MESON Chess Problem Database
Problem Display
PID: 165609 (8/2p4n/8/2pn4/3Nk1P1/4rN2/Q1PRq1PB/KB2R3 w - - 0 1)
van Dijk, Nils Gustav Gerard
4th Comm., Weenink MT, 1962
#2
11 + 7
| 102 | Probleemblad | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.cxd3#
- 1...Qxf3
- 2.c3#
- 2.c4#
- 2.gxf3#
- 1...Qa6
- 2.c4#
- 1...Qf2
- 2.c3#
- 2.c4#
- 1...Qxg2
- 2.c3#
- 2.c4#
- 1...Sc3
- 2.Qe6#
- 1...Sb4
- 2.Qe6#
- 1...Sb6
- 2.Qe6#
- 1...Sdf6
- 2.Qe6#
- 1...Se7
- 2.Qe6#
- 1...Sg5
- 2.Sxg5#
- 1...Shf6
- 2.Sg5#
- 1...Sf8
- 2.Sg5#
- 1...cxd4
- 2.Rxd4#
- 1...Qd3
- Tries
- 1.Sxe2?
- threat
- 2.Qc4#
- 2.Qxd5#
- 1...Rxf3
- 2.Sc3#
- 1...Ra3
- 2.Sc3#
- 1...Rb3
- 2.Sc3#
- 1...Rc3
- 2.Sxc3#
- 1...Rd3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 2.Qc4#
- 2.Qe6#
- 1...Sb4
- 2.Sc3#
- 2.Qc4#
- 2.Qe6#
- 1...Sf4
- 2.Sc3#
- 2.Sg3#
- 2.Qc4#
- 1...Sb6
- 2.Sc3#
- 2.Qe6#
- 1...Sdf6
- 2.Sc3#
- 2.Qc4#
- 2.Qe6#
- 1...Se7
- 2.Sc3#
- 2.Qc4#
- 2.Qe6#
- 1...Shf6
- 2.Sg5#
- 2.Qc4#
- 1...c4
- 2.Rd4#
- 2.Qxc4#
- 1...c6
- 2.Qc4#
- 1...Rxe2!
- threat
- 1.Rdxe2?
- threat
- 2.c3#
- 2.c4#
- 1...cxd4
- 2.Sd2#
- 1...Sc3
- 2.Rxe3#
- 2.Qe6#
- 1...Sb4
- 2.Rxe3#
- 2.Qe6#
- 1...Sf4
- 2.Rxe3#
- 1...c4
- 2.c3#
- 1...Rxe2!
- threat
- 1.c3+?
- 1...Qd3
- 2.Bxd3#
- 1...Rd3!
- 1...Qd3
- 1.c4+?
- 1...Qd3
- 2.Bxd3#
- 1...Rd3!
- 1...Qd3
- 1.Sxe2?
- Keys
- 1.Sf5!
- threat
- 2.Qxd5#
- 1...Qxd2
- 2.Sxd2#
- 1...Qd3
- 2.cxd3#
- 1...Qc4
- 2.Qxc4#
- 1...Qa6
- 2.c4#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Sc3
- 2.Qe6#
- 1...Sb4
- 2.Qe6#
- 1...Sf4
- 2.Sg3#
- 1...Sb6
- 2.Qe6#
- 1...Sdf6
- 2.Qe6#
- 1...Se7
- 2.Qe6#
- 1...Shf6
- 2.Sg5#
- 1...c4
- 2.Rd4#
- 1...c6
- 2.Sd6#
- threat
- 1.Sf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- Q(a);OGATE,P_SPINR(b)::P(E),XQ(a)
- Q(a);N_GUARD,P_PINQ(D),P_SPINR(b)::B(B)+P(E)
- S(e);OGATE::QAR2(D)
- S(g);N_GUARD::S(I),XS(g)
- S(g);N_GUARD::S(I)
- P(d);OGATE,XS(J)::R1(F),XP(d)
- Tries
- Try
- S(J);XQ(a)
- Threat
- DUALS(2)
- Vars
- R(b);XS(I)::R(C)+S(J),DCHECK
- R(b);P_PINQ(D)::R(C)+S(J),DCHECK
- R(b);::R(C)+S(J),DCHECK
- R(b);::R(C)+S(J),DCHECK,XR(b)
- P(f);::QAR2(D)
- Refutation
- R(b);P_SPINR(b),XS(J)
- Try
- R(F);P_PINR(b),XQ(a)
- Threat
- DUALS(2)
- Vars
- P(d);SBLOCK,XS(J)::S(I)
- S(e);N_GUARD::R1(F),XR(b)
- P(d);::B(B)+P(E)
- Refutation
- R(b);XR(F)
- Try
- P(E);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a),P_SPINR(b)::B(B),XQ(a)
- Refutation
- R(b);P_SPINQ(a),P_SPINR(b)
- Try
- P(E);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a),P_SPINR(b)::B(B),XQ(a)
- Refutation
- R(b);P_SPINQ(a),P_SPINR(b)
- Try
- Actual
- S(J);
- Threat
- QAB1(D),XS(e)
- Vars
- Q(a);P_SPINR(b),XR(F)::S(I),XQ(a)
- Q(a);OGATE,P_SPINR(b)::P(E),XQ(a)
- Q(a);N_GUARD,P_SPINR(b)::QAR2(D),XQ(a)
- Q(a);N_GUARD,P_PINQ(D),P_SPINR(b)::B(B)+P(E)
- R(b);N_GUARD,P_PINQ(D),P_SPINQ(a)::B(B)+P(E)
- R(b);OGATE,P_SPINQ(a)::B(B)+P(E),XR(b)
- R(b);OGATE,P_SPINQ(a)::P(E),XR(b)
- S(e);OGATE::QAR2(D)
- S(e);SBLOCK::S(J)
- S(g);N_GUARD::S(I)
- P(d);N_GUARD::R1(F)
- P(f);N_GUARD::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).