MESON Chess Problem Database
Problem Display
PID: 239942 (3b3q/1p1N4/4Q3/1p1n1p1p/1B1k4/Np3K2/8/1B6 w - - 0 1)
Haring, Jacobus
Parallele 50, 1947
#2
6 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Qxe5#
- 1...Qh6
- 2.Qe5#
- 1...Qh7
- 2.Qe5#
- 1...Qf8
- 2.Qe5#
- 1...Qg8
- 2.Qe5#
- 1...Sc3
- 2.Bc5#
- 1...Se3
- 2.Sxb5#
- 1...Sxb4
- 2.Sxb5#
- 1...Sf4
- 2.Sxb5#
- 1...Sb6
- 2.Sxb5#
- 1...Sf6
- 2.Sxb5#
- 2.Qe5#
- 1...Se7
- 2.Sxb5#
- 1...f4
- 2.Qe4#
- 1...Qe5
- Tries
- 1.Sc2+?
- 1...Kd3
- 2.Qe2#
- 1...Kc4
- 2.Qe2#
- 1...bxc2!
- 1...Kd3
- 1.Sc5?
- threat
- 2.Sxb3#
- 1...b2
- 2.Sb3#
- 1...Sxb4!
- threat
- 1.Sb6?
- threat
- 2.Sxb5#
- 2.Qxd5#
- 1...Sxb4
- 2.Qe3#
- 1...Sxb6
- 2.Sxb5#
- 1...Qe5
- 2.Sxb5#
- 1...Qe8
- 2.Qxd5#
- 1...Qg8
- 2.Sxb5#
- 1...Sc3
- 2.Qe3#
- 1...Se3
- 2.Sxb5#
- 2.Qxe3#
- 1...Sf4
- 2.Sxb5#
- 2.Qe3#
- 1...Sf6
- 2.Sxb5#
- 2.Qe3#
- 1...Sc7
- 2.Qe3#
- 1...Se7
- 2.Sxb5#
- 2.Qe3#
- 1...Bxb6!
- threat
- 1.Bxf5?
- threat
- 2.Qe4#
- 1...Sxb4
- 2.Sxb5#
- 1...Qe5
- 2.Qxe5#
- 1...Sc3
- 2.Bc5#
- 1...Sf6
- 2.Sxb5#
- 2.Qe5#
- 1...Qe8!
- threat
- 1.Qc6?
- threat
- 2.Sxb5#
- 2.Qc5#
- 1...Qf8
- 2.Sxb5#
- 1...Bb6
- 2.Sxb5#
- 1...Be7
- 2.Sxb5#
- 1...Sc3
- 2.Bxc3#
- 2.Bc5#
- 2.Qc5#
- 1...Sc7
- 2.Bc3#
- 2.Qc5#
- 1...b6
- 2.Sxb5#
- 1...bxc6!
- threat
- 1.Sc2+?
- Keys
- 1.Be4!
- threat
- 2.Qxd5#
- 1...fxe4+
- 2.Qxe4#
- 1...Sxb4
- 2.Sxb5#
- 1...Qe5
- 2.Qxe5#
- 1...Qg8
- 2.Qe5#
- 1...Sc3
- 2.Bc5#
- 1...Se3
- 2.Sxb5#
- 1...Sf4
- 2.Sxb5#
- 1...Sb6
- 2.Sxb5#
- 1...Sf6
- 2.Sxb5#
- 2.Qe5#
- 1...Sc7
- 2.Qb6#
- 1...Se7
- 2.Sxb5#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(i);N_GUARD::QAB1(E),XQ(i)
- Q(i);N_GUARD::QAB1(E)
- S(d);SBLOCK::B(D)
- S(d);::S(B),XP(c)
- S(d);XB(D)::S(B),XP(c)
- P(e);N_GUARD::QAR1(E)
- Tries
- Try
- S(B);CHECK
- Vars
- K(b);P-FLIGHT::QAB1(E)
- K(b);P-FLIGHT,P_SPINS(d)::QAB(E)
- Refutation
- P(a);XS(B)
- Try
- S(F);
- Threat
- S(F),XP(a)
- Vars
- P(a);::S(F)
- Refutation
- S(d);XB(D)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XB(D)::QAB1(E)
- S(d);XS(F)::S(B),XP(c)
- Q(i);::S(B),XP(c)
- Q(i);::QAR1(E),XS(d)
- S(d);N_GUARD::QAB1(E)
- Refutation
- B(h);XS(F)
- Try
- B(A);XP(e)
- Threat
- QAR1(E)
- Vars
- S(d);XB(D)::S(B),XP(c)
- Q(i);N_GUARD::QAB1(E),XQ(i)
- S(d);SBLOCK::B(D)
- Refutation
- Q(i);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(i);::S(B),XP(c)
- B(h);::S(B),XP(c)
- P(g);::S(B),XP(c)
- Refutation
- P(g);XQ(E)
- Try
- Actual
- B(A);
- Threat
- QAR1(E),XS(d)
- Vars
- P(e);CHECK,OGATE,XB(A)::QAR1(E),XP(e)
- S(d);XB(D)::S(B),XP(c)
- Q(i);N_GUARD::QAB1(E),XQ(i)
- Q(i);N_GUARD::QAB1(E)
- S(d);SBLOCK::B(D)
- S(d);::S(B),XP(c)
- S(d);N_GUARD,S_CUTB(h)::QAB(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).