MESON Chess Problem Database
Problem Display
PID: 152965 (Q2R4/b6p/rNb1p3/2P1kpP1/1R3n1r/p6p/5K2/2B1N1n1 w - - 0 1)
Ahues, Herbert Siegfried Oskar
3rd HM., Problemas, 1949
#2
9 + 12
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Bxf4#
- 1...Rh6
- 2.Bxf4#
- 1...Bh1
- 2.Sc4#
- 2.Sd7#
- 1...Bg2
- 2.Sc4#
- 2.Sd7#
- 1...Bf3
- 2.Sc4#
- 2.Sd7#
- 1...Ba4
- 2.Sc4#
- 1...Be4
- 2.Sc4#
- 2.Sd7#
- 1...Bd5
- 2.Sd7#
- 1...Bd7
- 2.Sxd7#
- 1...Be8
- 2.Sc4#
- 1...Bb8
- 2.Qxb8#
- 1...Se2
- 2.Sd3#
- 1...Sg2
- 2.Sd3#
- 1...Sd3+
- 2.Sxd3#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...a2
- 2.Bb2#
- 1...Rh5
- Tries
- 1.Sf3+?
- 1...Bxf3
- 2.Sc4#
- 2.Sd7#
- 1...Sxf3!
- 1...Bxf3
- 1.Rd2?
- threat
- 2.Qh8#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxa8
- 2.Sd7#
- 1...Be8
- 2.Sc4#
- 1...Bb8
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...Rh6!
- threat
- 1.Rdd4?
- threat
- 2.Qh8#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxa8
- 2.Sd7#
- 1...Rh6
- 2.Bxf4#
- 1...Bb8
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...Be8!
- threat
- 1.Rd5+?
- 1...Bxd5
- 2.Sd7#
- 2.Qh8#
- 1...Sxd5
- 2.Sd3#
- 1...exd5!
- 1...Bxd5
- 1.Rd6?
- threat
- 2.Qh8#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxa8
- 2.Sd7#
- 1...Rh6
- 2.Bxf4#
- 1...Be8
- 2.Sc4#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...Bb8!
- threat
- 1.Rd7?
- threat
- 2.Qh8#
- 1...Sd3+
- 2.Sxd3#
- 1...Rh6
- 2.Bxf4#
- 1...Bb8
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...Bxa8!
- threat
- 1.Qxc6?
- threat
- 2.Sc4#
- 2.Sd7#
- 2.Qd6#
- 2.Qc7#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxb6
- 2.Qd6#
- 1...Bb8
- 2.Sc4#
- 2.Sd7#
- 1...Sfe2
- 2.Sd3#
- 2.Sd7#
- 2.Qd6#
- 2.Qc7#
- 1...Sg2
- 2.Sd3#
- 2.Sd7#
- 2.Qd6#
- 2.Qc7#
- 1...Sd5
- 2.Sd3#
- 2.Sd7#
- 2.Qd6#
- 1...Sh5
- 2.Sd3#
- 2.Sd7#
- 2.Qd6#
- 2.Qc7#
- 1...Sg6
- 2.Sd3#
- 2.Sd7#
- 2.Qd6#
- 2.Qc7#
- 1...Rxb6!
- threat
- 1.Qb7?
- threat
- 2.Qc7#
- 2.Qg7#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxb6
- 2.Qg7#
- 1...Rh6
- 2.Bxf4#
- 2.Qc7#
- 1...Bd7
- 2.Sxd7#
- 2.Qc7#
- 1...Bb8
- 2.Qg7#
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 2.Qc7#
- 1...Bxb7!
- threat
- 1.Qxa7?
- threat
- 2.Qb8#
- 2.Qc7#
- 2.Qg7#
- 1...Sd3+
- 2.Sxd3#
- 1...Rxb6
- 2.Qc7#
- 2.Qg7#
- 1...Rh6
- 2.Bxf4#
- 2.Qb8#
- 2.Qc7#
- 1...Bb7
- 2.Qb8#
- 1...Bd7
- 2.Qb8#
- 2.Qc7#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 2.Qb8#
- 2.Qc7#
- 1...Rxa7!
- threat
- 1.Qc8?
- threat
- 2.Qc7#
- 1...Sd3+
- 2.Sxd3#
- 1...Bb8
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Bxb6!
- threat
- 1.Sf3+?
- Keys
- 1.Rd1!
- threat
- 2.Qh8#
- 1...Sd3+
- 2.Sxd3#
- 1...Bxa8
- 2.Sd7#
- 1...Rh6
- 2.Bxf4#
- 1...Be8
- 2.Sc4#
- 1...Bb8
- 2.Qxb8#
- 1...Sd5
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(e);N_GUARD::B(A),XS(d)
- B(i);::S(G)
- B(i);N_GUARD::S(G)
- B(i);N_GUARD::S(G),XB(i)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
- S(d);CHECK,N_GUARD::S(B),XS(d)
- P(b);N_GUARD::B(A)
- Tries
- Try
- S(B);CHECK
- Refutation
- S(a);XS(B)
- Try
- R(I);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(i);N_GUARD,XQ(H)::S(G)
- B(i);::S(G)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
- Refutation
- R(e);
- Try
- R(I);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(i);N_GUARD,XQ(H)::S(G)
- R(e);N_GUARD::B(A),XS(d)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
- Refutation
- B(i);
- Try
- R(I);CHECK
- Vars
- S(d);XR(I)::S(B)
- Refutation
- P(j);XR(I)
- Try
- R(I);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(i);N_GUARD,XQ(H)::S(G)
- R(e);N_GUARD::B(A),XS(d)
- B(i);::S(G)
- S(d);N_GUARD::S(B)
- Refutation
- B(k);
- Try
- R(I);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- R(e);N_GUARD::B(A),XS(d)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
- Refutation
- B(i);XQ(H)
- Try
- Q(H);XB(i)
- Threat
- DUALS(4)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(k);P_PINP(E),XS(G)::QAB1(H)
- Refutation
- R(h);XS(G)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(k);P_PINP(E),XS(G)::QAB(H)
- S(d);N_GUARD::S(B)
- Refutation
- B(i);XQ(H)
- Try
- Q(H);XB(k)
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(i);::QAB(H)
- S(d);N_GUARD::S(B)
- Refutation
- R(h);XQ(H)
- Try
- Q(H);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
- Refutation
- B(k);P_PINP(E),XS(G)
- Try
- Actual
- R(I);
- Threat
- QAB(H)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- B(i);N_GUARD,XQ(H)::S(G)
- R(e);N_GUARD::B(A),XS(d)
- B(i);::S(G)
- B(k);N_GUARD::QAB(H),XB(k)
- S(d);N_GUARD::S(B)
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).