MESON Chess Problem Database
Problem Display
PID: 108425 (2nr1b2/2Q1NPB1/B4P2/3p1b2/n2kp1p1/K3N2q/3P1P2/2R1R3 w - - 0 1)
Hjelle, David
Association Polonaise, 1949
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sc2#
- 2.Sxf5#
- 1...Qg2
- 2.Sc2#
- 2.Sxf5#
- 1...Qh1
- 2.Sc2#
- 2.Sxf5#
- 1...Qh2
- 2.Sc2#
- 2.Sxf5#
- 1...Qxe3+
- 2.dxe3#
- 2.fxe3#
- 1...Qh4
- 2.Sc2#
- 2.Sxf5#
- 1...Qh5
- 2.Sc2#
- 1...Qh6
- 2.Sc2#
- 2.Sxf5#
- 1...Qh7
- 2.Sc2#
- 1...Qh8
- 2.Sc2#
- 2.Sxf5#
- 1...Bxe7+
- 2.fxe7#
- 1...Bxg7
- 2.Sxf5#
- 2.Sc6#
- 1...Sb2
- 2.Qc3#
- 1...Sc3
- 2.Sc2#
- 2.Sxf5#
- 2.Qxc3#
- 2.dxc3#
- 1...Sc5
- 2.Sxf5#
- 2.Sc6#
- 1...Sab6
- 2.Qc3#
- 1...Sd6
- 2.Sc6#
- 1...g3
- 2.Sc2#
- 1...Qf1
- Tries
- 1.Ka2?
- threat
- 2.Sc2#
- 2.S3xf5#
- 2.S7xf5#
- 2.Sc6#
- 1...Sc3+
- 2.Qxc3#
- 2.dxc3#
- 1...Qxe3
- 2.Sxf5#
- 2.Sc6#
- 2.dxe3#
- 2.fxe3#
- 1...Bxe7
- 2.Sc2#
- 2.Sxf5#
- 2.fxe7#
- 1...Sxe7
- 2.Sc2#
- 1...Sd6
- 2.Sc6#
- 1...Qf3
- 2.Sc2#
- 2.Sc6#
- 1...Qh5
- 2.Sc2#
- 2.Sc6#
- 1...Qh7
- 2.Sc2#
- 2.Sc6#
- 1...Be6
- 2.Sc2#
- 2.Sc6#
- 1...Bg6
- 2.Sc2#
- 2.Sc6#
- 1...Bd7
- 2.Sc2#
- 1...Bh7
- 2.Sc2#
- 2.Sc6#
- 1...Sa7
- 2.Sc2#
- 2.S3xf5#
- 2.S7xf5#
- 1...g3
- 2.Sc2#
- 2.Sc6#
- 1...Rd6!
- threat
- 1.Kb4?
- threat
- 2.Sc2#
- 2.Sxf5#
- 1...Bxe7+
- 2.fxe7#
- 1...Qxe3
- 2.dxe3#
- 2.fxe3#
- 1...Sxe7
- 2.Sc2#
- 1...Sd6
- 2.Sc6#
- 1...Qf3
- 2.Sc2#
- 1...Qh5
- 2.Sc2#
- 1...Qh7
- 2.Sc2#
- 1...Be6
- 2.Sc2#
- 1...Bg6
- 2.Sc2#
- 1...Bd7
- 2.Sc2#
- 1...Bh7
- 2.Sc2#
- 1...g3
- 2.Sc2#
- 1...Rd6!
- threat
- 1.Rc3?
- threat
- 2.Sc2#
- 2.Sxf5#
- 1...Bxe7+
- 2.fxe7#
- 1...Qxe3
- 2.dxe3#
- 2.fxe3#
- 1...Sxe7
- 2.Sc2#
- 1...Sd6
- 2.Sc6#
- 1...Qf3
- 2.Sc2#
- 1...Qh5
- 2.Sc2#
- 1...Qh7
- 2.Sc2#
- 1...Be6
- 2.Sc2#
- 1...Bg6
- 2.Sc2#
- 1...Bd7
- 2.Sc2#
- 1...Bh7
- 2.Sc2#
- 1...g3
- 2.Sc2#
- 1...Rd6!
