MESON Chess Problem Database
Problem Display
PID: 17437 (rNnK1R2/3pp3/1p1R1N2/4k3/4P2b/2n1Q2B/8/8 w - - 0 1)
Rietveld, Johannes Jacob
1st Prize, Skakbladet, 1946
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxd6
- 2.e5#
- 1...Bg3
- 2.Qxg3#
- 1...Sb1
- 2.Rd5#
- 1...Sd1
- 2.Rd5#
- 1...Sa2
- 2.Rd5#
- 1...Se2
- 2.Rd5#
- 1...Sa4
- 2.Rd5#
- 1...Sxe4
- 2.Rd5#
- 1...Sb5
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sxd6
- 2.Sxd7#
- 1...exd6
- 2.Sxd7#
- 1...Kxd6
- Tries
- 1.Kxd7?
- threat
- 2.Sg4#
- 2.Sc6#
- 2.Re6#
- 1...Rxb8
- 2.Sg4#
- 2.Re6#
- 1...Bxf6
- 2.Sc6#
- 2.Re6#
- 1...Sxd6
- 2.Sg4#
- 2.Sc6#
- 1...exd6
- 2.Sg4#
- 2.Sc6#
- 1...exf6
- 2.Sc6#
- 2.Re6#
- 1...Sa7
- 2.Sg4#
- 2.Re6#
- 1...e6
- 2.Sg4#
- 2.Sc6#
- 2.Rxe6#
- 1...Ra7+!
- threat
- 1.Sc6+?
- 1...dxc6
- 2.Re6#
- 1...Kxd6!
- 1...dxc6
- 1.Rxb6?
- threat
- 2.Sg4#
- 2.Sfxd7#
- 2.Sbxd7#
- 1...Rxb8
- 2.Sg4#
- 2.Sxd7#
- 1...Bxf6
- 2.Sxd7#
- 1...Sxe4
- 2.Sbxd7#
- 2.Qxe4#
- 1...exf6
- 2.Sxd7#
- 1...Ra7
- 2.Sg4#
- 1...Sd6
- 2.Sxd7#
- 1...Sa7
- 2.Sg4#
- 2.Sxd7#
- 1...d5
- 2.Sg4#
- 2.Sfd7#
- 2.Sbd7#
- 2.Re6#
- 1...d6
- 2.Sfd7#
- 2.Sc6#
- 2.Sbd7#
- 1...e6
- 2.Sxd7#
- 1...Sxb6!
- threat
- 1.Rc6?
- threat
- 2.Sg4#
- 2.Sfxd7#
- 2.Sbxd7#
- 1...Rxb8
- 2.Sg4#
- 2.Sxd7#
- 1...Bxf6
- 2.Sxd7#
- 1...Sxe4
- 2.Sbxd7#
- 2.Qxe4#
- 1...exf6
- 2.Sxd7#
- 1...Ra7
- 2.Sg4#
- 1...Sd6
- 2.Sxd7#
- 1...Sa7
- 2.Sg4#
- 2.Sxd7#
- 1...d5
- 2.Sg4#
- 2.Sfd7#
- 2.Sbd7#
- 2.Re6#
- 1...d6
- 2.Sfd7#
- 2.Sbd7#
- 1...e6
- 2.Sxd7#
- 1...dxc6!
- threat
- 1.Qg5+?
- 1...Kxd6
- 2.Se8#
- 1...Bxg5!
- 1...Kxd6
- 1.Qxc3+?
- 1...Kxd6
- 2.Se8#
- 2.Qd4#
- 2.Qc7#
- 2.e5#
- 1...Kf4!
- 1...Kxd6
- 1.Kxd7?
- Keys
- 1.Bxd7!
- threat
- 2.Re6#
- 1...Kxd6
- 2.e5#
- 1...Sxe4
- 2.Rd5#
- 1...Sxd6
- 2.Sg4#
- 1...exd6
- 2.Sc6#
- 1...e6
- 2.Rxe6#
- threat
- 1.Bxd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- K(c);OGATE,S_FLIGHT,XR(D)::P(C)
- B(b);N_GUARD::QAB(A),XB(b)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD,P_SPINS(a),XP(C)::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(h);P_PINS(F),SBLOCK,XR(D)::S(E),XP(e)
- P(f);P_PINS(E),SBLOCK,XR(D)::S(F),XP(e)
- Tries
- Try
- K(G);P-FLIGHT,XP(e)
- Threat
- DUALS(3)
- Refutation
- R(g);CHECK
- Try
- S(F);CHECK
- Vars
- P(e);XS(F)::R1(D)
- Refutation
- K(c);S_FLIGHT,XR(D)
- Try
- R(D);XP(d)
- Threat
- DUALS(3)
- Vars
- B(b);XS(E)::S(F),XP(e)
- P(f);XS(E)::S(F),XP(e)
- R(g);::S(E)
- S(h);P_PINS(F)::S(E),XP(e)
- P(f);P_PINS(E)::S(F),XP(e)
- Refutation
- S(h);P_PINS(F),XR(D)
- Try
- R(D);
- Threat
- DUALS(3)
- Vars
- B(b);XS(E)::S(F),XP(e)
- P(f);XS(E)::S(F),XP(e)
- R(g);::S(E)
- S(h);P_PINS(F)::S(E),XP(e)
- P(f);P_PINS(E)::S(F),XP(e)
- Refutation
- P(e);XR(D)
- Try
- Q(A);CHECK
- Vars
- K(c);S_FLIGHT,XR(D)::S(E)
- Refutation
- B(b);XQ(A)
- Try
- Q(A);CHECK,XS(a)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- B(B);XP(e)
- Threat
- R1(D)
- Vars
- K(c);OGATE,S_FLIGHT,XR(D)::P(C)
- S(a);N_GUARD,P_SPINS(a),XP(C)::R1(D)
- S(h);P_PINS(F),SBLOCK,XR(D)::S(E)
- P(f);P_PINS(E),SBLOCK,XR(D)::S(F)
- P(f);P_PINS(E)::R1(D),XP(f)
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).