MESON Chess Problem Database
Problem Display
PID: 124394 (n1B2b2/2p2b2/3k2NR/KQ1N4/ppP1p2B/8/6q1/8 w - - 0 1)
Sim, Malcolm
La Presse, 1943
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Bg3#
- 1...Qa2
- 2.Bg3#
- 1...Qc2
- 2.Bg3#
- 1...Qe2
- 2.Bg3#
- 1...Qg3
- 2.Bxg3#
- 1...Qxg6
- 2.Bg3#
- 1...Bxd5
- 2.Qxd5#
- 2.c5#
- 1...Bxh6
- 2.Be7#
- 1...Be7
- 2.Bxe7#
- 1...Bg7
- 2.Be7#
- 1...c5
- 2.Qd7#
- 1...Qh1
- Tries
- 1.Se3?
- threat
- 2.Sf5#
- 2.c5#
- 1...Qxg6
- 2.Sf5#
- 1...Bxc4
- 2.Sxc4#
- 2.Sf5#
- 1...Bxg6
- 2.Sf5#
- 2.Qd5#
- 1...c5
- 2.Qd7#
- 1...c6
- 2.Qe5#
- 1...Qf1
- 2.c5#
- 1...Qf3
- 2.c5#
- 1...Qh3
- 2.c5#
- 1...Qc2
- 2.Sf5#
- 2.Bg3#
- 1...Qf2
- 2.c5#
- 1...Qg4
- 2.c5#
- 1...Be6
- 2.c5#
- 1...Qg5!
- threat
- 1.Sde7?
- threat
- 2.Sf5#
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Qxg6
- 2.Sf5#
- 1...Bxc4
- 2.Sf5#
- 2.Qc6#
- 2.Qe5#
- 1...Bxg6
- 2.Sf5#
- 2.Qd5#
- 1...Bxe7
- 2.Bxe7#
- 1...c5
- 2.Qc6#
- 2.Qd7#
- 1...c6
- 2.Qxc6#
- 2.Qe5#
- 1...Qf1
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Qf3
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Qh3
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Qg1
- 2.Sf5#
- 2.Qc6#
- 2.Qe5#
- 1...Qb2
- 2.Sf5#
- 2.Qc6#
- 2.c5#
- 1...Qc2
- 2.Sf5#
- 2.Bg3#
- 2.Qc6#
- 2.Qe5#
- 1...Qf2
- 2.Qc6#
- 2.Qe5#
- 1...Qh2
- 2.Sf5#
- 2.Qc6#
- 2.c5#
- 1...Qg3
- 2.Sf5#
- 2.Bxg3#
- 2.Qc6#
- 2.c5#
- 1...Qg4
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Bd5
- 2.Sf5#
- 2.Qxd5#
- 2.c5#
- 1...Be6
- 2.Qc6#
- 2.Qe5#
- 2.c5#
- 1...Be8
- 2.Sf5#
- 2.Qd5#
- 2.Qe5#
- 2.c5#
- 1...Bg7
- 2.Sf5#
- 2.Qc6#
- 2.c5#
- 1...e3
- 2.Sf5#
- 2.Qe5#
- 2.c5#
- 1...Qg5!
- threat
- 1.Se5+?
- 1...Qg6
- 2.Sxf7#
- 1...Be6
- 2.Sf7#
- 2.Rxe6#
- 1...Bg6
- 2.Sf7#
- 1...Bxh6
- 2.Sxf7#
- 1...Kxe5!
- 1...Qg6
- 1.Sh8+?
- 1...Qg6
- 2.Sxf7#
- 2.Bg3#
- 1...Be6
- 2.Sf7#
- 2.Rxe6#
- 1...Bg6
- 2.Sf7#
- 1...Bxh6
- 2.Sxf7#
- 1...Ke5!
- 1...Qg6
- 1.Bd7?
- threat
- 2.Qc6#
- 1...Qxg6
- 2.Bg3#
- 1...Bxd5
- 2.Qxd5#
- 2.c5#
- 1...c6
- 2.Qxc6#
- 1...Bxg6!
- threat
- 1.Qxb4+?
- 1...Kc6
- 2.Se5#
- 2.Sge7#
- 1...c5!
- 1...Kc6
- 1.Se3?
- Keys
- 1.Sf6!
- threat
- 2.c5#
- 1...Qxg6
- 2.Sxe4#
- 1...Bxc4
- 2.Se8#
- 1...Bxg6
- 2.Se8#
- 1...c5
- 2.Qd7#
- 1...c6
- 2.Qe5#
- 1...Qg5
- 2.Sxe4#
- 1...Qg1
- 2.Sxe4#
- 1...Qc2
- 2.Bg3#
- 1...Qf2
- 2.Sxe4#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::B(B)
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD,P_SPINQ(a),XS(F)::B(B)
- B(i);N_GUARD,XR(G)::B(B)
- B(i);N_GUARD::B(B),XB(i)
- B(i);N_GUARD::B(B)
- P(f);SBLOCK::QAR1(D)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);P_SPINQ(a),XS(F)::S(E)
- P(f);SBLOCK::QAR1(D)
- P(f);SBLOCK::QAB1(D)
- Q(a);::P(A)
- B(g);::P(A)
- Refutation
- Q(a);P_PINQ(D)
- Try
- S(E);
- Threat
- DUALS(4)
- Vars
- Q(a);P_SPINQ(a),XS(F)::S(E)
- B(i);OGATE,XS(E)::B(B),XB(i)
- Refutation
- Q(a);P_PINQ(D)
- Try
- S(F);CHECK
- Vars
- Q(a);P_SPINQ(a)::S(F),XB(g)
- B(g);P_SPINB(g)::S(F)
- B(i);XR(G)::S(F),XB(g)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- S(F);CHECK
- Vars
- B(g);P_SPINB(g)::S(F)
- B(i);XR(G)::S(F),XB(g)
- Refutation
- K(e);S_FLIGHT
- Try
- B(H);
- Threat
- QAR1(D)
- Vars
- Q(a);N_GUARD,P_SPINQ(a),XS(F)::B(B)
- P(f);::QAR1(D),XP(f)
- Refutation
- B(g);P_SPINB(g),XS(F)
- Try
- Q(D);CHECK,XP(c)
- Refutation
- P(f);P_SPINP(f)
- Try
- Actual
- S(E);
- Threat
- P(A)
- Vars
- Q(a);N_GUARD,XS(F)::S(E),XP(d)
- B(g);N_GUARD,XP(A)::S(E)
- B(g);N_GUARD,XS(F)::S(E)
- P(f);SBLOCK::QAR1(D)
- P(f);SBLOCK::QAB1(D)
- Q(a);N_GUARD,P_PINQ(D)::S(E),XP(d)
- Q(a);N_GUARD::S(E),XP(d)
- Q(a);N_GUARD::B(B)
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).