MESON Chess Problem Database
Problem Display
PID: 142545 (3RKb2/4p3/n3k3/3NPN2/1p2P3/7R/1Q1r3B/1B3r2 w - - 0 1)
Heyl, Peter
3rd Prize, Sachsische Zeitung, 2005
#2
10 + 7
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rxb1
- 2.Sf4#
- 1...Rc1
- 2.Sf4#
- 1...Rfd1
- 2.Sf4#
- 1...Re1
- 2.Sf4#
- 1...Rg1
- 2.Sf4#
- 1...Rh1
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Rxf5
- 2.exf5#
- 1...Rxb2
- 2.Sd4#
- 1...Rc2
- 2.Sd4#
- 1...Re2
- 2.Sd4#
- 1...Rf2
- 2.Sd4#
- 1...Rg2
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Rxd5
- 2.exd5#
- 1...Bh6
- 2.Rxh6#
- 1...Bg7
- 2.Sxg7#
- 1...Sc5
- 2.Sc7#
- 1...Sc7+
- 2.Sxc7#
- 1...Sb8
- 2.Sc7#
- 1...Rxb1
- Tries
- 1.Sfxe7?
- threat
- 2.Rd6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxd5
- 2.exd5#
- 1...Bxe7!
- threat
- 1.Ba2?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxb2
- 2.Sc7#
- 2.Sd4#
- 1...Rxd5
- 2.Sd4#
- 2.Bxd5#
- 1...Rf4
- 2.Sxf4#
- 2.Sc7#
- 1...Rd4
- 2.Sc7#
- 2.Sxd4#
- 1...b3!
- threat
- 1.Rc3?
- threat
- 2.Rc6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxd5
- 2.exd5#
- 1...bxc3
- 2.Qb6#
- 1...Rc2
- 2.Sd4#
- 1...Sc5
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...Rc1!
- threat
- 1.Rg3?
- threat
- 2.Rg6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxf5
- 2.exf5#
- 1...Rg1
- 2.Sf4#
- 1...Bg7
- 2.Sxg7#
- 1...Rg2!
- threat
- 1.Ra8?
- threat
- 2.Rxa6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sd4#
- 1...Sc5
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...Rxd5!
- threat
- 1.Rb8?
- threat
- 2.Rb6#
- 1...Sc7+
- 2.Sxc7#
- 1...Sxb8
- 2.Sc7#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sd4#
- 1...Rxd5!
- threat
- 1.Rc8?
- threat
- 2.Rc6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sd4#
- 1...Sb8
- 2.Sc7#
- 1...Rxd5!
- threat
- 1.Qa1?
- threat
- 2.Qxa6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxd5
- 2.exd5#
- 1...Rc1
- 2.Sf4#
- 1...Rf4
- 2.Sxf4#
- 1...Ra2
- 2.Sd4#
- 1...Rc2
- 2.Sd4#
- 1...Sc5
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...Rxh2!
- threat
- 1.Qxd2?
- threat
- 2.Sd4#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxf5
- 2.exf5#
- 1...Rf4!
- threat
- 1.Sfxe7?
- Keys
- 1.Ra3!
- threat
- 2.Rxa6#
- 1...Sc7+
- 2.Sxc7#
- 1...Rxd5
- 2.exd5#
- 1...bxa3
- 2.Qb6#
- 1...Rc1
- 2.Sf4#
- 1...Rc2
- 2.Sd4#
- 1...Sc5
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- threat
- 1.Ra3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- R(a);N_GUARD,XB(A)::S(F)
- R(a);N_GUARD::S(F)
- R(a);N_GUARD::S(F),XR(a)
- R(a);OGATE,XS(H)::P(E),XR(a)
- R(b);N_GUARD,XQ(B)::S(H)
- R(b);N_GUARD::S(H)
- R(b);N_GUARD::S(H),XR(b)
- R(b);OGATE,XS(F)::P(E),XR(b)
- B(g);N_GUARD::R(D),XB(g)
- B(g);N_GUARD::S(H),XB(g)
- S(d);N_GUARD::S(F)
- S(d);CHECK,N_GUARD::S(F),XS(d)
- Tries
- Try
- S(H);XP(f)
- Threat
- R1(I)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(b);OGATE,XS(F)::P(E),XR(b)
- Refutation
- B(g);XS(H)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- S(d);CHECK::B(A)+S(F),DCHECK,XS(d)
- Refutation
- P(c);
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(b);OGATE,XS(F)::P(E),XR(b)
- P(c);OGATE,XR(D)::QAR(B)
- R(b);N_GUARD::S(H)
- S(d);N_GUARD::S(F)
- Refutation
- R(a);
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(a);OGATE,XS(H)::P(E),XR(a)
- R(a);N_GUARD::S(F)
- B(g);N_GUARD::S(H),XB(g)
- Refutation
- R(b);
- Try
- R(I);
- Threat
- R(I),XS(d)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(a);N_GUARD::S(F)
- R(b);N_GUARD::S(H)
- S(d);N_GUARD::S(F)
- Refutation
- R(b);XS(F)
- Try
- R(I);
- Threat
- R(I)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- S(d);N_GUARD,XR(I)::S(F)
- R(a);N_GUARD::S(F)
- R(b);N_GUARD::S(H)
- Refutation
- R(b);XS(F)
- Try
- R(I);
- Threat
- R(I)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(a);N_GUARD::S(F)
- R(b);N_GUARD::S(H)
- S(d);N_GUARD::S(F)
- Refutation
- R(b);XS(F)
- Try
- Q(B);
- Threat
- QAR(B),XS(d)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(b);OGATE,XS(F)::P(E),XR(b)
- R(a);N_GUARD::S(F)
- R(a);N_GUARD::S(F),XR(a)
- R(b);N_GUARD::S(H)
- S(d);N_GUARD::S(F)
- Refutation
- R(b);XB(C)
- Try
- Q(B);XR(b)
- Threat
- S(H)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(a);OGATE,XS(H)::P(E),XR(a)
- Refutation
- R(a);
- Try
- Actual
- R(D);
- Threat
- R(D),XS(d)
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- R(b);OGATE,XS(F)::P(E),XR(b)
- P(c);OGATE,XR(D)::QAR(B)
- R(a);N_GUARD::S(F)
- R(b);N_GUARD::S(H)
- S(d);N_GUARD::S(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).