MESON Chess Problem Database
Problem Display
PID: 72825 (Q4q1b/1r6/1p1np2n/P5RB/2N1k1b1/4Pp2/1B3K2/rN1R4 w - - 0 1)
Martin, Godefroy Jose
L'Echiquier de Paris, 1955
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qg7
- 2.Sxd6#
- 1...Qf5
- 2.Sxd6#
- 1...Qf6
- 2.Sxd6#
- 1...Qf7
- 2.Sxd6#
- 1...Qxa8
- 2.Sxd6#
- 1...Qc8
- 2.Sxd6#
- 1...Qe8
- 2.Sxd6#
- 1...Qg8
- 2.Sxd6#
- 1...Bf5
- 2.Bxf3#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.Rxd4#
- 1...Be5
- 2.Rxe5#
- 1...Sxc4
- 2.Qxb7#
- 1...Sb5
- 2.Qxb7#
- 1...Sdf5
- 2.Qxb7#
- 1...Sdf7
- 2.Qxb7#
- 1...Sc8
- 2.Qxb7#
- 1...Se8
- 2.Qxb7#
- 1...Shf5
- 2.Rxg4#
- 1...e5
- 2.Sc3#
- 1...Qg7
- Tries
- 1.Se5?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Rxb1
- 2.Rd4#
- 1...Bxe5
- 2.Rxe5#
- 1...Qc8
- 2.Rd4#
- 1...Ra3
- 2.Rd4#
- 1...Ra4
- 2.Sc3#
- 1...Bf5
- 2.Bxf3#
- 1...Sb5
- 2.Qxb7#
- 1...Sdf5
- 2.Qxb7#
- 1...Shf5
- 2.Rxg4#
- 1...Qf5!
- threat
- 1.Be5?
- threat
- 2.Sc3#
- 2.Rd4#
- 1...Rxb1
- 2.Rd4#
- 1...Bxe5
- 2.Rxe5#
- 1...Ra3
- 2.Rd4#
- 1...Sb5
- 2.Qxb7#
- 1...Sdf5
- 2.Sc3#
- 2.Qxb7#
- 1...Shf5
- 2.Sc3#
- 2.Rxg4#
- 1...Ra2+!
- threat
- 1.Bxh8?
- threat
- 2.Sc3#
- 2.Rd4#
- 2.Re5#
- 1...Qxh8
- 2.Sxd6#
- 1...Rxb1
- 2.Rd4#
- 2.Re5#
- 1...Rxa5
- 2.Sc3#
- 2.Rd4#
- 1...Sxc4
- 2.Sc3#
- 2.Rd4#
- 2.Qxb7#
- 1...Qg7
- 2.Sxd6#
- 1...Qf4
- 2.Sc3#
- 2.Rd4#
- 1...Qf5
- 2.Sc3#
- 2.Sxd6#
- 2.Rd4#
- 1...Qf6
- 2.Sxd6#
- 1...Ra3
- 2.Rd4#
- 2.Re5#
- 1...Bf5
- 2.Sc3#
- 2.Bxf3#
- 2.Rd4#
- 1...Sb5
- 2.Re5#
- 2.Qxb7#
- 1...Sdf5
- 2.Sc3#
- 2.Qxb7#
- 1...Sdf7
- 2.Sc3#
- 2.Rd4#
- 2.Qxb7#
- 1...Shf5
- 2.Sc3#
- 2.Rxg4#
- 1...Shf7
- 2.Sc3#
- 2.Rd4#
- 1...e5
- 2.Sc3#
- 2.Rxe5#
- 1...Ra2+!
- threat
- 1.Bg6+?
- 1...Qf5
- 2.Sxd6#
- 1...Sdf5
- 2.Qxb7#
- 1...Shf5
- 2.Rxg4#
- 1...Bf5!
- 1...Qf5
- 1.Be8?
- threat
- 2.Bc6#
- 1...Qxe8
- 2.Sxd6#
- 1...Sxe8
- 2.Qxb7#
- 1...Qf5
- 2.Sxd6#
- 1...Rxa5!
- threat
- 1.Rxd6?