- threat
- 1.Qc5+?
- 1...Sxc5
- 2.Sc6#
- 1...Ke5!
- 1...Sxc5
- 1.d3?
- threat
- 2.Sc2#
- 2.Sxf5#
- 1...Bxe7+
- 2.fxe7#
- 1...Qxe3
- 2.fxe3#
- 1...Sxe7
- 2.Sc2#
- 1...exd3
- 2.Sxf5#
- 1...Sd6
- 2.Sc6#
- 1...Qf3
- 2.Sc2#
- 1...Qh5
- 2.Sc2#
- 1...Qh7
- 2.Sc2#
- 1...Be6
- 2.Sc2#
- 1...Bg6
- 2.Sc2#
- 1...Bd7
- 2.Sc2#
- 1...Bh7
- 2.Sc2#
- 1...Sc5
- 2.S3xf5#
- 2.S7xf5#
- 2.Sc6#
- 1...g3
- 2.Sc2#
- 1...Rd6!
- threat
- 1.Ka2?
- Keys
- 1.f4!
- threat
- 2.Qe5#
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe7+
- 2.fxe7#
- 1...exf4 ep
- 2.Sxf5#
- 1...gxf4 ep
- 2.Sc2#
- 1...Rd6
- 2.Sxf5#
- 1...Sc3
- 2.Sc2#
- 2.Sxf5#
- 2.Qxc3#
- 2.dxc3#
- 1...Sd6
- 2.Sc6#
- threat
- 1.f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(a);N_PINS(F),P_PINS(J)::S(F)
- B(j);CHECK,OGATE,XS(J)::B(L)+P(H),XB(j)
- S(b);N_GUARD::QAB1(I)
- S(h);::S(J)
- P(e);N_PINS(F),P_PINS(J)::S(F)
- Tries
- Try
- K(E);N_SPINS(F),P-FLIGHT
- Threat
- DUALS(4)
- Vars
- S(h);XS(J)::S(F)
- S(h);::S(J)
- B(g);::S(F)
- Refutation
- R(i);
- Try
- K(E);N_SPINS(F),P_SPINS(J),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- B(j);CHECK,OGATE,XS(J)::B(L)+P(H),XB(j)
- S(h);XS(J)::S(F)
- S(h);N_PINS(J)::S(J)
- Q(a);::S(F)
- B(g);::S(F)
- P(e);::S(F)
- Refutation
- R(i);N_PINS(J)
- Try
- R(A);N_SPINS(F),P_SPINS(J)
- Threat
- DUALS(2)
- Vars
- B(j);CHECK,OGATE,XS(J)::B(L)+P(H),XB(j)
- S(h);XS(J)::S(F)
- S(h);N_PINS(J)::S(J)
- Q(a);::S(F)
- B(g);::S(F)
- P(e);::S(F)
- Refutation
- R(i);N_PINS(J)
- Try
- Q(I);CHECK
- Vars
- S(b);XQ(I)::S(J)
- Refutation
- K(c);P_SPINP(f),S_FLIGHT
- Try
- P(C);N_SPINS(F),P_SPINS(J)
- Threat
- DUALS(2)
- Vars
- B(j);CHECK,OGATE,XS(J)::B(L)+P(H),XB(j)
- Q(a);OGATE,P_PINP(C),XS(F)::P(D),XQ(a)
- S(h);XS(J)::S(F)
- P(d);XP(C)::S(F),XB(g)
- S(h);N_PINS(J)::S(J)
- Q(a);::S(F)
- B(g);::S(F)
- P(e);::S(F)
- Refutation
- R(i);N_PINS(J)
- Try
- Actual
- P(D);
- Threat
- QAB1(I)
- Vars
- Q(a);CHECK,OGATE,P_PINS(J),XS(F)::P(C),XQ(a)
- B(j);CHECK,OGATE,XS(J)::B(L)+P(H),XB(j)
- P(d);EP,N_PINS(F),P_PINS(J),XP(D)::S(F),XB(g)
- P(e);EP,N_PINS(F),P_PINS(J),XP(D)::S(F)
- R(i);::S(J),XB(g)
- S(h);::S(J)
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).