MESON Chess Problem Database
Problem Display
PID: 108272 (8/8/5pK1/p4R2/Nb2B3/4P3/1N1rk1p1/2Q1n1Bb w - - 0 1)
Ehmgren, Bengt
Revista Romana de Sah, 1948
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rxb2
- 2.Rf2#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rd1
- Tries
- 1.Kh5?
- 1...Rxb2
- 2.Rf2#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rd5!
- 1...Rxb2
- 1.Kh6?
- 1...Rxb2
- 2.Rf2#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Bf8+!
- 1...Rxb2
- 1.Kf7?
- 1...Rxb2
- 2.Rf2#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rd7+!
- 1...Rxb2
- 1.Kh7?
- 1...Rxb2
- 2.Rf2#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rd7+!
- 1...Rxb2
- 1.Sc4?
- threat
- 2.Rf2#
- 1...Sd3
- 2.Bf3#
- 1...Sf3!
- threat
- 1.Bxg2?
- threat
- 2.Bf1#
- 1...Sxg2
- 2.Qf1#
- 1...Bxg2!
- threat
- 1.Bd3+?
- 1...Rxd3
- 2.Rf2#
- 1...Sxd3!
- 1...Rxd3
- 1.Bd5?
- 1...Rxd5
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rxb2!
- 1...Rxd5
- 1.Bc6?
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rxb2!
- 1...Ba3
- 1.Bb7?
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rxb2!
- 1...Ba3
- 1.Ba8?
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rxb2!
- 1...Ba3
- 1.Rf4?
- 1...Rxb2
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd6
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...f5!
- 1...Rxb2
- 1.Rxf6?
- 1...Rxb2
- 2.Rf2#
- 1...Ba3
- 2.Sc3#
- 1...Rd1
- 2.Rf2#
- 2.Qxd1#
- 1...Rc2
- 2.Rf2#
- 2.Qd1#
- 1...Rd3
- 2.Rf2#
- 1...Rd4
- 2.Rf2#
- 1...Rd5
- 2.Rf2#
- 1...Rd7
- 2.Rf2#
- 1...Rd8
- 2.Rf2#
- 1...Bc3
- 2.Sxc3#
- 1...Bc5
- 2.Sc3#
- 1...Bd6
- 2.Sc3#
- 1...Be7
- 2.Sc3#
- 1...Bf8
- 2.Sc3#
- 1...Sc2
- 2.Bf3#
- 1...Sd3
- 2.Bf3#
- 1...Sf3
- 2.Bxf3#
- 1...Rd6!
- 1...Rxb2
- 1.Kh5?
- Keys
- 1.Sd3!
- threat
- 2.Qxe1#
- 1...Rxd3
- 2.Rf2#
- 1...Sxd3
- 2.Bf3#
- 1...Rd1
- 2.Rf2#
- 1...Ra2
- 2.Rf2#
- 1...Rb2
- 2.Rf2#
- 1...Rc2
- 2.Rf2#
- 1...Sc2
- 2.Sf4#
- 1...Sf3
- 2.Sf4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(c);XS(C)::R1(G)
- R(c);::R1(G)
- B(f);N_GUARD::S(E)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- R(c);XS(C)::R1(G)
- R(c);::R1(G)
- B(f);N_GUARD::S(E)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);P_PINR(G)
- Try
- K(H);P-FLIGHT
- Vars
- R(c);XS(C)::R1(G)
- R(c);::R1(G)
- B(f);N_GUARD::S(E)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- B(f);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- R(c);XS(C)::R1(G)
- R(c);::R1(G)
- B(f);N_GUARD::S(E)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- R(c);XS(C)::R1(G)
- R(c);::R1(G)
- B(f);N_GUARD::S(E)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);CHECK
- Try
- S(C);
- Threat
- R1(G)
- Vars
- S(a);N_GUARD,SBLOCK::B(F)
- Refutation
- S(a);
- Try
- B(F);XP(e)
- Threat
- B(F)
- Vars
- S(a);OGATE,XB(F)::QAB1(A)
- Refutation
- B(b);XB(F)
- Try
- B(F);CHECK
- Vars
- R(c);XB(F)::R1(G)
- Refutation
- S(a);XB(F)
- Try
- B(F);
- Vars
- R(c);XB(F)::R1(G)
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);XS(C)
- Try
- B(F);
- Vars
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);XS(C)
- Try
- B(F);
- Vars
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);XS(C)
- Try
- B(F);
- Vars
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);XS(C)
- Try
- R(G);
- Vars
- R(c);XS(C)::R1(G)
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- P(h);
- Try
- R(G);XP(h)
- Vars
- R(c);XS(C)::R1(G)
- B(f);N_GUARD::S(E)
- R(c);::R1(G)
- B(f);N_GUARD::S(E),XB(f)
- S(a);N_GUARD::B(F)
- S(a);N_GUARD::B(F),XS(a)
- Refutation
- R(c);P_PINR(G)
- Try
- Actual
- S(C);
- Threat
- QAR1(A),XS(a)
- Vars
- R(c);XS(C)::R1(G)
- S(a);N_GUARD,SBLOCK,XS(C)::B(F)
- R(c);::R1(G)
- S(a);::S(C)
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).