);OGATE::R(D)
- R(c);OGATE,P_PINB(B)::R(D)
- R(c);OGATE::R(D),XR(c)
- Tries
- Try
- R(D);XR(c)
- Threat
- DUALS(2)
- Vars
- P(b);::R(D)
- Refutation
- P(b);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(b);::QAR(A)
- R(c);::QAR(A)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(b);::QAR(A)
- R(c);::QAR(A)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(c);::QAR2(A)
- R(c);::QAR(A)
- Refutation
- R(c);CHECK
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(b);::QAR(A)
- R(c);::QAR(A)
- Refutation
- R(c);CHECK
- Try
- Actual
- Q(A);
- Threat
- QAB(A)+R(D),XR(c)
- Vars
- R(c);CHECK,OGATE::QAB(A)+R(D),XR(c)
- R(c);OGATE,P_SPINR(c),XR(D)::QAB(A),XR(c)
- P(b);OGATE::QAB(A)+R(D),DCHECK,XQ(b)
- P(b);OGATE::QAB(A)+R(D),DCHECK,XB(b)
- P(b);OGATE::QAB(A)+R(D),DCHECK,XR(b)
- R(c);OGATE::QAB(A)+R(D),DCHECK
- R(c);OGATE::R(D)
- R(c);OGATE::QAB(A)+R(D),XR(c)
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).