MESON Chess Problem Database
Problem Display
PID: 207979 (BR5r/PR5P/7K/8/8/5N2/7p/rQ4nk w - - 0 1)
Witt, Andreas
Badische Neueste Nachrichten, 1992
#2
8 + 5
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Tries
- 1.Sxg1?
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...hxg1Q
- 2.Rb2#
- 1...hxg1S
- 2.Rb2#
- 1...hxg1B
- 2.Rb2#
- 1...hxg1R
- 2.Rb2#
- 1...Ra2
- 2.Rb2#
- 1...Ra3
- 2.Rb3#
- 1...Ra4
- 2.Rb4#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Re8
- 2.Re7#
- 1...Rf8
- 2.Rf7#
- 1...Rg8
- 2.Rg7#
- 1...Kg2!
- threat
- 1.Sd2?
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...Ra3
- 2.Rb3#
- 1...Ra4
- 2.Rb4#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Re8
- 2.Re7#
- 1...Rf8
- 2.Rf7#
- 1...Rg8
- 2.Rg7#
- 1...Kg2!
- threat
- 1.Sd4?
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...Ra2
- 2.Rb2#
- 1...Ra3
- 2.Rb3#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Re8
- 2.Re7#
- 1...Rf8
- 2.Rf7#
- 1...Rg8
- 2.Rg7#
- 1...Kg2!
- threat
- 1.Se5?
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...Ra2
- 2.Rb2#
- 1...Ra3
- 2.Rb3#
- 1...Ra4
- 2.Rb4#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Rf8
- 2.Rf7#
- 1...Rg8
- 2.Rg7#
- 1...Kg2!
- threat
- 1.Sg5?
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...Ra2
- 2.Rb2#
- 1...Ra3
- 2.Rb3#
- 1...Ra4
- 2.Rb4#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Re8
- 2.Re7#
- 1...Rf8
- 2.Rf7#
- 1...Kg2!
- threat
- 1.Sxg1?
- Keys
- 1.Sh4!
- threat
- 2.Rb2#
- 2.Rb3#
- 2.Rb4#
- 2.Rb5#
- 2.Rb6#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 1...Ra6+
- 2.Rb6#
- 1...Rxh7+
- 2.Rxh7#
- 1...Rxb1
- 2.Rxb1#
- 1...Rxa7
- 2.Rxa7#
- 1...Rxb8
- 2.Rxb8#
- 1...Ra2
- 2.Rb2#
- 1...Ra3
- 2.Rb3#
- 1...Ra4
- 2.Rb4#
- 1...Ra5
- 2.Rb5#
- 1...Rc8
- 2.Rc7#
- 1...Rd8
- 2.Rd7#
- 1...Re8
- 2.Re7#
- 1...Rf8
- 2.Rf7#
- 1...Rg8
- 2.Rg7#
- threat
- 1.Sh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(B);XS(b)
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- P(d);P_SPINQ(d),XS(B)::B(G)+R(E)
- P(d);P_SPINS(d),XS(B)::B(G)+R(E)
- P(d);P_SPINB(d),XS(B)::B(G)+R(E)
- P(d);P_SPINR(d),XS(B)::B(G)+R(E)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
- Refutation
- K(c);S_FLIGHT
- Try
- S(B);
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);N_SPINS(b),OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
- Refutation
- K(c);N_SPINS(b),S_FLIGHT
- Try
- S(B);
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);N_SPINS(b),OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
- Refutation
- K(c);N_SPINS(b),S_FLIGHT
- Try
- S(B);
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);N_SPINS(b),OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
- Refutation
- K(c);N_SPINS(b),S_FLIGHT
- Try
- S(B);
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);N_SPINS(b),OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
- Refutation
- K(c);N_SPINS(b),S_FLIGHT
- Try
- Actual
- S(B);
- Threat
- DUALS(10)
- Vars
- R(a);CHECK::B(G)+R(E)
- R(e);CHECK,OGATE,XP(F)::B(G)+R(E),XR(e)
- R(a);N_SPINS(b),OGATE,XQ(A)::B(G)+R(E),XR(a)
- R(a);OGATE,XP(D)::B(G)+R(E),XR(a)
- R(e);N_PINP(F),OGATE,XR(H)::B(G)+R(E),XR(e)
- R(a);::B(G)+R(E)
- R(e);N_PINP(F)::B(G)+R(E)
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).