MESON Chess Problem Database
Problem Display
PID: 79994 (1B2q3/3r1Q1b/NR5r/p2pp1R1/1N1k4/1P3P2/3K2n1/1B6 w - - 0 1)
van Dooren, Rene
Het Belgisch Schaakbord (L'Echiquier Belge), 1990
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxf7
- 2.Bxe5#
- 1...Qc8
- 2.Bxe5#
- 1...Qd8
- 2.Bxe5#
- 1...Qf8
- 2.Bxe5#
- 1...Qg8
- 2.Bxe5#
- 1...Rh1
- 2.Sc6#
- 1...Rh2
- 2.Sc6#
- 1...Rh3
- 2.Sc6#
- 1...Rh4
- 2.Sc6#
- 1...Rh5
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 1...Rg6
- 2.Sc2#
- 1...Ra7
- 2.Qxd5#
- 1...Rb7
- 2.Qxd5#
- 1...Rc7
- 2.Qxd5#
- 1...Re7
- 2.Qxd5#
- 1...Bc2
- 2.Sxc2#
- 1...Bg6
- 2.Sc6#
- 1...Bg8
- 2.Sc2#
- 1...axb4
- 2.Rxb4#
- 1...e4
- 2.Sc2#
- 1...Qxf7
- Tries
- 1.Rg4+?
- 1...Be4
- 2.Sc2#
- 1...e4
- 2.Sc2#
- 1...Sf4!
- 1...Be4
- 1.Rgg6?
- threat
- 2.Sc2#
- 2.Sc6#
- 1...Rxg6
- 2.Sc2#
- 1...Rxf7
- 2.Sc2#
- 1...Bxg6
- 2.Sc6#
- 1...axb4
- 2.Rxb4#
- 1...Se1
- 2.Sc6#
- 1...Qe6
- 2.Sc2#
- 1...Rd6
- 2.Sc2#
- 1...Ra7
- 2.Sc2#
- 2.Qxd5#
- 1...Rb7
- 2.Sc2#
- 2.Qxd5#
- 1...Rc7
- 2.Qxd5#
- 1...Re7
- 2.Sc2#
- 2.Qxd5#
- 1...Rd8
- 2.Sc2#
- 1...Se3
- 2.Sc6#
- 1...Qc8!
- threat
- 1.Rbg6?
- threat
- 2.Sc2#
- 2.Sc6#
- 1...Rxg6
- 2.Sc2#
- 1...Rxf7
- 2.Sc2#
- 1...Bxg6
- 2.Sc6#
- 1...Se1
- 2.Sc6#
- 1...Qe6
- 2.Sc2#
- 1...Qc8
- 2.Bxe5#
- 1...Rd6
- 2.Sc2#
- 1...Ra7
- 2.Sc2#
- 2.Bxa7#
- 2.Qxd5#
- 2.Qxa7#
- 1...Rb7
- 2.Sc2#
- 2.Qxd5#
- 1...Rc7
- 2.Qxd5#
- 1...Re7
- 2.Sc2#
- 2.Qxd5#
- 1...Rd8
- 2.Sc2#
- 2.Ba7#
- 2.Qa7#
- 1...Se3
- 2.Sc6#
- 1...axb4!
- threat
- 1.Qg6?
- threat
- 2.Sc2#
- 2.Sc6#
- 1...Qxg6
- 2.Bxe5#
- 1...Rxg6
- 2.Sc2#
- 1...Bxg6
- 2.Sc6#
- 1...axb4
- 2.Rxb4#
- 1...Se1
- 2.Sc6#
- 1...Qe6
- 2.Sc2#
- 1...Qc8
- 2.Bxe5#
- 1...Rd6
- 2.Sc2#
- 1...Ra7
- 2.Sc2#
- 1...Rb7
- 2.Sc2#
- 1...Re7
- 2.Sc2#
- 1...Rf7
- 2.Sc2#
- 1...Rg7
- 2.Sc2#
- 1...Rd8
- 2.Sc2#
- 1...Se3
- 2.Sc6#
- 1...Rc7!
- threat
- 1.Qxh7?