- threat
- 2.Sbd2#
- 2.Scd2#
- 2.Qxb7#
- 1...Qxa8
- 2.Sbd2#
- 2.Scd2#
- 1...Rxb1
- 2.Sd2#
- 2.Qxb7#
- 1...Rxa5
- 2.Sbd2#
- 2.Scd2#
- 1...Bd4
- 2.Rxd4#
- 1...Qe7
- 2.Sbd2#
- 2.Scd2#
- 1...Qg7
- 2.Sbd2#
- 2.Scd2#
- 1...Qf5
- 2.Sbd2#
- 2.Scd2#
- 1...Qf7
- 2.Sbd2#
- 2.Scd2#
- 1...Qb8
- 2.Sbd2#
- 2.Scd2#
- 1...Qc8
- 2.Sbd2#
- 2.Scd2#
- 1...Qe8
- 2.Sbd2#
- 2.Scd2#
- 1...Bc3
- 2.Sxc3#
- 2.Qxb7#
- 1...Qxd6!
- threat
- 1.Se5?
- Keys
- 1.Qa6!
- threat
- 2.Scd2#
- 1...Sxc4
- 2.Qxb7#
- 1...Qf5
- 2.Sxd6#
- 1...Bf5
- 2.Bxf3#
- 1...Bc3
- 2.Sxc3#
- 1...Be5
- 2.Rxe5#
- 1...Sb5
- 2.Qxb7#
- 1...Sdf5
- 2.Qxb7#
- 1...Shf5
- 2.Rxg4#
- 1...b5
- 2.Qc6#
- 1...e5
- 2.Sc3#
- threat
- 1.Qa6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(j);N_GUARD::S(F),XS(f)
- Q(j);N_GUARD,N_SPINR(i),XQ(J)::S(F),XS(f)
- B(d);OGATE::B(I),XP(b)
- B(k);N_GUARD::S(A),XB(k)
- B(k);N_GUARD,P_PINP(E)::R1(B),XB(k)
- B(k);N_GUARD::R1(H),XB(k)
- S(f);N_GUARD,XS(F)::QAB(J),XR(i)
- S(f);N_GUARD::QAB(J),XR(i)
- S(h);N_GUARD,SBLOCK,S_CUTQ(j)::R(H),XB(d)
- P(g);S_CUTB(k)::S(A)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::R1(B)
- B(k);OGATE,XS(F)::R1(H),XB(k)
- Q(j);::R1(B)
- R(a);::R1(B)
- R(a);::S(A)
- B(d);OGATE::B(I),XP(b)
- S(f);N_GUARD::QAB(J),XR(i)
- S(h);N_GUARD,SBLOCK,S_CUTQ(j)::R(H),XB(d)
- Refutation
- Q(j);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::R1(B)
- B(k);OGATE,XB(C)::R1(H),XB(k)
- R(a);::R1(B)
- S(f);N_GUARD::QAB(J),XR(i)
- Refutation
- R(a);CHECK
- Try
- B(C);XB(k)
- Threat
- DUALS(3)
- Vars
- Q(j);N_GUARD,XB(C)::S(F),XS(f)
- Q(j);N_GUARD::S(F),XS(f)
- Refutation
- R(a);CHECK
- Try
- B(I);CHECK
- Vars
- Q(j);P_SPINQ(j)::S(F),XS(f)
- S(f);P_SPINS(f)::QAB(J),XR(i)
- S(h);P_SPINS(h)::R(H),XB(d)
- Refutation
- B(d);P_SPINB(d)
- Try
- B(I);
- Threat
- B(I)
- Vars
- Q(j);N_GUARD,XB(I)::S(F),XS(f)
- S(f);N_GUARD,XB(I)::QAB(J),XR(i)
- Q(j);N_GUARD::S(F),XS(f)
- Refutation
- R(a);XP(G)
- Try
- R(B);XS(f)
- Threat
- DUALS(3)
- Vars
- B(k);N_GUARD,P_PINP(E)::R1(B),XB(k)
- Refutation
- Q(j);XR(B)
- Try
- Actual
- Q(J);N_PINR(i)
- Threat
- S(F)
- Vars
- S(f);N_GUARD,XS(F)::QAB(J),XR(i)
- Q(j);N_GUARD::S(F),XS(f)
- B(d);OGATE::B(I),XP(b)
- B(k);N_GUARD::S(A),XB(k)
- B(k);N_GUARD::R1(H),XB(k)
- S(f);N_GUARD::QAB(J),XR(i)
- S(h);N_GUARD,SBLOCK,S_CUTQ(j)::R(H),XB(d)
- P(e);OGATE::QAB(J)
- P(g);S_CUTB(k)::S(A)
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).