MESON Chess Problem Database
Problem Display
PID: 141278 (8/4q3/8/5B2/4R3/6Q1/3P4/3K3k w - - 0 1)
von Alvensleben, Wichard Udo Reinhard
Deutsche Schachzeitung, 1987
#2
5 + 2
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Re1#
- 2.Rh4#
- 1...Qb4
- 2.Re1#
- 1...Qh4
- 2.Re1#
- 2.Rxh4#
- 1...Qc5
- 2.Rh4#
- 1...Qg5
- 2.Re1#
- 1...Qd6
- 2.Re1#
- 2.Rh4#
- 1...Qf6
- 2.Re1#
- 1...Qd8
- 2.Re1#
- 1...Qf8
- 2.Re1#
- 2.Rh4#
- 1...Qxe4
- 2.Bxe4#
- 1...Qe5
- 2.Rh4#
- 1...Qe6
- 2.Rh4#
- 1...Qa7
- 2.Rh4#
- 1...Qb7
- 2.Re1#
- 2.Rh4#
- 1...Qc7
- 2.Re1#
- 2.Rh4#
- 1...Qd7
- 2.Re1#
- 2.Rh4#
- 1...Qf7
- 2.Re1#
- 2.Rh4#
- 1...Qg7
- 2.Re1#
- 2.Rh4#
- 1...Qh7
- 2.Re1#
- 1...Qe8
- 2.Rh4#
- 1...Qa3
- Tries
- 1.Bh3?
- threat
- 2.Qg2#
- 1...Qg5
- 2.Re1#
- 1...Qg7
- 2.Re1#
- 1...Qxe4!
- threat
- 1.Re2?
- threat
- 2.Rh2#
- 2.Qe1#
- 2.Qh2#
- 2.Qg2#
- 1...Qh4
- 2.Re1#
- 2.Qg2#
- 1...Qc5
- 2.Be4#
- 2.Rh2#
- 2.Qh2#
- 2.Qg2#
- 1...Qg5
- 2.Be4#
- 2.Re1#
- 2.Rh2#
- 2.Qh2#
- 1...Qd6
- 2.Be4#
- 2.Re1#
- 2.Rh2#
- 2.Qe1#
- 2.Qg2#
- 1...Qe3
- 2.Rh2#
- 2.Qh2#
- 2.Qg2#
- 1...Qe4
- 2.Bxe4#
- 2.Rh2#
- 2.Qe1#
- 2.Qh2#
- 1...Qe5
- 2.Rh2#
- 2.Qe1#
- 2.Qg2#
- 1...Qa7
- 2.Be4#
- 2.Rh2#
- 2.Qh2#
- 2.Qg2#
- 1...Qb7
- 2.Re1#
- 2.Rh2#
- 2.Qe1#
- 2.Qh2#
- 1...Qc7
- 2.Be4#
- 2.Re1#
- 2.Rh2#
- 2.Qe1#
- 2.Qg2#
- 1...Qg7
- 2.Be4#
- 2.Re1#
- 2.Rh2#
- 2.Qh2#
- 1...Qh7
- 2.Re1#
- 2.Qe1#
- 2.Qg2#
- 1...Qxe2+!
- threat
- 1.Re5?
- threat
- 2.Be4#
- 1...Qf6
- 2.Re1#
- 1...Qa3
- 2.Re1#
- 1...Qb4
- 2.Re1#
- 1...Qh4
- 2.Re1#
- 1...Qf8
- 2.Re1#
- 1...Qb7
- 2.Re1#
- 1...Qf7
- 2.Re1#
- 1...Qh7
- 2.Re1#
- 1...Qxe5!
- threat
- 1.Re6?
- threat
- 2.Be4#
- 1...Qf6
- 2.Re1#
- 1...Qa3
- 2.Re1#
- 2.Rh6#
- 1...Qb4
- 2.Re1#
- 1...Qh4
- 2.Re1#
- 1...Qf8
- 2.Re1#
- 1...Qb7
- 2.Re1#
- 2.Rh6#
- 1...Qf7
- 2.Re1#
- 1...Qh7
- 2.Re1#
- 1...Qxe6!
