MESON Chess Problem Database
Problem Display
PID: 232413 (2b3Kb/1nN1B3/4P2R/n1p1k3/1NR1B1P1/2Pp2P1/3r1PP1/5r1q w - - 0 1)
Degener, Udo
Freie Presse, 1977
#2
13 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxg2
- 2.Rh5#
- 1...Qg1
- 2.Rh5#
- 1...Qh5
- 2.Rxh5#
- 1...Ra1
- 2.f4#
- 1...Rb1
- 2.f4#
- 1...Rc1
- 2.f4#
- 1...Rfd1
- 2.f4#
- 1...Re1
- 2.f4#
- 1...Rg1
- 2.f4#
- 1...Ra2
- 2.Sxd3#
- 1...Rb2
- 2.Sxd3#
- 1...Rc2
- 2.Sxd3#
- 1...Re2
- 2.Sxd3#
- 1...Rxf2
- 2.Sxd3#
- 1...Bxe6+
- 2.Rxe6#
- 1...Sb3
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Qxg2
- Tries
- 1.Bxd3?
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Qxg2
- 2.Rh5#
- 1...Rxd3
- 2.Sxd3#
- 1...Sxc4
- 2.Sc6#
- 1...Re1
- 2.f4#
- 1...Sd6
- 2.Rxc5#
- 1...Re2!
- threat
- 1.Bf3?
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Sxc4
- 2.Sc6#
- 1...Re2
- 2.Sxd3#
- 1...Sd6
- 2.Rxc5#
- 1...Re1!
- threat
- 1.Bd5?
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Qxg2
- 2.Rh5#
- 1...Sxc4
- 2.Sc6#
- 1...Re1
- 2.f4#
- 1...Re2
- 2.Sxd3#
- 1...Sd6!
- threat
- 1.Bf5?
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Sxc4
- 2.Sc6#
- 1...Re1
- 2.f4#
- 1...Re2
- 2.Sxd3#
- 1...Sd6
- 2.Rxc5#
- 1...Qxg2!
- threat
- 1.Bc6?
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Qxg2
- 2.Rh5#
- 1...Sxc6
- 2.Sxc6#
- 1...Re1
- 2.f4#
- 1...Re2
- 2.Sxd3#
- 1...Sd6
- 2.Rxc5#
- 1...Sxc4!
- threat
- 1.Bg6?
- threat
- 2.Re4#
- 1...Qxg2
- 2.Rh5#
- 1...Sxc4
- 2.Sc6#
- 1...Re1
- 2.f4#
- 1...Re2
- 2.Sxd3#
- 1...Sd6
- 2.Rxc5#
- 1...Bxe6+!
- threat
- 1.Bxd3?
- Keys
- 1.Bh7!
- threat
- 2.Re4#
- 1...Bxe6+
- 2.Rxe6#
- 1...Qxg2
- 2.Rh5#
- 1...Sxc4
- 2.Sc6#
- 1...Re1
- 2.f4#
- 1...Re2
- 2.Sxd3#
- 1...Sd6
- 2.Rxc5#
- threat
- 1.Bh7!
This is a version
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(b);N_GUARD,XP(B)::R(J)
- Q(b);N_GUARD::R(J)
- Q(b);N_GUARD::R(J),XQ(b)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- R(c);N_GUARD,XP(A)::S(E),XP(d)
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Tries
- Try
- B(G);XP(d)
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- Q(b);N_GUARD,XP(B)::R(J)
- R(c);XB(G)::S(E),XR(c)
- S(e);N_GUARD,XR(F)::S(E)
- R(a);N_GUARD::P(A)
- S(h);N_GUARD::R(F),XP(f)
- Refutation
- R(c);
- Try
- B(G);
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- S(e);N_GUARD,XR(F)::S(E)
- R(c);N_GUARD::S(E),XP(d)
- S(h);N_GUARD::R(F),XP(f)
- Refutation
- R(a);
- Try
- B(G);
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- Q(b);N_GUARD,XP(B)::R(J)
- S(e);N_GUARD,XR(F)::S(E)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- Refutation
- S(h);
- Try
- B(G);
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- S(e);N_GUARD,XR(F)::S(E)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- S(h);N_GUARD::R(F),XP(f)
- Refutation
- Q(b);XP(B)
- Try
- B(G);
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- Q(b);N_GUARD,XP(B)::R(J)
- S(e);XB(G)::S(E),XS(e)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- S(h);N_GUARD::R(F),XP(f)
- Refutation
- S(e);XR(F)
- Try
- B(G);
- Threat
- R1(F)
- Vars
- Q(b);N_GUARD,XP(B)::R(J)
- S(e);N_GUARD,XR(F)::S(E)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- S(h);N_GUARD::R(F),XP(f)
- Refutation
- B(i);CHECK,XP(I)
- Try
- Actual
- B(G);
- Threat
- R1(F)
- Vars
- B(i);CHECK,OGATE,XP(I)::R1(J),XB(i)
- Q(b);N_GUARD,XP(B)::R(J)
- S(e);N_GUARD,XR(F)::S(E)
- R(a);N_GUARD::P(A)
- R(c);N_GUARD::S(E),XP(d)
- S(h);N_GUARD::R(F),XP(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).