MESON Chess Problem Database
Problem Display
PID: 54000 (8/2qPR1p1/Q1n5/4P3/1NnpkNBR/4p2K/2rpP2B/8 w - - 0 1)
Rasch Nielsen, Poul Anker
1st Place, Norwegian Championship, 1960-1961
#2
11 + 9
| 21 | Deutsche Schachblatter | 1962 |
| 5454 | Near Snap | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qxc6#
- 1...Qb8
- 2.Qxc6#
- 1...Qd8
- 2.Qxc6#
- 1...Qa7
- 2.Qxc6#
- 1...Sa3
- 2.Qd3#
- 1...S4a5
- 2.Qd3#
- 1...S4xe5
- 2.Qd3#
- 1...Sb6
- 2.Qd3#
- 1...Sd6
- 2.Qd3#
- 1...Sxb4
- 2.Qg6#
- 1...S6a5
- 2.Qg6#
- 1...S6xe5
- 2.Qg6#
- 1...Sa7
- 2.Qg6#
- 1...Sb8
- 2.Qg6#
- 1...Sd8
- 2.Qg6#
- 1...Qxe5
- Tries
- 1.Sg2?
- threat
- 2.Be6#
- 1...Qxe5
- 2.Qxc6#
- 1...S4xe5
- 2.Qd3#
- 1...S6xe5
- 2.Qg6#
- 1...g5!
- threat
- 1.Sfd3?
- threat
- 2.Sc5#
- 2.Be6#
- 1...Qxe5
- 2.Sc5#
- 2.Qxc6#
- 1...Sxb4
- 2.Be6#
- 1...S6xe5
- 2.Qg6#
- 1...Sxe7
- 2.Be6#
- 1...Qa5
- 2.Be6#
- 1...Qb6
- 2.Be6#
- 1...Qd6
- 2.Be6#
- 1...Qa7
- 2.Be6#
- 2.Qxc6#
- 1...Sb2
- 2.Be6#
- 1...Sa3
- 2.Be6#
- 1...S4a5
- 2.Be6#
- 1...Sb6
- 2.Be6#
- 1...Sd6
- 2.Be6#
- 1...S6a5
- 2.Be6#
- 2.Qg6#
- 1...Sa7
- 2.Be6#
- 2.Qg6#
- 1...Sb8
- 2.Be6#
- 2.Qg6#
- 1...Sd8
- 2.Be6#
- 2.Qg6#
- 1...g5
- 2.Sc5#
- 1...S4xe5!
- threat
- 1.Sfd5?
- threat
- 2.Be6#
- 1...S4xe5
- 2.Qd3#
- 1...S6xe5
- 2.Qg6#
- 1...g5
- 2.Sf6#
- 1...Qxe5!
- threat
- 1.Se6?
- threat
- 2.Sc5#
- 2.Sg5#
- 1...S4xe5
- 2.Sg5#
- 1...S6xe5
- 2.Sg5#
- 1...Sxe7
- 2.Sg5#
- 1...Qa5
- 2.Sg5#
- 1...Qb6
- 2.Sg5#
- 1...Qd6
- 2.Sg5#
- 1...Qa7
- 2.Sg5#
- 2.Qxc6#
- 1...Sb2
- 2.Sg5#
- 1...Sa3
- 2.Sg5#
- 2.Qd3#
- 1...S4a5
- 2.Sg5#
- 2.Qd3#
- 1...Sb6
- 2.Sg5#
- 2.Qd3#
- 1...Sd6
- 2.Sg5#
- 2.Qd3#
- 1...S6a5
- 2.Sg5#
- 1...Sa7
- 2.Sg5#
- 1...Sb8
- 2.Sg5#
- 1...Sd8
- 2.Sg5#
- 1...d3
- 2.exd3#
- 1...g5
- 2.Sc5#
- 2.Sxg5#
- 1...Sxb4!
- threat
- 1.Sg6?
- threat
- 2.Be6#
- 1...Qxe5
- 2.Qxc6#
- 1...S4xe5
- 2.Qd3#
- 1...S6xe5!
- threat
- 1.Sg2?
- Keys
- 1.Sh5!
- threat
- 2.Be6#
- 1...Qxe5
- 2.Qxc6#
- 1...S4xe5
- 2.Qd3#
- 1...S6xe5
- 2.Qg6#
- 1...g5
- 2.Sf6#
- threat
- 1.Sh5!
This anticipates 48245(1989)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(h);N_GUARD,P_SPINQ(h),XP(H)::QAB(I),XS(g)
- Q(h);N_GUARD::QAB(I),XS(g)
- S(d);OGATE::QAB1(I)
- S(d);OGATE,P_SPINS(d),XP(H)::QAB1(I)
- S(g);OGATE,XS(D)::QAB(I)
- S(g);OGATE::QAB(I)
- S(g);OGATE,P_SPINS(g),XP(H)::QAB(I)
- Tries
- Try
- S(E);
- Threat
- R(G)+B(F)
- Vars
- Q(h);N_GUARD,P_SPINQ(h),XP(H)::QAB(I),XS(g)
- S(d);OGATE,P_SPINS(d),XP(H)::QAB1(I)
- S(g);OGATE,P_SPINS(g),XP(H)::QAB(I)
- Refutation
- P(i);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(g);XS(D)::R(G)+B(F)
- S(g);OGATE,P_SPINS(g),XP(H)::QAB(I)
- S(g);XR(K)::R(G)+B(F)
- Q(h);::R(G)+B(F)
- S(d);::R(G)+B(F)
- P(i);::S(E)
- Refutation
- S(d);P_SPINS(d),XP(H)
- Try
- S(E);
- Threat
- R(G)+B(F)
- Vars
- S(d);OGATE,P_SPINS(d),XP(H)::QAB1(I)
- S(g);OGATE,P_SPINS(g),XP(H)::QAB(I)
- P(i);N_GUARD::S(E)
- Refutation
- Q(h);P_SPINQ(h),XP(H)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(d);XP(H)::S(E)
- S(g);XP(H)::S(E)
- S(g);XR(K)::S(E)
- Q(h);::S(E)
- S(d);::S(E)
- S(g);::S(E)
- P(e);OGATE::P(A),XP(e)
- Refutation
- S(g);XS(D)
- Try
- S(E);
- Threat
- R(G)+B(F)
- Vars
- Q(h);N_GUARD,P_SPINQ(h),XP(H)::QAB(I),XS(g)
- S(d);OGATE,P_SPINS(d),XP(H)::QAB1(I)
- Refutation
- S(g);P_SPINS(g),XP(H)
- Try
- Actual
- S(E);
- Threat
- R(G)+B(F)
- Vars
- Q(h);N_GUARD,P_SPINQ(h),XP(H)::QAB(I),XS(g)
- S(d);OGATE,P_SPINS(d),XP(H)::QAB1(I)
- S(g);OGATE,P_SPINS(g),XP(H)::QAB(I)
- P(i);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).