MESON Chess Problem Database
Problem Display
PID: 160226 (3R4/b4N1p/5K1B/2p1p3/2B1k3/1P6/QPn5/4nR2 w - - 0 1)
Willemsens, Luis Cornelis
Die Schwalbe, 1954
#2
9 + 7
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bb6
- 2.Qa8#
- 1...Bb8
- 2.Qa8#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bd3#
- 1...Se3
- 2.Sg5#
- 1...Sd4
- 2.Sd6#
- 1...Bb6
- Tries
- 1.Bd5+?
- 1...Kd4
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Bc6#
- 2.Bb7#
- 2.Ba8#
- 1...Kd3!
- 1...Kd4
- 1.Be6?
- threat
- 2.Bf5#
- 1...Se3
- 2.Sg5#
- 1...Sd4!
- threat
- 1.Bc1?
- threat
- 2.Sg5#
- 1...Sf3
- 2.Bd3#
- 1...h6!
- threat
- 1.Bd2?
- threat
- 2.Sg5#
- 1...Sf3
- 2.Bd3#
- 1...h6!
- threat
- 1.Rf3?
- threat
- 2.Sg5#
- 1...Sxf3
- 2.Bd3#
- 1...Kxf3!
- threat
- 1.Rd1?
- threat
- 2.Sd6#
- 2.Bd5#
- 1...Bb8
- 2.Bd5#
- 2.Qa8#
- 1...Se3
- 2.Sg5#
- 2.Sd6#
- 1...Sb4
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sd3!
- threat
- 1.Rd2?
- threat
- 2.Sd6#
- 2.Bd5#
- 1...Bb8
- 2.Bd5#
- 2.Qa8#
- 1...Se3
- 2.Sg5#
- 2.Sd6#
- 1...Sb4
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sd3!
- threat
- 1.Rd3?
- threat
- 2.Sg5#
- 2.Sd6#
- 1...Bb8
- 2.Sg5#
- 2.Qa8#
- 1...Sf3
- 2.Sd6#
- 1...Sxd3!
- threat
- 1.Rd4+?
- 1...Sxd4
- 2.Sd6#
- 1...cxd4
- 2.Sd6#
- 1...exd4
- 2.Sd6#
- 1...Kxd4!
- 1...Sxd4
- 1.Qa1?
- 1...Bb6
- 2.Qa8#
- 1...Bb8
- 2.Qa8#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bd3#
- 1...Sa3
- 2.Qxe1#
- 1...Se3
- 2.Sg5#
- 1...Sb4
- 2.Qxe1#
- 1...Sd4
- 2.Sd6#
- 1...Sxa1!
- 1...Bb6
- 1.Qa4?
- threat
- 2.Bd3#
- 2.Qc6#
- 1...Sd3
- 2.Bxd3#
- 2.Bd5#
- 2.Qc6#
- 1...Se3
- 2.Sg5#
- 2.Bd3#
- 1...Sd4
- 2.Sd6#
- 1...Sb4!
- threat
- 1.Qa5?
- 1...Sa1
- 2.Qxe1#
- 1...Bb6
- 2.Qa8#
- 1...Bb8
- 2.Qa8#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bd3#
- 1...Sa3
- 2.Qxe1#
- 1...Se3
- 2.Sg5#
- 1...Sd4
- 2.Sd6#
- 1...Sb4!
- 1...Sa1
- 1.Qa6?
- threat
- 2.Qb7#
- 2.Qc6#
- 1...Bb6
- 2.Qb7#
- 2.Qa8#
- 1...Se3
- 2.Sg5#
- 1...Sd4
- 2.Sd6#
- 2.Bd5#
- 1...Sb4!
- threat
- 1.Qxa7?
- threat
- 2.Qb7#
- 2.Qa8#
- 1...Se3
- 2.Sg5#
- 1...Sd4
- 2.Sd6#
- 1...Sb4!
- threat
- 1.Bd5+?
- Keys
- 1.Sxe5!
- 1...Sa1
- 2.Rxe1#
- 1...Bb6
- 2.Qa8#
- 1...Bb8
- 2.Qa8#
- 1...Sg2
- 2.Bd3#
- 1...Sd3
- 2.Bxd3#
- 1...Sf3
- 2.Bd3#
- 1...Sa3
- 2.Rxe1#
- 1...Se3
- 2.Rf4#
- 1...Sb4
- 2.Rxe1#
- 1...Sd4
- 2.Bd5#
- 1...Sa1
- 1.Sxe5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(f);OGATE::QAB(B)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(b);SBLOCK::S(H)
- Tries
- Try
- B(E);CHECK
- Refutation
- K(c);S_FLIGHT
- Try
- B(E);
- Threat
- B(E)
- Vars
- S(b);SBLOCK::S(H)
- Refutation
- S(b);
- Try
- B(G);
- Threat
- S(H)
- Vars
- S(a);N_GUARD::B(E)
- Refutation
- P(g);
- Try
- B(G);
- Threat
- S(H)
- Vars
- S(a);N_GUARD::B(E)
- Refutation
- P(g);
- Try
- R(A);
- Threat
- S(H)
- Vars
- S(a);N_GUARD,SBLOCK,XR(A)::B(E)
- Refutation
- K(c);S_FLIGHT,XR(A)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(b);::S(H)
- Refutation
- S(a);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(b);::S(H)
- Refutation
- S(a);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(a);::S(H)
- Refutation
- S(a);XR(I)
- Try
- R(I);CHECK
- Vars
- S(b);SBLOCK,XR(I)::S(H)
- P(d);SBLOCK,XR(I)::S(H)
- P(e);SBLOCK,XR(I)::S(H)
- Refutation
- K(c);P-FLIGHT,XR(I)
- Try
- Q(B);
- Vars
- B(f);OGATE::QAB(B)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(b);N_GUARD::QAR(B),XS(a)
- S(b);SBLOCK::S(H)
- Refutation
- S(b);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(b);SBLOCK::S(H)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- S(b);N_GUARD::QAR(B),XS(a)
- B(f);OGATE::QAB(B)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(b);SBLOCK::S(H)
- Refutation
- S(b);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(b);SBLOCK::S(H)
- Refutation
- S(b);
- Try
- Q(B);XB(f)
- Threat
- DUALS(2)
- Vars
- S(b);SBLOCK::S(H)
- Refutation
- S(b);
- Try
- Actual
- S(H);XP(e)
- Vars
- S(b);N_GUARD::R(A),XS(a)
- B(f);OGATE::QAB(B)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
- S(b);SBLOCK::R1(A)
- S(b);SBLOCK::B(E)
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).