MESON Chess Problem Database
Problem Display
PID: 82140 (K7/2p1N1R1/2p1QnBn/2N5/p4k2/1p3p2/5P2/q1b2bR1 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1970
#2
8 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Qe3#
- 1...Ba3
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 2.fxe3#
- 1...Bd3
- 2.Sxd3#
- 1...Bh3
- 2.Sd3#
- 1...Se4
- 2.Qxe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sfg8
- 2.Qe4#
- 1...Sg4
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sf7
- 2.Qf5#
- 1...Shg8
- 2.Qf5#
- 1...Bb2
- Tries
- 1.Sd5+?
- 1...Sxd5
- 2.Qe4#
- 1...cxd5!
- 1...Sxd5
- 1.Bb1?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Qxb1!
- threat
- 1.Bd3?
- threat
- 2.Sg6#
- 1...Bxd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Bg2!
- threat
- 1.Be4?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Shg4
- 2.Qf5#
- 1...Sfg4!
- threat
- 1.Bf5?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4!
- threat
- 1.Bh5?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Qb1!
- threat
- 1.Bf7?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Qb1!
- threat
- 1.Bh7?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Qb1!
- threat
- 1.Be8?
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- 1...Qb1!
- threat
- 1.Rg4+?
- 1...Shxg4
- 2.Qf5#
- 1...Sfxg4!
- 1...Shxg4
- 1.Qd6+?
- 1...Qe5
- 2.Se6#
- 1...cxd6!
- 1...Qe5
- 1.Qxf6+?
- 1...Sf5
- 2.Qxf5#
- 1...Qxf6!
- 1...Sf5
- 1.Sd5+?
- Keys
- 1.Bc2!
- threat
- 2.Sg6#
- 1...Bg2
- 2.Sd3#
- 1...Bd3
- 2.Sxd3#
- 1...Sfg4
- 2.Qe4#
- 1...Shg4
- 2.Qf5#
- threat
- 1.Bc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- B(b);N_GUARD::QAB1(D)
- B(c);N_GUARD::S(C),XB(c)
- B(c);N_GUARD::S(C)
- S(i);N_GUARD::QAR1(D),XS(i)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D),XS(j)
- Tries
- Try
- S(F);CHECK
- Vars
- S(i);XS(F)::QAR1(D)
- Refutation
- P(h);XS(F)
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- Q(a);XB(E)
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);XB(E)::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- B(c);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- S(j);N_GUARD::QAR1(D)
- Refutation
- S(i);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- S(i);N_GUARD::QAR1(D)
- Refutation
- S(j);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- Q(a);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- Q(a);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- Q(a);
- Try
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
- Refutation
- Q(a);
- Try
- R(A);CHECK
- Vars
- S(j);XR(A)::QAR1(D)
- Refutation
- S(i);XR(A)
- Try
- Q(D);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(C)
- Refutation
- P(k);XQ(D)
- Try
- Q(D);CHECK,XS(i)
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAR1(D),XS(j)
- Refutation
- Q(a);XQ(D)
- Try
- Actual
- B(E);
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(i);N_GUARD::QAR1(D)
- S(j);N_GUARD::QAR1(D)
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).