MESON Chess Problem Database
Problem Display
PID: 245118 (8/3B4/r7/1RPkPR2/p1npn1pr/2pPp3/8/K2Q2b1 w - - 0 1)
Haring, Jacobus
De Maasbode, 1958
#2
8 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.e6#
- 1...Scd2
- 2.e6#
- 1...Sa3
- 2.e6#
- 1...Sa5
- 2.e6#
- 1...Sb6
- 2.e6#
- 1...Scd6
- 2.exd6#
- 1...Sed2
- 2.c6#
- 1...Sf2
- 2.c6#
- 1...Sg3
- 2.c6#
- 1...Sg5
- 2.c6#
- 1...Sed6
- 2.cxd6#
- 1...Sf6
- 2.c6#
- 1...Sb2
- Tries
- 1.Qc2?
- threat
- 2.dxe4#
- 1...Sxe5
- 2.Qa2#
- 1...Sxc5
- 2.Qg2#
- 1...Sb2
- 2.e6#
- 1...Scd2
- 2.e6#
- 1...Sa3
- 2.e6#
- 1...Sa5
- 2.e6#
- 1...Sb6
- 2.e6#
- 1...Scd6
- 2.exd6#
- 1...Sed2
- 2.c6#
- 1...Sf2
- 2.c6#
- 1...Sg3
- 2.c6#
- 1...Sg5
- 2.c6#
- 1...Sed6
- 2.cxd6#
- 1...Sf6
- 2.c6#
- 1...g3!
- threat
- 1.Qb3?
- threat
- 2.Qxc4#
- 2.dxc4#
- 2.e6#
- 1...Sxc5
- 2.Qxc4#
- 1...Rh5
- 2.Qxc4#
- 2.dxc4#
- 1...Re6
- 2.Qxc4#
- 2.dxc4#
- 1...Rf6
- 2.Qxc4#
- 2.dxc4#
- 2.exf6#
- 1...Bh2
- 2.Qxc4#
- 2.dxc4#
- 1...Sd2
- 2.c6#
- 2.e6#
- 1...Sf2
- 2.Qxc4#
- 2.c6#
- 2.e6#
- 1...Sg3
- 2.Qxc4#
- 2.c6#
- 1...Sg5
- 2.Qxc4#
- 2.c6#
- 2.e6#
- 1...Sd6
- 2.cxd6#
- 2.exd6#
- 1...Sf6
- 2.Qxc4#
- 2.c6#
- 2.exf6#
- 2.e6#
- 1...axb3+!
- threat
- 1.Qf3?
- threat
- 2.Qxe4#
- 2.dxe4#
- 2.c6#
- 1...Sxe5
- 2.Qxe4#
- 1...Ra5
- 2.Qxe4#
- 2.dxe4#
- 1...Rb6
- 2.Qxe4#
- 2.dxe4#
- 2.cxb6#
- 1...Rc6
- 2.Qxe4#
- 2.dxe4#
- 1...Sb2
- 2.Qxe4#
- 2.c6#
- 2.e6#
- 1...Sd2
- 2.c6#
- 2.e6#
- 1...Sa3
- 2.Qxe4#
- 2.e6#
- 1...Sa5
- 2.Qxe4#
- 2.c6#
- 2.e6#
- 1...Sb6
- 2.Qxe4#
- 2.cxb6#
- 2.c6#
- 2.e6#
- 1...Sd6
- 2.cxd6#
- 2.exd6#
- 1...g3
- 2.c6#
- 1...gxf3!
- threat
- 1.Qc2?
- Keys
- 1.Qe2!
- threat
- 2.dxc4#
- 1...Sxe5
- 2.Qa2#
- 1...Sxc5
- 2.Qg2#
- 1...Sb2
- 2.e6#
- 1...Scd2
- 2.e6#
- 1...Sa3
- 2.e6#
- 1...Sa5
- 2.e6#
- 1...Sb6
- 2.e6#
- 1...Scd6
- 2.exd6#
- 1...Sed2
- 2.c6#
- 1...Sf2
- 2.c6#
- 1...Sg3
- 2.c6#
- 1...Sg5
- 2.c6#
- 1...Sed6
- 2.cxd6#
- 1...Sf6
- 2.c6#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(e);N_GUARD::R(G)+P(F)
- S(e);OGATE::R(G)+P(F),XS(e)
- S(g);N_GUARD::R(D)+P(E)
- S(g);OGATE::R(D)+P(E),XS(g)
- Tries
- Try
- Q(B);
- Threat
- P(C),XS(g)
- Vars
- S(e);OGATEB,P_SPINS(e),XP(F)::QAB(B)
- S(g);OGATEB,P_SPINS(g),XP(E)::QAB(B)
- S(e);N_GUARD::R(G)+P(F)
- S(e);OGATE::R(G)+P(F),XS(e)
- S(g);N_GUARD::R(D)+P(E)
- S(g);OGATE::R(D)+P(E),XS(g)
- Refutation
- P(h);
- Try
- Q(B);P_PINS(e)
- Threat
- DUALS(3)
- Vars
- S(g);XP(E)::QAB1(B),XS(e)
- Refutation
- P(d);CHECK,N_SPINS(e),XQ(B)
- Try
- Q(B);P_PINS(g)
- Threat
- DUALS(3)
- Vars
- S(e);XP(F)::QAB1(B),XS(g)
- P(h);::R(D)+P(E)
- Refutation
- P(h);N_SPINS(g),XQ(B)
- Try
- Actual
- Q(B);
- Threat
- P(C),XS(e)
- Vars
- S(e);OGATEB,P_SPINS(e),XP(F)::QAB(B)
- S(g);OGATEB,P_SPINS(g),XP(E)::QAB(B)
- S(e);N_GUARD::R(G)+P(F)
- S(e);OGATE::R(G)+P(F),XS(e)
- S(g);N_GUARD::R(D)+P(E)
- S(g);OGATE::R(D)+P(E),XS(g)
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).