MESON Chess Problem Database
Problem Display
PID: 60595 (K4RBk/1Q2n3/8/1b6/p5R1/4p3/8/r7 w - - 0 1)
Wielgos, Oskar
4th Prize, Deutsche Schachblatter, 1979-1980
#2
5 + 6
| 5637 | Prague Series Solving Ty. | 2002-2003 |
| 5405 | Chess Solving Yearbook 2003 | 2004 |
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qxh1#
- 1...Ra3
- 2.Qh1#
- 1...Bf1
- 2.Qb2#
- 1...Be2
- 2.Qb2#
- 1...Bd3
- 2.Qb2#
- 1...Bc4
- 2.Qb2#
- 1...Ba6
- 2.Qb2#
- 1...Bd7
- 2.Qb2#
- 1...Be8
- 2.Qb2#
- 1...Sd5
- 2.Bxd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qg7#
- 2.Qh7#
- 1...Sf5
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qh7#
- 1...Sc6
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qg7#
- 2.Qh7#
- 1...Sg6
- 2.Qh7#
- 1...Sc8
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qg7#
- 2.Qh7#
- 1...Sxg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Rh1
- Tries
- 1.Ba2+?
- 1...Sg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kh7!
- 1...Sg8
- 1.Bb3+?
- 1...Sg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kh7!
- 1...Sg8
- 1.Bc4+?
- 1...Sg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kh7!
- 1...Sg8
- 1.Bd5+?
- 1...Sg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kh7!
- 1...Sg8
- 1.Be6+?
- 1...Sg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kh7!
- 1...Sg8
- 1.Bh7+?
- 1...Sg8
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qg7#
- 1...Kxh7!
- 1...Sg8
- 1.Rf2?
- threat
- 2.Rh2#
- 1...Sxg8
- 2.Qg7#
- 1...Sg6
- 2.Qh7#
- 1...Rh1
- 2.Qxh1#
- 1...Ra2
- 2.Qh1#
- 1...Bf1
- 2.Qb2#
- 1...Bd3
- 2.Qb2#
- 1...Be8
- 2.Qb2#
- 1...Sf5
- 2.Qh7#
- 1...exf2!
- threat
- 1.Rf3?
- threat
- 2.Rh3#
- 1...Sxg8
- 2.Qg7#
- 1...Sg6
- 2.Qh7#
- 1...Bf1
- 2.Qb2#
- 1...Bd3
- 2.Qb2#
- 1...Be8
- 2.Qb2#
- 1...Sf5
- 2.Qh7#
- 1...Rh1!
- threat
- 1.Rf6?
- threat
- 2.Rh6#
- 1...Sxg8
- 2.Qg7#
- 1...Sg6
- 2.Qh7#
- 1...Rh1
- 2.Qxh1#
- 1...Sf5
- 2.Qh7#
- 1...Bd3!
- threat
- 1.Rf7?
- threat
- 2.Rh7#
- 1...Rh1
- 2.Qxh1#
- 1...Bd3
- 2.Qb2#
- 1...Sg6!
- threat
- 1.Qc7?
- threat
- 2.Qh2#
- 2.Qe5#
- 2.Qc3#
- 1...Sxg8
- 2.Rh4#
- 2.Rgxg8#
- 2.Rfxg8#
- 2.Qh2#
- 2.Qg7#
- 1...Rc1
- 2.Qh2#
- 2.Qe5#
- 1...Rd1
- 2.Qh2#
- 2.Qe5#
- 1...Rf1
- 2.Qh2#
- 1...Rh1
- 2.Qe5#
- 2.Qc3#
- 1...Ra2
- 2.Qe5#
- 2.Qc3#
- 1...Ra3
- 2.Qh2#
- 2.Qe5#
- 1...Bf1
- 2.Qe5#
- 2.Qc3#
- 1...Bd3
- 2.Qe5#
- 2.Qc3#
- 1...Bc4
- 2.Qh2#
- 2.Qe5#
- 1...Be8
- 2.Qe5#
- 2.Qc3#
- 1...Sd5
- 2.Bxd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qh2#
- 2.Qg7#
- 2.Qh7#
- 1...Sf5
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qh7#
- 1...Sc6
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qh2#
- 2.Qg7#
- 2.Qh7#
- 1...Sg6
- 2.Qh7#
- 1...Bc6+!
- threat
- 1.Qxe7?
- threat
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qh4#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 2.Qh7#
- 1...Rf1
- 2.Rh4#
- 2.Qh4#
- 2.Qg7#
- 2.Qh7#
- 1...Rh1
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 1...Ra2
- 2.Bxa2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Rh4#
- 2.Qh4#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 2.Qh7#
- 1...Be2
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qh4#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 2.Qh7#
- 1...Bd3
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 1...Bc4
- 2.Bxc4#
- 2.Bd5#
- 2.Be6#
- 2.Rh4#
- 2.Qh4#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 2.Qh7#
- 1...Be8
- 2.Ba2#
- 2.Bb3#
- 2.Bc4#
- 2.Bd5#
- 2.Be6#
- 2.Bh7#
- 2.Qf6#
- 2.Qe5#
- 2.Qg7#
- 2.Qh7#
- 1...Bc6+!
- threat
- 1.Ba2+?
- Keys
- 1.Rf5!
- threat
- 2.Rh5#
- 1...Sxf5
- 2.Qh7#
- 1...Sxg8
- 2.Qg7#
- 1...Sg6
- 2.Qh7#
- 1...Rh1
- 2.Qxh1#
- 1...Bd3
- 2.Qb2#
- 1...Be8
- 2.Qb2#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAB(B),XR(a)
- R(a);N_GUARD::QAB(B)
- B(d);OGATE::QAB(B)
- S(e);OGATE::QAR1(B)
- Tries
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e)
- Try
- B(E);CHECK
- Refutation
- K(f);P-FLIGHT,P_SPINS(e),XB(E)
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(e);OGATE,XB(E)::QAB1(B)
- S(e);OGATE::QAR1(B)
- R(a);N_GUARD::QAB(B),XR(a)
- R(a);N_GUARD::QAB(B)
- B(d);OGATE::QAB(B)
- Refutation
- P(b);XR(D)
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(e);OGATE,XB(E)::QAB1(B)
- S(e);OGATE::QAR1(B)
- B(d);OGATE::QAB(B)
- Refutation
- R(a);
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(e);OGATE,XB(E)::QAB1(B)
- S(e);OGATE::QAR1(B)
- R(a);N_GUARD::QAB(B),XR(a)
- Refutation
- B(d);
- Try
- R(D);
- Threat
- R1(D)
- Vars
- R(a);N_GUARD::QAB(B),XR(a)
- B(d);OGATE::QAB(B)
- Refutation
- S(e);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(a);::QAR(B)
- S(e);OGATE::QAR1(B)
- Refutation
- B(d);CHECK
- Try
- Q(B);XS(e)
- Threat
- DUALS(12)
- Refutation
- B(d);CHECK
- Try
- Actual
- R(D);
- Threat
- R(D)
- Vars
- S(e);OGATE,XR(D)::QAR1(B)
- S(e);OGATE,XB(E)::QAB1(B)
- S(e);OGATE::QAR1(B)
- R(a);N_GUARD::QAB(B),XR(a)
- B(d);OGATE::QAB(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).