MESON Chess Problem Database
Problem Display
PID: 33313 (7Q/2r4p/1N1pp1pq/7N/3R4/2p1kPB1/4P3/bb2K2n w - - 0 1)
Ahues, Herbert Siegfried Oskar
Volkmann, Albert
1st Prize, Arbejder-Skak, 1949
#2
8 + 11
| 3105 | FIDE Album (1945-1955) | 1964 |
| 3188 | Dutch Solving Championship | 2003 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Bxf4#
- 1...Qxh5
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...Ra7
- 2.Sc4#
- 1...Rb7
- 2.Sc4#
- 1...Rd7
- 2.Sc4#
- 1...Re7
- 2.Sc4#
- 1...Rf7
- 2.Sc4#
- 1...Ba2
- 2.Rd3#
- 2.Re4#
- 1...Bd3
- 2.Rxd3#
- 1...Be4
- 2.Rxe4#
- 1...Sf2
- 2.Bxf2#
- 1...c2
- 2.Rd3#
- 2.Re4#
- 1...Qf4
- Tries
- 1.Rd2?
- threat
- 2.Qd4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...Rg7
- 2.Sc4#
- 1...Bd3
- 2.Rxd3#
- 1...c2
- 2.Rd3#
- 1...e5
- 2.Sd5#
- 1...cxd2+!
- threat
- 1.Ra4?
- threat
- 2.Qd4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Rg7!
- threat
- 1.Rb4?
- threat
- 2.Qd4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Rg7!
- threat
- 1.Rc4?
- threat
- 2.Qd4#
- 1...Rxc4
- 2.Sxc4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Rg7!
- threat
- 1.Rf4?
- threat
- 2.Qd4#
- 1...Qxf4
- 2.Bxf4#
- 1...Rg7
- 2.Sc4#
- 1...Rc4
- 2.Sxc4#
- 1...Be4
- 2.Rxe4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Qg7!
- threat
- 1.Rg4?
- threat
- 2.Qd4#
- 1...Rg7
- 2.Sc4#
- 1...Qf4
- 2.Bxf4#
- 1...Rc4
- 2.Sxc4#
- 1...Be4
- 2.Rxe4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Qg7!
- threat
- 1.Rh4?
- threat
- 2.Qd4#
- 1...Rg7
- 2.Sc4#
- 1...Qf4
- 2.Bxf4#
- 1...Rc4
- 2.Sxc4#
- 1...Be4
- 2.Rxe4#
- 1...c2
- 2.Re4#
- 1...e5
- 2.Sd5#
- 1...Qg7!
- threat
- 1.Rd5?
- threat
- 2.Qd4#
- 1...exd5
- 2.Sxd5#
- 1...Rg7
- 2.Sc4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...c2
- 2.Rd3#
- 1...e5!
- threat
- 1.Rxd6?
- threat
- 2.Qd4#
- 1...Rg7
- 2.Sc4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...c2
- 2.Rd3#
- 1...e5!
- threat
- 1.Qe5+?
- 1...Be4
- 2.Rd3#
- 2.Rxe4#
- 2.Qxe4#
- 1...dxe5!
- 1...Be4
- 1.Rd2?
- Keys
- 1.Rd1!
- threat
- 2.Qd4#
- 1...Qf4
- 2.Bxf4#
- 1...Qg7
- 2.Bf4#
- 1...Rc4
- 2.Sxc4#
- 1...Rg7
- 2.Sc4#
- 1...Bd3
- 2.Rxd3#
- 1...c2
- 2.Rd3#
- 1...e5
- 2.Sd5#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD,XS(F)::B(D)
- R(j);N_GUARD::S(G),XR(j)
- R(j);N_GUARD::S(G)
- B(b);N_GUARD::R1(E),XB(b)
- S(c);N_GUARD::B(D),XS(c)
- Tries
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- R(j);N_GUARD::S(G)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- P(d);CHECK,XR(E)
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- R(j);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- R(j);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- R(j);XR(E)::S(G),XR(j)
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- R(j);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- Q(i);OGATE,XR(E)::B(D),XQ(i)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD::S(G),XR(j)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- Q(i);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- R(j);N_GUARD::S(G)
- Q(i);N_GUARD::B(D),XQ(i)
- R(j);N_GUARD::S(G),XR(j)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- Q(i);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- R(j);N_GUARD::S(G)
- Q(i);N_GUARD::B(D),XQ(i)
- R(j);N_GUARD::S(G),XR(j)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
- Refutation
- Q(i);
- Try
- R(E);
- Threat
- QAB1(H)
- Vars
- P(g);XR(E)::S(G),XP(g)
- R(j);N_GUARD::S(G)
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- P(d);S_CUTB(b)::R1(E)
- Refutation
- P(g);
- Try
- R(E);XP(f)
- Threat
- QAB1(H)
- Vars
- R(j);N_GUARD::S(G)
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- P(d);S_CUTB(b)::R1(E)
- Refutation
- P(g);
- Try
- Q(H);CHECK
- Refutation
- P(f);XQ(H)
- Try
- Actual
- R(E);
- Threat
- QAB1(H)
- Vars
- Q(i);N_GUARD::B(D),XQ(i)
- Q(i);N_GUARD::B(D)
- R(j);N_GUARD::S(G),XR(j)
- R(j);N_GUARD::S(G)
- B(b);N_GUARD::R1(E),XB(b)
- P(d);S_CUTB(b)::R1(E)
- P(g);N_GUARD::S(G)
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).