MESON Chess Problem Database
Problem Display
PID: 219125 (6B1/2K5/4N1p1/3kp3/2b1N1n1/8/2Q5/3n4 w - - 0 1)
van Heycop ten Ham, AJCE
Deutsche Schachzeitung, 1884
#2
5 + 6
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Qc6#
- 1...Ba2
- 2.Qd3#
- 2.Qc6#
- 1...Be2
- 2.Qc6#
- 1...Bb3
- 2.Qd3#
- 2.Qc6#
- 1...Bd3
- 2.Qxd3#
- 2.Qc6#
- 1...Ba6
- 2.Qc6#
- 1...Sb2
- 2.Sc3#
- 1...Sdf2
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sde3
- 2.Sc3#
- 1...Sgf2
- 2.Sf6#
- 1...Sh2
- 2.Sf6#
- 1...Sge3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Bf1
- Tries
- 1.Sd2?
- threat
- 2.Qe4#
- 2.Qxc4#
- 1...e4
- 2.Qxe4#
- 1...Bb5
- 2.Qe4#
- 2.Qc5#
- 1...Bf1
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Ba2
- 2.Qd3#
- 2.Qe4#
- 2.Qxa2#
- 2.Qc5#
- 2.Qc6#
- 1...Be2
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Bb3
- 2.Qxb3#
- 2.Qd3#
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Bd3
- 2.Qxd3#
- 2.Qc5#
- 2.Qc6#
- 1...Ba6
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Sb2
- 2.Qe4#
- 1...Sdf2
- 2.Qxc4#
- 1...Sde3
- 2.Qe4#
- 1...Sgf2
- 2.Qxc4#
- 1...Sge3
- 2.Qe4#
- 1...Sf6
- 2.Qxc4#
- 1...Sc3!
- threat
- 1.Sd6?
- threat
- 2.Qe4#
- 2.Qxc4#
- 1...e4
- 2.Qxe4#
- 1...Bb5
- 2.Qe4#
- 2.Qc5#
- 1...Bf1
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Ba2
- 2.Qxd1#
- 2.Qd3#
- 2.Qe4#
- 2.Qxa2#
- 2.Qd2#
- 2.Qc5#
- 2.Qc6#
- 1...Be2
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Bb3
- 2.Qxb3#
- 2.Qd3#
- 2.Qe4#
- 2.Qd2#
- 2.Qc5#
- 2.Qc6#
- 1...Bd3
- 2.Qxd3#
- 2.Qc5#
- 2.Qc6#
- 1...Ba6
- 2.Qe4#
- 2.Qc5#
- 2.Qc6#
- 1...Sb2
- 2.Qe4#
- 1...Sdf2
- 2.Qxc4#
- 1...Sde3
- 2.Qe4#
- 1...Sgf2
- 2.Qxc4#
- 1...Sge3
- 2.Qe4#
- 1...Sf6
- 2.Qxc4#
- 1...Sc3!
- threat
- 1.Qxd1+?
- 1...Bd3
- 2.Qxd3#
- 1...Kxe4!
- 1...Bd3
- 1.Qa4?
- threat
- 2.Qc6#
- 2.Qa8#
- 1...Bb5
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Bf1
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Ba2
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Be2
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Bb3
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Bd3
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Ba6
- 2.Sf4#
- 2.S6c5#
- 2.S6g5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 2.Qc6#
- 1...Kxe4!
- threat
- 1.Qb2?
- threat
- 2.S6c5#
- 2.S6g5#
- 2.Qb7#
- 1...Sxb2
- 2.Sc3#
- 1...Bf1
- 2.S6c5#
- 2.S6g5#
- 1...Ba2
- 2.S6c5#
- 2.S6g5#
- 1...Be2
- 2.S6c5#
- 2.S6g5#
- 1...Bb3
- 2.S6c5#
- 2.S6g5#
- 1...Bd3
- 2.S6c5#
- 2.S6g5#
- 1...Bb5
- 2.S6c5#
- 2.S6g5#
- 1...Ba6
- 2.S6c5#
- 2.S6g5#
- 1...Sc3
- 2.Sxc3#
- 2.Qb7#
- 1...Sf6
- 2.Sxf6#
- 2.Qb7#
- 1...Sh6
- 2.Sf6#
- 2.Qb7#
- 1...g5
- 2.S6c5#
- 2.S6xg5#
- 2.Qb7#
- 1...Kxe4!
- threat
- 1.Qd2+?
- 1...Bd3
- 2.Qxd3#
- 1...Kxe4!
- 1...Bd3
- 1.Qc3?
- threat
- 2.S6c5#
- 2.S6g5#
- 1...Sxc3
- 2.Sxc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...g5
- 2.S6c5#
- 2.S6xg5#
- 1...Kxe4!
- threat
- 1.Sd2?
- Keys
- 1.Qf2!
- threat
- 2.S6c5#
- 2.S6g5#
- 1...Kxe4
- 2.Sc5#
- 1...Sdxf2
- 2.Sc3#
- 1...Sgxf2
- 2.Sf6#
- 1...Sde3
- 2.Sc3#
- 1...Sge3
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...g5
- 2.S6c5#
- 2.S6xg5#
- threat
- 1.Qf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- B(b);OGATE::QAB1(A)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(c);N_GUARD::S(B)
- S(c);N_GUARD::S(B),XS(c)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- P(e);::QAB1(A),XP(e)
- S(a);::QAB1(A)
- S(a);::QAB1(A),XB(b)
- S(c);::QAB1(A),XB(b)
- S(c);::QAB1(A)
- Refutation
- S(a);
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- P(e);::QAB1(A),XP(e)
- S(a);::QAB1(A)
- S(a);::QAB1(A),XB(b)
- S(c);::QAB1(A),XB(b)
- S(c);::QAB1(A)
- Refutation
- S(a);
- Try
- Q(A);CHECK,XS(a)
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR2(A),XB(b)
- Refutation
- K(d);S_FLIGHT,XS(B)
- Try
- Q(A);
- Threat
- DUALS(2)
- Refutation
- K(d);P_SPINB(b),S_FLIGHT,XS(B)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(a);N_GUARD,XQ(A)::S(B)
- Refutation
- K(d);S_FLIGHT,XS(B)
- Try
- Q(A);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR2(A),XB(b)
- Refutation
- K(d);S_FLIGHT,XS(B)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(a);XQ(A)::S(B),XS(a)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- Refutation
- K(d);S_FLIGHT,XS(B)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(d);S_FLIGHT,XS(B)::S(C)
- S(a);N_GUARD,XQ(A)::S(B)
- S(c);N_GUARD,XQ(A)::S(B)
- S(a);N_GUARD::S(B)
- S(c);N_GUARD::S(B)
- S(c);N_GUARD::S(B),XS(c)
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).