MESON Chess Problem Database
Problem Display
PID: 205015 (1q6/4P3/2P1p2B/p7/pkN2NR1/p2B1p2/1nK2Q2/1R5b w - - 0 1)
Barry, Henry William
American Chess Bulletin, 1918
#2
10 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Qb6#
- 1...Qd6
- 2.Qb6#
- 1...Qb6
- 2.Qxb6#
- 1...Qa8
- 2.Qb6#
- 1...Qc8
- 2.Qb6#
- 1...Qe8
- 2.Qb6#
- 1...Qf8
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 1...Qh8
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...Qxf4
- Tries
- 1.Sd2?
- threat
- 2.Sd5#
- 2.Qd4#
- 1...Qxf4
- 2.Rxf4#
- 2.Qb6#
- 1...Qe5
- 2.Sd5#
- 1...Qd6
- 2.Sd5#
- 2.Qb6#
- 1...Qa7
- 2.Sd5#
- 1...Qb5
- 2.Sd5#
- 1...Qb6
- 2.Sd5#
- 2.Qxb6#
- 1...Qd8
- 2.Sd5#
- 1...Qh8
- 2.Sd5#
- 2.Qb6#
- 1...e5
- 2.Sd5#
- 1...a2!
- threat
- 1.Se5?
- threat
- 2.Se2#
- 2.Sg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sxe6#
- 2.Sfg6#
- 2.Qd4#
- 1...Qxe5
- 2.Sd5#
- 1...Qd6
- 2.Sd5#
- 2.Qb6#
- 1...Qa7
- 2.Sd5#
- 1...Qb5
- 2.Sd5#
- 1...Qb6
- 2.Sd5#
- 2.Qxb6#
- 1...Qd8
- 2.Sd5#
- 1...Qf8
- 2.Sd5#
- 2.Qd4#
- 2.Qb6#
- 2.exf8Q#
- 2.exf8B#
- 1...Qg8
- 2.Sd5#
- 2.Sfg6#
- 2.Qd4#
- 2.Qb6#
- 1...Bg2
- 2.Se2#
- 2.Sxg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sxe6#
- 2.Sfg6#
- 2.Qd4#
- 1...a2!
- threat
- 1.Sb6?
- threat
- 2.Sfd5#
- 2.Qd4#
- 1...Qxf4
- 2.Rxf4#
- 1...Qxb6
- 2.Sd5#
- 2.Qxb6#
- 1...Qe5
- 2.Sfd5#
- 1...Qd6
- 2.Sfd5#
- 1...Qd8
- 2.Sfd5#
- 1...Qh8
- 2.Sfd5#
- 1...e5
- 2.Sfd5#
- 2.Sbd5#
- 1...a2!
- threat
- 1.Sd6?
- threat
- 2.Se2#
- 2.Sg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sxe6#
- 2.Sg6#
- 2.Qd4#
- 1...Qxd6
- 2.Sd5#
- 2.Qb6#
- 1...Qa7
- 2.Sd5#
- 1...Qb5
- 2.Sd5#
- 1...Qb6
- 2.Sd5#
- 2.Qxb6#
- 1...Qf8
- 2.Sd5#
- 2.Qd4#
- 2.Qb6#
- 1...Qg8
- 2.Sd5#
- 2.Sg6#
- 2.Qd4#
- 2.Qb6#
- 1...Qh8
- 2.Sd5#
- 2.Qb6#
- 1...Bg2
- 2.Se2#
- 2.Sxg2#
- 2.Sh3#
- 2.Sd5#
- 2.Sh5#
- 2.Sxe6#
- 2.Sg6#
- 2.Qd4#
- 1...e5
- 2.Sd5#
- 1...a2!
- threat
- 1.Se2?
- threat
- 2.Se5#
- 2.Sd6#
- 1...Kb5
- 2.Se5#
- 1...Qh2
- 2.Qb6#
- 1...Qg3
- 2.Qb6#
- 1...Qf4
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qf8
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 1...Qh8
- 2.Se5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Sxe5#
- 1...fxe2!
- threat
- 1.Sh3?
- threat
- 2.Se5#
- 2.Sd6#
- 1...Kb5
- 2.Se5#
- 1...Qg3
- 2.Qb6#
- 1...Qf4
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qf8
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 1...Qh8
- 2.Se5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Sxe5#
- 1...Qh2!
- threat
- 1.Sd5+?
- 1...Kb5
- 2.Se5#
- 1...exd5!
- 1...Kb5
- 1.Sh5?
- threat
- 2.Se5#
- 2.Sd6#
- 1...Kb5
- 2.Se5#
- 1...Qg3
- 2.Qb6#
- 1...Qf4
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qf8
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 1...Qh8
- 2.Se5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Sxe5#
- 1...Qh2!
- threat
- 1.Sxe6?
