MESON Chess Problem Database
Problem Display
PID: 45661 (3R1R1b/4p1BB/5n1P/1p6/1N4p1/2p1k1P1/2Q5/K2n1bN1 w - - 0 1)
Strerath, Otto
Recomm., BCF 057. Ty., 1947-1948
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Rd3#
- 2.Qe2#
- 1...Bd3
- 2.Rxd3#
- 1...Bh3
- 2.Rd3#
- 2.Qe2#
- 1...Sf2
- 2.Qc1#
- 1...Se4
- 2.Sd5#
- 2.Qxe4#
- 1...Sd5
- 2.Sxd5#
- 2.Qc1#
- 1...Sh5
- 2.Sd5#
- 2.Qe4#
- 2.Qc1#
- 1...Sd7
- 2.Sd5#
- 2.Qc1#
- 1...Sxh7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.Qe4#
- 2.Qc1#
- 1...Sg8
- 2.Sd5#
- 2.Qe4#
- 2.Qc1#
- 1...Be2
- Tries
- 1.Sd5+?
- 1...Sxd5
- 2.Qc1#
- 1...Kd4!
- 1...Sxd5
- 1.Bxf6?
- threat
- 2.Sd5#
- 2.Bg5#
- 1...exf6
- 2.Rfe8#
- 1...Be2
- 2.Bg5#
- 2.Qxe2#
- 1...Bg2
- 2.Bg5#
- 2.Rd3#
- 2.Qe2#
- 1...Bc4
- 2.Bg5#
- 1...e5
- 2.Bg5#
- 1...e6
- 2.Bg5#
- 1...Bxf6!
- threat
- 1.Rxf6?
- threat
- 2.Re6#
- 2.Qe4#
- 2.Qc1#
- 1...Bxg7
- 2.Qe4#
- 2.Qc1#
- 1...Bc4
- 2.Qe4#
- 2.Qc1#
- 1...Be2
- 2.Qe4#
- 2.Qc1#
- 2.Qxe2#
- 1...Bg2
- 2.Rd3#
- 2.Qd3#
- 2.Qc1#
- 2.Qe2#
- 1...Bd3
- 2.Rxd3#
- 2.Qxd3#
- 2.Qc1#
- 1...Sf2
- 2.Qc1#
- 2.Qxf2#
- 1...e5
- 2.Qe4#
- 2.Qc1#
- 1...e6
- 2.Rxe6#
- 2.Qe4#
- 2.Qc1#
- 1...exf6!
- threat
- 1.Qe4+?
- 1...Sxe4
- 2.Sc2#
- 1...Kf2!
- 1...Sxe4
- 1.Qf5?
- threat
- 2.Sc2#
- 2.Qf4#
- 2.Qc5#
- 1...Sxh7
- 2.Sc2#
- 2.Qe6#
- 2.Qf4#
- 2.Qe5#
- 1...Bd3
- 2.Rxd3#
- 2.Qf4#
- 1...Sd7
- 2.Qf4#
- 2.Qg5#
- 1...Se4
- 2.Sc2#
- 2.Qxe4#
- 2.Qf4#
- 1...Sh5
- 2.Sc2#
- 2.Qe4#
- 2.Qe6#
- 2.Qc5#
- 2.Qe5#
- 1...c2
- 2.Sxc2#
- 2.Qf4#
- 2.Qc5#
- 1...e5
- 2.Sc2#
- 1...Sd5!
- threat
- 1.Qf2+?
- 1...Sxf2
- 2.Sc2#
- 1...Kxf2!
- 1...Sxf2
- 1.Qg2?
- threat
- 2.Sc2#
- 1...Bd3
- 2.Rxd3#
- 1...c2
- 2.Sxc2#
- 2.Qd2#
- 1...Bxg2!
- threat
- 1.Sd5+?
- Keys
- 1.Qa2!
- threat
- 2.Qa7#
- 1...Sxh7
- 2.Qe6#
- 1...Bd3
- 2.Rxd3#
- 1...Se4
- 2.Sc2#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- threat
- 1.Qa2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- B(b);N_GUARD::QAR1(C),XB(b)
- B(b);N_GUARD::R1(I),XB(b)
- S(a);SBLOCK::QAB(C)
- S(g);N_GUARD,XB(H)::S(E)
- Tries
- Try
- S(E);CHECK
- Vars
- S(g);XS(E)::QAB(C)
- Refutation
- K(d);P_SPINS(g),S_FLIGHT
- Try
- B(G);XS(g)
- Threat
- DUALS(2)
- Vars
- P(h);OGATEB,XB(G)::R(J)
- B(b);::B(G)
- P(h);::B(G)
- Refutation
- B(i);XB(G)
- Try
- R(J);XS(g)
- Threat
- DUALS(3)
- Refutation
- P(h);XR(J)
- Try
- Q(C);CHECK
- Vars
- S(g);XQ(C)::S(E)
- Refutation
- K(d);P_SPINS(g),S_FLIGHT
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- P(h);::S(E)
- Refutation
- S(g);
- Try
- Q(C);CHECK
- Vars
- S(a);SBLOCK,XQ(C)::S(E)
- Refutation
- K(d);P_SPINS(g),S_FLIGHT,XQ(C)
- Try
- Q(C);
- Threat
- S(E)
- Vars
- B(b);N_GUARD::R1(I),XB(b)
- Refutation
- B(b);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- QAB(C)
- Vars
- S(g);N_GUARD,XB(H)::QAR(C)
- B(b);N_GUARD::R1(I),XB(b)
- S(g);::S(E)
- S(g);N_GUARD::S(E),XS(g)
- S(g);N_GUARD::S(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).