- threat
- 1.d3?
- 1...Qxe4
- 2.Bxe4#
- 1...Qf6
- 2.Re1#
- 1...Qa3
- 2.Re1#
- 2.Rh4#
- 1...Qh4
- 2.Re1#
- 2.Rxh4#
- 1...Qc5
- 2.Rh4#
- 1...Qg5
- 2.Re1#
- 1...Qd6
- 2.Re1#
- 2.Rh4#
- 1...Qd8
- 2.Re1#
- 1...Qf8
- 2.Re1#
- 2.Rh4#
- 1...Qe5
- 2.Rh4#
- 1...Qe6
- 2.Rh4#
- 1...Qa7
- 2.Rh4#
- 1...Qb7
- 2.Re1#
- 2.Rh4#
- 1...Qc7
- 2.Re1#
- 2.Rh4#
- 1...Qd7
- 2.Re1#
- 2.Rh4#
- 1...Qf7
- 2.Re1#
- 2.Rh4#
- 1...Qg7
- 2.Re1#
- 2.Rh4#
- 1...Qh7
- 2.Re1#
- 1...Qe8
- 2.Rh4#
- 1...Qb4!
- 1...Qxe4
- 1.Bh3?
- Keys
- 1.d4!
- 1...Qxe4
- 2.Bxe4#
- 1...Qf6
- 2.Re1#
- 1...Qa3
- 2.Re1#
- 2.Rh4#
- 1...Qb4
- 2.Rh4#
- 1...Qh4
- 2.Re1#
- 2.Rxh4#
- 1...Qc5
- 2.Re1#
- 2.Rh4#
- 1...Qg5
- 2.Re1#
- 1...Qd6
- 2.Re1#
- 2.Rh4#
- 1...Qd8
- 2.Re1#
- 1...Qf8
- 2.Re1#
- 2.Rh4#
- 1...Qe5
- 2.Rh4#
- 1...Qe6
- 2.Rh4#
- 1...Qa7
- 2.Re1#
- 2.Rh4#
- 1...Qb7
- 2.Re1#
- 2.Rh4#
- 1...Qc7
- 2.Re1#
- 2.Rh4#
- 1...Qd7
- 2.Re1#
- 2.Rh4#
- 1...Qf7
- 2.Re1#
- 2.Rh4#
- 1...Qg7
- 2.Re1#
- 2.Rh4#
- 1...Qh7
- 2.Re1#
- 1...Qe8
- 2.Rh4#
- 1...Qxe4
- 1.d4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(b);N_GUARD::R(D)
- Q(b);N_GUARD,P_PINP(B)::R(D)
- Q(b);OGATE,XR(D)::B(E),XQ(b)
- Tries
- Try
- B(E);
- Threat
- QAB1(C)
- Vars
- Q(b);N_GUARD::R(D)
- Refutation
- Q(b);XR(D)
- Try
- R(D);
- Threat
- DUALS(4)
- Refutation
- Q(b);CHECK,XR(D)
- Try
- R(D);
- Threat
- B(E)
- Vars
- Q(b);N_GUARD::R(D)
- Refutation
- Q(b);XR(D)
- Try
- R(D);
- Threat
- B(E)
- Vars
- Q(b);N_GUARD::R(D)
- Refutation
- Q(b);XR(D)
- Try
- P(B);
- Vars
- Q(b);OGATE,XR(D)::B(E),XQ(b)
- Q(b);N_GUARD::R(D)
- Q(b);N_GUARD,P_PINP(B)::R(D)
- Refutation
- Q(b);
- Try
- Actual
- P(B);
- Vars
- Q(b);OGATE,XR(D)::B(E),XQ(b)
- Q(b);N_GUARD::R(D)
- Q(b);N_GUARD,P_PINP(B)::R(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).