MESON Chess Problem Database
Problem Display
PID: 60223 (b3N2B/2q3r1/4p3/1PpkN3/2p1rp2/2PP4/1K1Q4/7B w - - 0 1)
van Dijk, Nils Gustav Gerard
1/2 Place, Skandin. CT, 1970
#2
9 + 9
| 3751 | FIDE Album (1968-1970) | 1977 |
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.dxe4#
- 1...Rg1
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rg2
- 2.dxc4#
- 1...Rg3
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rg4
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rg5
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rg6
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rd7
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Re7
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rf7
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rh7
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Rg8
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Qxe5
- Tries
- 1.Sxc4?
- threat
- 2.Sf6#
- 2.Bxe4#
- 1...Qe5
- 2.Sb6#
- 1...Qd8
- 2.Bxe4#
- 1...Qe7
- 2.Bxe4#
- 1...Qf7
- 2.Bxe4#
- 1...Rg2
- 2.Sf6#
- 2.Sxc7#
- 1...Rg6
- 2.Sxc7#
- 2.Bxe4#
- 1...Rf7
- 2.Bxe4#
- 1...f3
- 2.Sf6#
- 1...e5!
- threat
- 1.Sf7?
- threat
- 2.Sf6#
- 2.Sxc7#
- 2.Bxe4#
- 2.dxe4#
- 1...Rxf7
- 2.Bxe4#
- 2.dxe4#
- 1...cxd3
- 2.Qxd3#
- 1...e5
- 2.Sxc7#
- 1...f3
- 2.Sf6#
- 2.Sxc7#
- 1...Qa5
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qe5
- 2.dxe4#
- 1...Qb6
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qd6
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qb8
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qd8
- 2.Bxe4#
- 2.dxe4#
- 1...Qc6
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qa7
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qb7
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qd7
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Qe7
- 2.Bxe4#
- 2.dxe4#
- 1...Qc8
- 2.Sf6#
- 2.Bxe4#
- 2.dxe4#
- 1...Rg2
- 2.Sf6#
- 2.Sxc7#
- 1...Rg6
- 2.Sxc7#
- 2.Bxe4#
- 2.dxe4#
- 1...Qxf7!
- threat
- 1.Bxg7?
- threat
- 2.Bxe4#
- 2.dxc4#
- 2.dxe4#
- 1...Qxe5
- 2.dxe4#
- 1...cxd3
- 2.Qxd3#
- 1...f3
- 2.dxc4#
- 1...Qxg7!
- threat
- 1.Sxc4?
- Keys
- 1.Qe2!
- threat
- 2.Qxe4#
- 1...Kxe5
- 2.Qh5#
- 1...Qxe5
- 2.dxc4#
- 1...Rg2
- 2.dxe4#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(g);P_PINP(D),SBLOCK,XS(G)::QAR(C)+P(E)DCHECK,XR(b)
- R(h);N_SPINR(b),P_PINQ(C)::QAR(C)+P(E)DCHECK,XP(a)
- Tries
- Try
- S(G);XP(a)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,P_PINP(D),SBLOCK::S(G)
- Q(g);::B(A),XR(b)
- R(h);::B(A),XR(b)
- P(c);N_SPINR(b)::S(H)
- Refutation
- P(f);
- Try
- S(G);
- Threat
- DUALS(4)
- Vars
- P(a);OGATE,P_SPINP(a),XP(E)::QAR2(C),XP(a)
- P(f);::S(H),XQ(g)
- Q(g);P_PINP(D)::QAR(C)+P(E)DCHECK,XR(b)
- Refutation
- Q(g);XS(G)
- Try
- B(I);XR(h)
- Threat
- DUALS(3)
- Vars
- Q(g);P_PINP(D),XS(G)::QAR(C)+P(E)DCHECK,XR(b)
- P(a);OGATE,P_SPINP(a),XP(E)::QAR2(C),XP(a)
- P(c);N_SPINR(b)::QAR(C)+P(E)DCHECK,XP(a)
- Refutation
- Q(g);XB(I)
- Try
- Actual
- Q(C);
- Threat
- QAB1(C),XR(b)
- Vars
- K(e);OGATEB,P-FLIGHT,XS(G)::QAR(C)
- Q(g);P_PINP(D),SBLOCK,XS(G)::P(E),XP(a)
- R(h);N_SPINR(b),P_PINQ(C)::P(E),XR(b)
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).