MESON Chess Problem Database
Problem Display
PID: 82020 (7B/2q1r3/8/nQp4N/4k1r1/3N4/B1KPP3/b4R2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Kiss (Janos)-80 JT, 1990
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sxc5#
- 1...Qg3
- 2.Sxc5#
- 1...Qb8
- 2.Sxc5#
- 1...Qd8
- 2.Sxc5#
- 1...Qb7
- 2.Sxc5#
- 1...Qd7
- 2.Sxc5#
- 1...Rf4
- 2.Sg3#
- 1...Sc6
- 2.Sxc5#
- 1...c4
- 2.Sf2#
- 2.Qf5#
- 1...Qh2
- Tries
- 1.Sg3+?
- 1...Qxg3
- 2.Sxc5#
- 1...Rxg3!
- 1...Qxg3
- 1.Rf4+?
- 1...Rxf4
- 2.Sg3#
- 1...Qxf4!
- 1...Rxf4
- 1.Qc4+?
- 1...Bd4
- 2.Sf6#
- 2.Qd5#
- 1...Sxc4!
- 1...Bd4
- 1.Qc6+?
- 1...Sxc6
- 2.Sxc5#
- 1...Qxc6!
- 1...Sxc6
- 1.Qd7?
- threat
- 2.Sf2#
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Qxd7
- 2.Sxc5#
- 1...Bxh8
- 2.Qd5#
- 1...Qh2
- 2.Sxc5#
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Qg3
- 2.Sxc5#
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Qf4
- 2.Sxc5#
- 2.Bd5#
- 2.Qd5#
- 1...Qe5
- 2.Sf2#
- 1...Qd6
- 2.Sf2#
- 2.Qf5#
- 1...Qd8
- 2.Sf2#
- 2.Sxc5#
- 2.Bd5#
- 2.Qxg4#
- 2.Qf5#
- 1...Qc6
- 2.Sf2#
- 2.Qxg4#
- 2.Qf5#
- 1...Qb7
- 2.Sf2#
- 2.Sxc5#
- 2.Qxg4#
- 2.Qf5#
- 1...Qc8
- 2.Sf2#
- 2.Bd5#
- 2.Qd5#
- 1...Rg2
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Rf4
- 2.Sg3#
- 2.Bd5#
- 2.Qd5#
- 1...Rg5
- 2.Sf2#
- 1...Rgg7
- 2.Qd5#
- 1...Re5
- 2.Sf2#
- 2.Sf6#
- 2.Qxg4#
- 1...Re6
- 2.Bd5#
- 2.Qd5#
- 1...Rf7
- 2.Bd5#
- 2.Qd5#
- 1...Reg7
- 2.Qd5#
- 1...Bd4
- 2.Bd5#
- 2.Qf5#
- 2.Qd5#
- 1...Be5
- 2.Sf2#
- 2.Qd5#
- 1...Bf6
- 2.Sxf6#
- 2.Qd5#
- 1...Bg7
- 2.Qd5#
- 1...Sb3
- 2.Sf2#
- 2.Qf5#
- 1...Sc4
- 2.Sf2#
- 2.Qf5#
- 1...c4
- 2.Sf2#
- 2.Qf5#
- 1...Rxd7!
- threat
- 1.Qb7+?
- 1...Qc6
- 2.Sxc5#
- 1...Qxb7
- 2.Sxc5#
- 1...Sc6
- 2.Sxc5#
- 1...Sxb7!
- 1...Qc6
- 1.Sg3+?
- Keys
- 1.Qxc5!
- threat
- 2.Sf2#
- 2.Bd5#
- 1...Qxc5+
- 2.Sxc5#
- 1...Sc4
- 2.Sf2#
- 2.Qf5#
- 1...Qh2
- 2.Bd5#
- 2.Qe3#
- 2.Qd5#
- 2.Qf5#
- 1...Qg3
- 2.Bd5#
- 2.Qd5#
- 2.Qf5#
- 1...Qf4
- 2.Qd5#
- 1...Qe5
- 2.Qe3#
- 1...Qd6
- 2.Sf2#
- 2.Qe3#
- 2.Qf5#
- 1...Qd8
- 2.Sf2#
- 2.Qe3#
- 2.Qf5#
- 1...Qc6
- 2.Sf2#
- 1...Qb7
- 2.Sf2#
- 2.Qe3#
- 2.Qf5#
- 1...Qd7
- 2.Sf2#
- 2.Qe3#
- 1...Rg2
- 2.Bd5#
- 1...Rf4
- 2.Sg3#
- 1...Rg5
- 2.Sf2#
- 1...Re5
- 2.Sf6#
- 1...Rd7
- 2.Sf2#
- 1...Rf7
- 2.Bd5#
- 1...Bd4
- 2.Bd5#
- 1...Be5
- 2.Bd5#
- 1...Sb3
- 2.Sf2#
- threat
- 1.Qxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 7
- Sets
- Q(f);N_GUARD::S(F),XP(e)
- R(c);N_GUARD,S_CUTQ(f)::S(H)
- S(d);S_CUTQ(f)::S(F),XP(e)
- Tries
- Try
- S(H);CHECK
- Vars
- Q(f);XS(H)::S(F),XP(e)
- Refutation
- R(c);XS(H)
- Try
- R(A);CHECK
- Vars
- R(c);XR(A)::S(H)
- Refutation
- Q(f);XR(A)
- Try
- Q(G);CHECK
- Refutation
- S(d);XQ(G)
- Try
- Q(G);CHECK
- Vars
- S(d);XQ(G)::S(F),XP(e)
- Refutation
- Q(f);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- Q(f);N_GUARD,XQ(G)::S(F),XP(e)
- B(a);XB(I)::QAB1(G)
- Q(f);::S(F)
- R(c);::S(F)
- R(c);::QAB1(G)
- R(g);::QAB1(G)
- B(a);::QAB1(G)
- Refutation
- R(g);XQ(G)
- Try
- Q(G);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(F),XP(e)
- Q(f);XQ(G)::S(F),XP(e)
- S(d);P_SPINS(d)::S(F),XP(e)
- Refutation
- S(d);XQ(G)
- Try
- Actual
- Q(G);P_SPINQ(G),XP(e)
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,XQ(G)::S(F),XQ(f)
- Q(f);N_PINQ(G)::QAB1(G)
- Q(f);N_PINQ(G)::QAR1(G)
- Q(f);::S(F)
- R(c);::B(B)
- R(c);N_GUARD,S_CUTQ(f)::S(H)
- R(c);::S(F)
- R(g);S_CUTB(a)::S(H)
- R(g);::S(F)
- R(g);::B(B)
- B(a);::B(B)
- S(d);::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).