- threat
- 2.Sc2#
- 2.Qd3#
- 1...Rhxh7
- 2.Sc2#
- 2.Sc6#
- 1...Rdxh7
- 2.Sc2#
- 1...axb4
- 2.Rxb4#
- 2.Qd3#
- 1...Qg6
- 2.Bxe5#
- 1...Qc8
- 2.Bxe5#
- 2.Qd3#
- 1...Rc6
- 2.Sxc6#
- 2.Qd3#
- 1...Rg6
- 2.Sc2#
- 1...Rc7
- 2.Qd3#
- 1...Se3
- 2.Qd3#
- 1...Sf4
- 2.Sc2#
- 1...e4
- 2.Sc2#
- 1...Se1!
- threat
- 1.Rg4+?
- Keys
- 1.Bg6!
- threat
- 2.Sc2#
- 2.Sc6#
- 1...Rxg6
- 2.Sc2#
- 1...Rxf7
- 2.Sc2#
- 1...Bxg6
- 2.Sc6#
- 1...axb4
- 2.Rxb4#
- 1...Se1
- 2.Sc6#
- 1...Qe6
- 2.Sc2#
- 1...Qc8
- 2.Bxe5#
- 1...Rd6
- 2.Sc2#
- 1...Ra7
- 2.Sc2#
- 2.Qxd5#
- 1...Rb7
- 2.Sc2#
- 2.Qxd5#
- 1...Rc7
- 2.Qxd5#
- 1...Re7
- 2.Sc2#
- 2.Qxd5#
- 1...Rd8
- 2.Sc2#
- 1...Se3
- 2.Sc6#
- threat
- 1.Bg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 16
- Sets
- Q(i);N_GUARD,XQ(I)::B(J),XP(e)
- Q(i);N_GUARD::B(J),XP(e)
- R(f);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- R(f);S_CUTB(h)::S(E)
- R(g);N_GUARD::QAR1(I),XP(d)
- B(h);N_GUARD::S(E),XB(h)
- B(h);S_CUTR(f)::S(E)
- B(h);N_GUARD::S(E)
- P(c);OGATE,XS(E)::R(H),XP(c)
- P(e);S_CUTB(h)::S(E)
- Tries
- Try
- R(F);CHECK
- Vars
- B(h);P_SPINB(h)::S(E)
- P(e);P_SPINP(e)::S(E)
- Refutation
- S(a);P_SPINS(a)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(f);XR(F)::S(E)
- R(g);XQ(I)::S(E)
- B(h);XR(F)::S(E)
- P(c);OGATE,XS(E)::R(H),XP(c)
- S(a);::S(E)
- Q(i);::S(E)
- R(g);::S(E)
- R(g);N_GUARD::QAR1(I),XP(d)
- Refutation
- Q(i);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(f);XR(H)::S(E)
- R(g);XQ(I)::S(E)
- B(h);XR(H)::S(E)
- S(a);::S(E)
- Q(i);::S(E)
- Q(i);N_GUARD::B(J),XP(e)
- R(g);::S(E)
- R(g);N_GUARD::QAR1(I),XP(d)
- Refutation
- P(c);XS(E)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(i);N_GUARD,XQ(I)::B(J),XP(e)
- R(f);XQ(I)::S(E)
- B(h);XQ(I)::S(E)
- P(c);OGATE,XS(E)::R(H),XP(c)
- S(a);::S(E)
- Q(i);::S(E)
- Q(i);N_GUARD::B(J),XP(e)
- R(g);::S(E)
- Refutation
- R(g);
- Try
- Q(I);XB(h)
- Threat
- DUALS(2)
- Vars
- R(g);XQ(I)::S(E)
- Q(i);N_GUARD::B(J),XP(e)
- R(f);::S(E)
- R(g);::QAR1(I)
- S(a);::QAR1(I)
- S(a);::S(E)
- P(e);::S(E)
- Refutation
- S(a);
- Try
- Actual
- B(A);
- Threat
- DUALS(2)
- Vars
- R(f);XB(A)::S(E)
- R(g);XQ(I)::S(E)
- B(h);XB(A)::S(E)
- P(c);OGATE,XS(E)::R(H),XP(c)
- S(a);::S(E)
- Q(i);::S(E)
- Q(i);N_GUARD::B(J),XP(e)
- R(g);::S(E)
- R(g);N_GUARD::QAR1(I),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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