MESON Chess Problem Database
Problem Display
PID: 148839 (B4n2/4Br2/p2p4/Qq2kNN1/2pp4/5RP1/4p3/6K1 w - - 0 1)
Weiss, Berthold
Good Companions (March), 1918
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Qxd5#
- 1...Se6
- 2.Sxf7#
- 1...e1Q+
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R+
- 2.Qxe1#
- 1...d3
- 2.Qc3#
- 1...d5
- 2.Qc7#
- 1...Qd5
- Tries
- 1.Sxd6?
- threat
- 2.Sxc4#
- 2.Sdxf7#
- 1...e1Q+
- 2.Qxe1#
- 1...e1R+
- 2.Qxe1#
- 1...Rxe7
- 2.Sxc4#
- 1...d3
- 2.Qc3#
- 1...Rf4
- 2.gxf4#
- 1...Rf5
- 2.Sxc4#
- 2.Rxf5#
- 1...Rf6
- 2.Sxc4#
- 1...Rg7
- 2.Sxc4#
- 2.Rf5#
- 1...Rh7
- 2.Sxc4#
- 2.Rf5#
- 1...c3
- 2.Sc4#
- 2.Sdxf7#
- 1...Rxf3!
- threat
- 1.Sh6?
- threat
- 2.Sg4#
- 2.Shxf7#
- 1...e1Q+
- 2.Qxe1#
- 1...e1R+
- 2.Qxe1#
- 1...Rxe7
- 2.Sg4#
- 2.Rf5#
- 1...d3
- 2.Qc3#
- 1...Rf4
- 2.gxf4#
- 1...Rf5
- 2.Sg4#
- 2.Rxf5#
- 1...Rf6
- 2.Sg4#
- 2.Bxf6#
- 1...Rg7
- 2.Sg4#
- 2.Bf6#
- 2.Rf5#
- 1...Rh7
- 2.Sg4#
- 2.Bf6#
- 2.Rf5#
- 1...Rxf3!
- threat
- 1.Qd2?
- threat
- 2.Qf4#
- 2.Qxe2#
- 2.Qxd4#
- 1...e1Q+
- 2.Qxe1#
- 1...e1R+
- 2.Qxe1#
- 1...Rxf5
- 2.Qxe2#
- 1...Rxe7
- 2.Qxd4#
- 1...Qc6
- 2.Qxd4#
- 1...Qb7
- 2.Qxd4#
- 1...e1S
- 2.Qxe1#
- 2.Qf4#
- 2.Qe2#
- 2.Qxd4#
- 1...e1B
- 2.Qxe1#
- 2.Qf4#
- 2.Qe2#
- 2.Qxd4#
- 1...Qb2
- 2.Qf4#
- 1...Qb3
- 2.Qf4#
- 2.Qxd4#
- 1...Qc5
- 2.Qf4#
- 2.Qxe2#
- 1...Qd5
- 2.Qf4#
- 1...Qb6
- 2.Qf4#
- 2.Qxe2#
- 1...Se6
- 2.Sxf7#
- 2.Qxe2#
- 1...Sg6
- 2.Qxe2#
- 2.Qxd4#
- 1...c3
- 2.Qf4#
- 2.Qxd4#
- 1...d3
- 2.Qc3#
- 2.Qe3#
- 2.Qf4#
- 1...Qb1+!
- threat
- 1.Qxb5+?
- 1...d5
- 2.Qxd5#
- 2.Qb8#
- 1...axb5!
- 1...d5
- 1.Sxd6?
- Keys
- 1.Sg7!
- threat
- 2.Sxf7#
- 1...e1Q+
- 2.Qxe1#
- 1...e1R+
- 2.Qxe1#
- 1...Rxf3
- 2.Sxf3#
- 1...Rxe7
- 2.Rf5#
- 1...Rxg7
- 2.Bf6#
- 1...d3
- 2.Qc3#
- 1...Qd5
- 2.Qxd5#
- 1...Rf4
- 2.gxf4#
- 1...Rf5
- 2.Rxf5#
- 1...Rf6
- 2.Bxf6#
- 1...d5
- 2.Qc7#
- threat
- 1.Sg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(d);OGATE::QAR1(D),XQ(d)
- S(i);SBLOCK::S(F),XR(h)
- P(a);CHECK,OGATEB::QAR(D),XQ(a)
- P(a);OGATEB::QAR(D),XS(a)
- P(a);OGATEB::QAR(D),XB(a)
- P(a);CHECK,OGATEB::QAR(D),XR(a)
- P(c);OGATEB::QAB(D)
- P(g);N_SPINQ(d),OGATEB::QAB(D)
- Tries
- Try
- S(E);XP(g)
- Threat
- DUALS(2)
- Vars
- P(a);CHECK,OGATEB::QAR(D),XQ(a)
- P(a);CHECK,OGATEB::QAR(D),XR(a)
- R(h);XB(G)::S(E),XP(b)
- P(c);OGATEB::QAB(D)
- R(h);OGATE::P(C),XR(h)
- R(h);::S(E),XP(b)
- Refutation
- R(h);XR(B)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(a);CHECK,OGATEB::QAR(D),XQ(a)
- P(a);CHECK,OGATEB::QAR(D),XR(a)
- P(c);OGATEB::QAB(D)
- R(h);OGATE::P(C),XR(h)
- Refutation
- R(h);XR(B)
- Try
- Q(D);N_PINQ(d)
- Threat
- DUALS(3)
- Vars
- P(a);CHECK,OGATEB::QAR(D),XQ(a)
- P(a);CHECK,OGATEB::QAR(D),XR(a)
- R(h);XS(E)::QAR(D),XP(a)
- R(h);XB(G)::QAB1(D),XP(c)
- Q(d);::QAB1(D),XP(c)
- Q(d);::QAB1(D)
- Refutation
- Q(d);CHECK
- Try
- Q(D);CHECK,XQ(d)
- Refutation
- P(f);XQ(D)
- Try
- Actual
- S(E);
- Threat
- S(F),XR(h)
- Vars
- P(a);CHECK,OGATEB::QAR(D),XQ(a)
- P(a);CHECK,OGATEB::QAR(D),XR(a)
- R(h);XR(B)::S(F),XR(h)
- R(h);N_GUARD,XB(G)::R1(B)
- R(h);N_GUARD,XS(E)::B(G)
- P(c);OGATEB::QAB(D)
- Q(d);OGATE::QAR1(D),XQ(d)
- R(h);OGATE::P(C),XR(h)
- R(h);N_GUARD::R1(B),XR(h)
- R(h);N_GUARD::B(G),XR(h)
- P(g);N_SPINQ(d),OGATEB::QAB(D)
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).