MESON Chess Problem Database
Problem Display
PID: 58630 (3R2B1/N5K1/2p2N2/1Qp1kp2/n1r2p1R/6P1/4PB2/1q5b w - - 0 1)
Michel, Francois
Het Belgisch Schaakbord (L'Echiquier Belge), 1955
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Qb8#
- 1...Qc2
- 2.Qb8#
- 1...Qe4
- 2.Qb8#
- 1...Qa1
- 2.Qb8#
- 1...Qc1
- 2.Qb8#
- 1...Qe1
- 2.Qb8#
- 1...Qf1
- 2.Qb8#
- 1...Qg1
- 2.Qb8#
- 1...Rc1
- 2.Bd4#
- 2.gxf4#
- 1...Rc2
- 2.Bd4#
- 2.gxf4#
- 1...Rc3
- 2.Bd4#
- 2.gxf4#
- 1...Rd4
- 2.Bxd4#
- 1...Re4
- 2.Sxc6#
- 1...Be4
- 2.gxf4#
- 1...Sb2
- 2.Qb8#
- 1...f3
- 2.Sxc6#
- 1...Qa2
- Tries
- 1.Sg4+?
- 1...Ke4
- 2.Re8#
- 2.Qxc4#
- 2.Qxc6#
- 1...fxg4!
- 1...Ke4
- 1.Sd7+?
- 1...Ke4
- 2.Rxf4#
- 2.Re8#
- 2.Qxc4#
- 2.Qxc6#
- 1...Kd6!
- 1...Ke4
- 1.Bxc4?
- threat
- 2.Bd4#
- 2.gxf4#
- 1...Qxb5
- 2.gxf4#
- 1...fxg3
- 2.Bd4#
- 1...cxb5
- 2.gxf4#
- 1...Qd3
- 2.gxf4#
- 1...Qe4
- 2.Qb8#
- 1...Qa1
- 2.Qb8#
- 2.gxf4#
- 1...Qc1
- 2.Bd4#
- 2.Qb8#
- 1...Qd1
- 2.gxf4#
- 1...Qg1
- 2.Qb8#
- 1...Qb2
- 2.gxf4#
- 1...f3
- 2.Sxc6#
- 2.Bd4#
- 1...Bd5!
- threat
- 1.Qxc4?
- threat
- 2.Qe6#
- 2.Qxf4#
- 2.gxf4#
- 1...fxg3
- 2.Qe6#
- 2.Qf4#
- 1...Bd5
- 2.Qxf4#
- 2.gxf4#
- 1...Qa2
- 2.Qxf4#
- 2.gxf4#
- 1...Qe4
- 2.Qe6#
- 1...Qc1
- 2.Qe6#
- 1...Qg1
- 2.Qe6#
- 2.Qxf4#
- 1...Qb3
- 2.Qxf4#
- 2.gxf4#
- 1...Qb4
- 2.Qe6#
- 2.gxf4#
- 1...Be4
- 2.Qe6#
- 2.gxf4#
- 1...f3
- 2.Sxc6#
- 2.Qe6#
- 2.Qf4#
- 1...Qb7+!
- threat
- 1.Qxc6?
- threat
- 2.Sd7#
- 2.Re8#
- 2.Qe8#
- 2.Qd6#
- 2.Qe6#
- 2.Qc7#
- 1...Bxc6
- 2.Sxc6#
- 1...Bd5
- 2.Rxd5#
- 2.Qxd5#
- 2.Qd6#
- 2.Qc7#
- 1...Qd3
- 2.Re8#
- 2.Qe8#
- 2.Qe6#
- 1...Qd1
- 2.Re8#
- 2.Qe8#
- 2.Qe6#
- 1...Qb5
- 2.Sd7#
- 2.Re8#
- 2.Qd6#
- 2.Qe6#
- 2.Qc7#
- 1...Qb6
- 2.Sd7#
- 2.Re8#
- 1...Qb8
- 2.Sd7#
- 2.Qe8#
- 2.Qe6#
- 1...Rd4
- 2.Re8#
- 2.Qe8#
- 2.Qe6#
- 1...Sb6
- 2.Re8#
- 2.Qe8#
- 2.Qd6#
- 2.Qe6#
- 2.Qc7#
- 1...Qb7+!
- threat
- 1.Qxc5+?
