MESON Chess Problem Database
Problem Display
PID: 250632 (B5K1/4p1P1/8/1bp4R/2pk1n1r/4N1Q1/1bR1P3/3nN3 w - - 0 1)
Ahmels, Christian
Schach-Aktiv, 1986
#2
9 + 9
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qxf4#
- 1...Rh2
- 2.Qxf4#
- 1...Rh3
- 2.Qxf4#
- 1...Rxh5
- 2.Qxf4#
- 1...Ba4
- 2.Rxc4#
- 1...Bc6
- 2.Rxc4#
- 1...Bd7
- 2.Rxc4#
- 1...Be8
- 2.Rxc4#
- 1...Sxe3
- 2.Sf3#
- 1...Sxe2
- 2.Sf5#
- 2.Qe5#
- 1...Sg2
- 2.Sf5#
- 2.Qe5#
- 1...Sd3
- 2.Sf5#
- 1...Sh3
- 2.Sf5#
- 2.Qe5#
- 1...Sd5
- 2.Qe5#
- 1...Sxh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 2.Qe5#
- 1...Sg6
- 2.Sf5#
- 1...e5
- 2.Sf5#
- 1...Rh1
- Tries
- 1.Sxd1?
- threat
- 2.Sf3#
- 2.Qf2#
- 2.Qg1#
- 2.Qe3#
- 2.e3#
- 1...Rxh5
- 2.Sf3#
- 2.Qxf4#
- 2.Qe3#
- 1...Sxe2
- 2.Rd2#
- 2.Qf2#
- 2.Qe5#
- 2.Qe3#
- 1...Sxh5
- 2.Sf3#
- 2.Rd2#
- 2.Qe3#
- 2.e3#
- 1...Bc6
- 2.Qe3#
- 1...Sd5
- 2.Qe5#
- 1...Rg4
- 2.Sf3#
- 2.Qf2#
- 2.Qe3#
- 2.e3#
- 1...Rh1
- 2.Sf3#
- 2.Qf2#
- 2.Qxf4#
- 2.Qe3#
- 2.e3#
- 1...Rh2
- 2.Sf3#
- 2.Qxf4#
- 2.Qe3#
- 2.e3#
- 1...Rh3
- 2.Sf3#
- 2.Qxf4#
- 2.e3#
- 1...Bc1
- 2.Sf3#
- 2.Qc3#
- 1...Sg2
- 2.Sf3#
- 2.Rd2#
- 2.Qe5#
- 1...Sd3
- 2.Sf3#
- 2.Qe3#
- 2.e3#
- 1...Sh3
- 2.Sf3#
- 2.Rd2#
- 2.Qe5#
- 2.Qe3#
- 2.e3#
- 1...c3!
- threat
- 1.Rd2+?
- 1...Sd3
- 2.Qe5#
- 1...Kc3!
- 1...Sd3
- 1.Rd5+?
- 1...Ke4
- 2.Qf3#
- 1...Sxd5!
- 1...Ke4
- 1.Qg5?
- threat
- 2.Qxc5#
- 2.Qe5#
- 1...Rxh5
- 2.Qxf4#
- 1...Sxh5
- 2.Sf3#
- 1...Bc6
- 2.Qe5#
- 1...Ba3
- 2.Qe5#
- 1...Sd3
- 2.Sf3#
- 1...Sd5
- 2.Qe5#
- 1...Se6
- 2.Sf3#
- 2.Qe5#
- 1...Sg6
- 2.Sf3#
- 2.Qxc5#
- 1...e5
- 2.Sf5#
- 2.Qxe5#
- 1...Kxe3!
- threat
- 1.Sxd1?
- Keys
- 1.Rc1!
- threat
- 2.S3c2#
- 1...Rxh5
- 2.Qxf4#
- 1...Sxe3
- 2.Sf3#
- 1...Bc6
- 2.Rxc4#
- 1...Sd5
- 2.Qe5#
- 1...Ba4
- 2.Rxc4#
- 1...Sd3
- 2.Sf5#
- 1...c3
- 2.S1c2#
- threat
- 1.Rc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- R(f);N_GUARD::QAR2(E),XS(e)
- R(f);N_GUARD,XR(F)::QAR2(E),XS(e)
- B(g);N_GUARD::R1(B),XP(c)
- S(a);SBLOCK,XS(D)::S(A)
- S(e);::S(D)
- S(e);OGATE::QAB1(E)
- S(e);XR(F)::S(D)
- P(i);SBLOCK::S(D)
- Tries
- Try
- S(D);XS(a)
- Threat
- DUALS(5)
- Vars
- B(g);::QAB1(E)
- S(e);OGATE::QAB1(E)
- Refutation
- P(c);
- Try
- R(B);CHECK
- Vars
- S(e);OGATE,P_SPINS(e)::QAB1(E)
- Refutation
- K(d);S_FLIGHT
- Try
- R(F);CHECK
- Vars
- K(d);P-FLIGHT,S_CUTS(e)::QAB1(E)
- Refutation
- S(e);XR(F)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD,XR(F)::QAR2(E),XS(e)
- S(e);XR(F)::S(A)
- B(g);::QAB1(E)
- B(b);::QAB1(E)
- S(e);::S(A)
- S(e);::QAB1(E)
- Refutation
- K(d);P_SPINS(e),S_FLIGHT,XS(D)
- Try
- Actual
- R(B);
- Threat
- S(D)
- Vars
- R(f);N_GUARD,XR(F)::QAR2(E),XS(e)
- S(a);SBLOCK,XS(D)::S(A)
- B(g);N_GUARD::R1(B),XP(c)
- S(e);OGATE::QAB1(E)
- S(e);::S(D)
- P(c);SBLOCK::S(A)
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).