MESON Chess Problem Database
Problem Display
PID: 10926 (Kb6/p1B3q1/2R5/4pQ1n/R1PkB2p/1n3p1r/7r/3NNb2 w - - 0 1)
Wilson, Francis Vaux
The Problemist, 1969
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.Qxe5#
- 1...Qf8
- 2.Qxe5#
- 1...Qg1
- 2.Qxe5#
- 1...Qg2
- 2.Qxe5#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qd7
- 2.Qxe5#
- 1...Qf7
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Qg8
- 2.Qxe5#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Re2
- 2.c5#
- 1...Be2
- 2.Sc2#
- 1...Bg2
- 2.Sc2#
- 2.c5#
- 1...Bxc4
- 2.Raxc4#
- 2.Rcxc4#
- 1...Sd2
- 2.Sc2#
- 1...Sc5
- 2.Rd6#
- 1...Sg3
- 2.Sxf3#
- 1...Sf6
- 2.Qxe5#
- 1...f2
- 2.Sc2#
- 1...Qh6
- Tries
- 1.Sd3?
- threat
- 2.Rd6#
- 2.c5#
- 1...Qxc7
- 2.c5#
- 1...Bxc7
- 2.c5#
- 1...Qf6
- 2.c5#
- 1...Qh6
- 2.Qxe5#
- 2.c5#
- 1...Qf8
- 2.Qxe5#
- 2.c5#
- 1...Qg6
- 2.Qxe5#
- 2.c5#
- 1...Qd7
- 2.Qxe5#
- 2.c5#
- 1...Qe7
- 2.c5#
- 1...Qf7
- 2.Qxe5#
- 1...Qg8
- 2.Qxe5#
- 1...Ra2
- 2.Rd6#
- 1...Rc2
- 2.Rd6#
- 1...Sd2
- 2.Rd6#
- 1...Sa5
- 2.Rd6#
- 1...Sc5
- 2.Rd6#
- 1...Sf4
- 2.c5#
- 1...Sf6
- 2.Qxe5#
- 2.c5#
- 1...Bxd3!
- threat
- 1.Bc2?
- threat
- 2.Qe4#
- 1...Rxc2
- 2.Sxc2#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Re2
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc5
- 2.Rd6#
- 1...Sg3
- 2.Sxf3#
- 1...Sf6
- 2.Qxe5#
- 1...e4
- 2.Rd6#
- 2.Qxe4#
- 2.Qd5#
- 1...Sd2!
- threat
- 1.Bd3?
- threat
- 2.Qe4#
- 1...Bxd3
- 2.Qxd3#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Sd2
- 2.Sc2#
- 1...Sc5
- 2.Rd6#
- 1...Sg3
- 2.Sxf3#
- 1...Sf6
- 2.Qxe5#
- 1...e4
- 2.Rd6#
- 2.Qxe4#
- 2.Qd5#
- 2.c5#
- 1...Re2!
- threat
- 1.Bxf3?
- threat
- 2.Qe4#
- 1...Rxf3
- 2.Sxf3#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Re2
- 2.Qd3#
- 2.c5#
- 1...Bd3
- 2.Qxd3#
- 1...Sd2
- 2.Sc2#
- 1...Sc5
- 2.Rd6#
- 1...Sf6
- 2.Qxe5#
- 1...e4
- 2.Rd6#
- 2.Qxe4#
- 2.Qd5#
- 1...Sg3!
- threat
- 1.Bd5?
- threat
- 2.Qe4#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Re2
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sd2
- 2.Sc2#
- 1...Sg3
- 2.Sxf3#
- 1...Sf6
- 2.Qxe5#
- 1...e4
- 2.Qxe4#
- 1...Sc5!
- threat
- 1.Bb6+?
- 1...Sc5
- 2.Bxc5#
- 1...axb6!
- 1...Sc5
- 1.Sd3?
- Keys
- 1.Bb1!
- threat
- 2.Qe4#
- 1...Qg4
- 2.Qxe5#
- 1...Qg6
- 2.Qxe5#
- 1...Qh7
- 2.Qxe5#
- 1...Rc2
- 2.Sxc2#
- 1...Re2
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sd2
- 2.Sc2#
- 1...Sc5
- 2.Rd6#
- 1...Sg3
- 2.Sxf3#
- 1...Sf6
- 2.Qxe5#
- 1...e4
- 2.Rd6#
- 2.Qxe4#
- 2.Qd5#
- threat
- 1.Bb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(k);N_GUARD::QAB1(F),XP(h)
- R(b);N_GUARD::S(B)
- R(b);N_GUARD::S(B),XR(b)
- R(b);S_CUTB(a)::R(C)+P(D)
- B(a);S_CUTR(b)::S(B)
- S(c);S_CUTR(b)::S(B)
- S(c);SBLOCK::R(G)
- S(i);S_CUTR(e)::S(B),XP(d)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
- P(d);S_CUTR(b)::S(B)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(k);XB(H)::R(C)+P(D)
- B(l);XB(H)::R(C)+P(D)
- Q(k);::R(C)+P(D)
- Q(k);N_GUARD::QAB1(F),XP(h)
- R(b);::R(G)
- S(c);::R(G)
- S(i);::R(C)+P(D)
- Refutation
- B(a);XS(B)
- Try
- B(E);
- Threat
- QAR1(F)
- Vars
- R(b);XB(E)::S(B),XR(b)
- Q(k);N_GUARD::QAB1(F),XP(h)
- R(b);S_CUTB(a)::QAR1(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(c);SBLOCK::R(G)
- S(i);S_CUTR(e)::S(B),XP(d)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
- Refutation
- S(c);
- Try
- B(E);
- Threat
- QAR1(F)
- Vars
- B(a);OGATE,XB(E)::QAR1(F),XB(a)
- Q(k);N_GUARD::QAB1(F),XP(h)
- S(c);S_CUTR(b)::S(B)
- S(c);SBLOCK::R(G)
- S(i);S_CUTR(e)::S(B),XP(d)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
- Refutation
- R(b);
- Try
- B(E);XP(d)
- Threat
- QAR1(F)
- Vars
- R(e);XB(E)::S(B),XR(e)
- Q(k);N_GUARD::QAB1(F),XP(h)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(c);S_CUTR(b)::S(B)
- S(c);SBLOCK::R(G)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
- Refutation
- S(i);
- Try
- B(E);
- Threat
- QAR1(F)
- Vars
- Q(k);N_GUARD::QAB1(F),XP(h)
- R(b);S_CUTB(a)::QAR1(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(c);S_CUTR(b)::S(B)
- S(i);S_CUTR(e)::S(B),XP(d)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
- P(h);::QAR1(F),XP(h)
- Refutation
- S(c);
- Try
- B(H);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::B(H),XS(c)
- Refutation
- P(j);XB(H)
- Try
- Actual
- B(E);
- Threat
- QAR1(F)
- Vars
- Q(k);N_GUARD::QAB1(F),XP(h)
- R(b);N_GUARD::S(B),XR(b)
- R(b);S_CUTB(a)::QAR1(F)
- B(a);N_GUARD::QAR1(F),XB(a)
- S(c);S_CUTR(b)::S(B)
- S(c);SBLOCK::R(G)
- S(i);S_CUTR(e)::S(B),XP(d)
- S(i);S_CUTQ(k)::QAB1(F),XP(h)
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).