- 1...Rxc5
- 2.Bd4#
- 2.gxf4#
- 1...Bd5
- 2.Sxc6#
- 2.Re8#
- 2.Qd6#
- 1...Sxc5!
- 1...Rxc5
- 1.Qb7?
- threat
- 2.Qc7#
- 2.Qe7#
- 1...Bd5
- 2.Qc7#
- 1...Qd3
- 2.Qe7#
- 1...Qd1
- 2.Qe7#
- 1...Qb6
- 2.Qe7#
- 1...Rd4
- 2.Qe7#
- 1...Qxb7+!
- threat
- 1.e4?
- threat
- 2.Sxc6#
- 2.gxf4#
- 1...Qxe4
- 2.Qb8#
- 1...Qxb5
- 2.gxf4#
- 1...Rxe4
- 2.Sxc6#
- 1...Bxe4
- 2.gxf4#
- 1...fxg3
- 2.Sxc6#
- 1...fxe4
- 2.Rh5#
- 1...cxb5
- 2.Sc6#
- 2.Rd5#
- 2.gxf4#
- 1...Qc1
- 2.Sxc6#
- 2.Qb8#
- 1...Qg1
- 2.Sxc6#
- 2.Qb8#
- 1...f3
- 2.Sxc6#
- 1...fxe4 ep!
- threat
- 1.Sg4+?
- Keys
- 1.Se4!
- threat
- 2.Re8#
- 1...Kxe4
- 2.Re8#
- 1...Qxe4
- 2.Qb8#
- 1...Rxe4
- 2.Sxc6#
- 1...Bxe4
- 2.gxf4#
- 1...fxe4
- 2.Rh5#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::QAB(E)
- Q(a);N_GUARD,P_PINP(C)::QAB(E)
- R(d);N_GUARD::B(B),XR(d)
- R(d);S_CUTB(b)::S(G),XP(i)
- B(b);S_CUTR(d)::P(C),XP(e)
- S(c);S_CUTQ(a)::QAB(E)
- P(e);S_CUTB(b)::S(G),XP(i)
- Tries
- Try
- S(F);CHECK
- Refutation
- P(h);XS(F)
- Try
- S(F);CHECK
- Refutation
- K(g);N_SPINP(f),S_FLIGHT
- Try
- B(J);XR(d)
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINP(f),XQ(E)::P(C),XP(e)
- P(e);XP(C)::B(B)
- P(i);N_SPINP(f),XQ(E)::P(C),XP(e)
- Q(a);::P(C),XP(e)
- Q(a);N_GUARD::QAB(E)
- Q(a);N_GUARD,P_PINP(C)::QAB(E)
- Refutation
- B(b);N_SPINP(f)
- Try
- Q(E);N_PINP(f),XR(d)
- Threat
- DUALS(3)
- Vars
- Q(a);::QAR1(E)
- Refutation
- Q(a);CHECK
- Try
- Q(E);N_PINP(f),XP(i)
- Threat
- DUALS(6)
- Vars
- B(b);XQ(E)::S(G),XB(b)
- Refutation
- Q(a);CHECK
- Try
- Q(E);CHECK,XP(f)
- Refutation
- S(c);XQ(E)
- Try
- Q(E);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- B(b);::QAB(E)
- Q(a);::QAR2(E)
- R(d);::QAR2(E)
- Refutation
- Q(a);CHECK,XQ(E)
- Try
- P(A);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XP(A)::QAB(E)
- Q(a);N_SPINP(f),XQ(E)::P(C),XP(e)
- R(d);XP(A)::S(G),XP(i)
- B(b);XP(A)::P(C),XP(e)
- P(e);XP(C)::S(G),XP(i)
- P(h);OGATEB,XP(A)::R(D)
- P(e);::S(G),XP(i)
- Refutation
- P(e);EP,XP(A)
- Try
- Actual
- S(F);
- Threat
- R(I)
- Vars
- K(g);N_SPINP(f),P-FLIGHT,P_SPINP(e),XS(F)::R(I)
- Q(a);N_GUARD,SBLOCK,XS(F)::QAB(E)
- R(d);SBLOCK,XS(F)::S(G),XP(i)
- B(b);SBLOCK,XS(F)::P(C),XP(e)
- P(h);OGATEB,SBLOCK,XS(F)::R(D)
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).