MESON Chess Problem Database
Problem Display
PID: 257239 (7r/KPBP3R/N1k2p2/5N2/2P4Q/4n3/1b2R1b1/1r6 w - - 0 1)
Bouwhuis, GM
Probleemblad, 1947
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxh7
- 2.b8S#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8B#
- 1...Bc1
- 2.Sd4#
- 2.Qxf6#
- 1...Ba3
- 2.Sd4#
- 1...Bd4+
- 2.Sxd4#
- 1...Sd1
- 2.Re6#
- 1...Sf1
- 2.Re6#
- 1...Sc2
- 2.Re6#
- 1...Sxc4
- 2.Qxc4#
- 1...Sg4
- 2.Re6#
- 1...Sd5
- 2.Re6#
- 1...Rxh7
- Tries
- 1.Sb4+?
- 1...Kc5
- 2.Bd6#
- 1...Kxc7!
- 1...Kc5
- 1.Rxb2?
- threat
- 2.Sd4#
- 2.Qxf6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rxh7
- 2.b8S#
- 1...Sxc4
- 2.Qxc4#
- 1...Rd1
- 2.Rb6#
- 1...Re8
- 2.Sd4#
- 2.dxe8Q#
- 2.dxe8B#
- 1...Rf8
- 2.Sd4#
- 1...Bd5
- 2.Sd4#
- 1...Sc2
- 2.Qxf6#
- 1...Sg4
- 2.Sd4#
- 1...Sd5
- 2.Sd4#
- 1...Sxf5!
- threat
- 1.Qd4?
- threat
- 2.Se7#
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bxd4+
- 2.Sxd4#
- 1...Rxh7
- 2.Qd6#
- 2.b8S#
- 2.d8S#
- 1...Sxc4
- 2.Qc5#
- 2.Qxc4#
- 1...Sxf5
- 2.Qc5#
- 2.Qb6#
- 1...Rd1
- 2.Se7#
- 2.Qc5#
- 2.Qb6#
- 1...Re8
- 2.Qc5#
- 2.Qb6#
- 2.Qd6#
- 2.dxe8Q#
- 2.dxe8B#
- 1...Ba1
- 2.Se7#
- 2.Qc5#
- 2.Qd6#
- 1...Bc1
- 2.Se7#
- 2.Qc5#
- 2.Qxf6#
- 2.Qd6#
- 1...Bc3
- 2.Se7#
- 2.Qc5#
- 2.Qd6#
- 1...Bd5
- 2.Qc5#
- 2.Qb6#
- 1...Sd5
- 2.Re6#
- 2.Qc5#
- 1...Ba3!
- threat
- 1.Qe4+?
- 1...Sd5
- 2.Qe6#
- 1...Bxe4!
- 1...Sd5
- 1.d8Q?
- threat
- 2.Se7#
- 2.Qd6#
- 2.Qd7#
- 2.b8S#
- 1...Bd4+
- 2.Sxd4#
- 1...Rxh7
- 2.Qd6#
- 2.b8S#
- 1...Sxc4
- 2.Qxc4#
- 2.Qd7#
- 1...Sxf5
- 2.Qd7#
- 2.b8S#
- 1...Rd1
- 2.Se7#
- 2.b8S#
- 1...Re8
- 2.Qd6#
- 2.Qd7#
- 2.Qxe8#
- 2.b8S#
- 1...Ba1
- 2.Se7#
- 2.Qd6#
- 2.Qd7#
- 1...Bc1
- 2.Sd4#
- 2.Se7#
- 2.Qhxf6#
- 2.Qdxf6#
- 2.Qd6#
- 2.Qd7#
- 1...Ba3
- 2.Sd4#
- 2.Qd7#
- 1...Bc3
- 2.Se7#
- 2.Qd6#
- 2.Qd7#
- 1...Be5
- 2.Se7#
- 2.Qd7#
- 1...Sd5
- 2.Re6#
- 2.Qd6#
- 2.Qd7#
- 2.b8S#
- 1...Rxd8!
- threat
- 1.d8R?
- threat
- 2.Se7#
- 2.Rd6#
- 2.b8S#
- 1...Bd4+
- 2.Sxd4#
- 1...Rxh7
- 2.Rd6#
- 2.b8S#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxf5
- 2.b8S#
- 1...Rd1
- 2.Se7#
- 2.b8S#
- 1...Re8
- 2.Rd6#
- 2.b8S#
- 1...Ba1
- 2.Se7#
- 2.Rd6#
- 1...Bc1
- 2.Sd4#
- 2.Se7#
- 2.Rd6#
- 2.Qxf6#
- 1...Ba3
- 2.Sd4#
- 1...Bc3
- 2.Se7#
- 2.Rd6#
- 1...Be5
- 2.Se7#
- 1...Sd5
- 2.Re6#
- 2.Rd6#
- 2.b8S#
- 1...Rxd8!
- threat
- 1.Sb4+?
- Keys
- 1.Qg4!
- threat
- 2.Se7#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bd4+
- 2.Sxd4#
- 1...Rxh7
- 2.b8S#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxg4
- 2.Re6#
- 1...Sxf5
- 2.Qxg2#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8B#
- 1...Ba3
- 2.Sd4#
- 1...Sd5
- 2.Re6#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(g);N_GUARD,XR(J)::P=S
- R(g);CHECK,OGATE::PXR(g)=Q
- R(g);OGATE::PXR(g)=Q
- B(b);N_GUARD::S(D)
- B(b);CHECK,N_GUARD::S(D),XB(b)
- S(d);OGATE::R(A)
- S(d);OGATE,XP(B)::QAR2(C),XS(d)
- Tries
- Try
- S(E);CHECK
- Vars
- K(e);P-FLIGHT::B(H)
- Refutation
- K(e);P-FLIGHT,XB(H)
- Try
- R(A);XB(b)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- R(g);N_GUARD,XR(J)::P=S
- S(d);OGATE,XP(B)::QAR2(C),XS(d)
- R(a);N_GUARD::R1(A)
- R(g);::S(D)
- B(c);::S(D)
- S(d);::QAR(C),XP(f)
- S(d);::S(D)
- Refutation
- S(d);XS(D)
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- B(b);CHECK,XQ(C)::S(D),XB(b)
- Refutation
- B(b);
- Try
- Q(C);CHECK
- Vars
- S(d);P_SPINS(d)::QAR2(C)
- Refutation
- B(c);XQ(C)
- Try
- P(I);
- Threat
- DUALS(4)
- Vars
- B(b);CHECK,N_GUARD::S(D),XB(b)
- Refutation
- R(g);XQ(I)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::S(D),XB(b)
- S(d);OGATE,XP(B)::QAR2(C),XS(d)
- S(d);XS(D)::P=S
- B(b);N_GUARD::S(D)
- B(b);::S(D)
- Refutation
- R(g);XR(I)
- Try
- Actual
- Q(C);
- Threat
- S(D)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- B(b);CHECK,N_GUARD::S(D),XB(b)
- R(g);N_GUARD,XR(J)::P=S
- S(d);OGATE,XP(B)::QAR2(C),XS(d)
- S(d);OGATE,XQ(C)::R(A)
- S(d);N_GUARD,XS(D)::QAB(C),XB(c)
- R(g);OGATE::PXR(g)=Q
- B(b);N_GUARD::S(D)
- S(d);OGATE::R(A)
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).