- threat
- 2.Se5#
- 2.Sd6#
- 2.Qc5#
- 1...Kb5
- 2.Se5#
- 1...Qg3
- 2.Qc5#
- 2.Qb6#
- 1...Qf4
- 2.Qc5#
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 2.Qe1#
- 2.Qd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 2.Qc5#
- 1...Qf8
- 2.Qc5#
- 2.Qb6#
- 1...Qg8
- 2.Qc5#
- 2.Qb6#
- 1...Qh8
- 2.Se5#
- 2.Qc5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 2.Qc5#
- 1...Qh2!
- threat
- 1.Sg6?
- threat
- 2.Sce5#
- 2.Sd6#
- 1...Kb5
- 2.Sce5#
- 1...Qg3
- 2.Qb6#
- 1...Qf4
- 2.Qb6#
- 1...Qe5
- 2.Scxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qf8
- 2.Qb6#
- 1...Qh8
- 2.Sce5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Scxe5#
- 1...Qh2!
- threat
- 1.Qd4?
- threat
- 2.Sxb2#
- 2.Sd2#
- 2.Se3#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Kb5
- 2.Se5#
- 1...Qxf4
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qh8
- 2.Se5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Sxe5#
- 1...Qb5!
- threat
- 1.Sd2?
- Keys
- 1.Sg2!
- threat
- 2.Se5#
- 2.Sd6#
- 1...Kb5
- 2.Se5#
- 1...Qh2
- 2.Qb6#
- 1...Qg3
- 2.Qb6#
- 1...Qf4
- 2.Qb6#
- 1...Qe5
- 2.Sxe5#
- 1...Qd6
- 2.Sxd6#
- 2.Qb6#
- 1...Qa7
- 2.Sb6#
- 1...Qb5
- 2.Bd2#
- 1...Qb6
- 2.Sxb6#
- 2.Qxb6#
- 1...Qd8
- 2.Sd6#
- 1...Qf8
- 2.Qb6#
- 1...Qg8
- 2.Qb6#
- 1...Qh8
- 2.Se5#
- 2.Qb6#
- 1...a2
- 2.Rxb2#
- 1...e5
- 2.Sxe5#
- threat
- 1.Sg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 6
- Sets
- Q(i);N_GUARD,XS(F)::QAR2(C)
- Q(i);N_GUARD::QAR2(C)
- Q(i);N_GUARD::QAR2(C),XQ(i)
- P(c);N_GUARD::R(A),XS(b)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);::R(G)+S(F),DCHECK
- P(h);::R(G)+S(F),DCHECK
- Refutation
- P(c);
- Try
- S(E);
- Threat
- DUALS(8)
- Vars
- Q(i);XS(E)::R(G)+S(F),DCHECK
- Q(i);::R(G)+S(F),DCHECK
- Refutation
- P(c);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(i);OGATE,P_SPINQ(i),XS(F)::R(G),XQ(i)
- Q(i);::R(G)+S(F),DCHECK
- Refutation
- P(c);
- Try
- S(E);
- Threat
- DUALS(8)
- Vars
- Q(i);::R(G)+S(F),DCHECK
- P(h);::R(G)+S(F),DCHECK
- Refutation
- P(c);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD::QAR2(C)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Q(i);SBLOCK::B(I)
- Q(i);::R(G)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::R(G)+S(E),XP(h)
- Refutation
- P(d);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD::QAR2(C)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Q(i);SBLOCK::B(I)
- Q(i);::R(G)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::R(G)+S(E),XP(h)
- Refutation
- Q(i);P_PINQ(C)
- Try
- S(F);CHECK
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Refutation
- P(h);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD::QAR2(C)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Q(i);SBLOCK::B(I)
- Q(i);::R(G)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::R(G)+S(E),XP(h)
- Refutation
- Q(i);P_PINQ(C)
- Try
- S(F);XP(h)
- Threat
- DUALS(3)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Refutation
- Q(i);P_PINQ(C)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD::QAR2(C)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Q(i);SBLOCK::B(I)
- Q(i);::R(G)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::R(G)+S(E),XP(h)
- Refutation
- Q(i);P_PINQ(C)
- Try
- Q(C);
- Threat
- DUALS(6)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD,XS(F)::QAR2(C)
- Q(i);::QAR(C)+S(E),XQ(i)
- Q(i);::QAR(C)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::QAR(C)+S(E),XP(h)
- Refutation
- Q(i);
- Try
- Actual
- S(F);
- Threat
- DUALS(2)
- Vars
- K(f);P-FLIGHT::B(D)+S(E)
- Q(i);N_GUARD::QAR2(C)
- Q(i);::R(G)+S(E),XQ(i)
- Q(i);N_GUARD::R(G)+S(E)
- Q(i);SBLOCK::B(I)
- Q(i);::R(G)+S(E)
- P(c);N_GUARD::R(A),XS(b)
- P(h);::R(G)+S(E),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).