MESON Chess Problem Database
Problem Display
PID: 78348 (1q2R3/8/4p2K/2PBPkp1/6N1/1nQ1p1PP/4N3/1b3n2 w - - 0 1)
Perry, William E
Bridlington Free Press, 1902
(First published on Fri May 16 1902)
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qxe5#
- 1...Qb4
- 2.Rf8#
- 1...Qb5
- 2.Rf8#
- 1...Qb6
- 2.Rf8#
- 1...Ba2
- 2.Qc2#
- 2.Qd3#
- 1...Bc2
- 2.Qxc2#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Bxe6#
- 1...Sfd2
- 2.Sxe3#
- 1...Sh2
- 2.Sxe3#
- 1...Sxg3
- 2.Sxe3#
- 1...Sa1
- 2.Sd4#
- 1...Sc1
- 2.Sd4#
- 1...Sbd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Sxc5
- 2.Sd4#
- 1...Qxe5
- Tries
- 1.Qb2?
- threat
- 2.Qxb1#
- 1...Qxe5
- 2.Qxe5#
- 1...Sxg3
- 2.Sxe3#
- 1...Sxc5
- 2.Sd4#
- 1...Qb4
- 2.Rf8#
- 1...Qb5
- 2.Rf8#
- 1...Ba2
- 2.Qc2#
- 1...Bc2
- 2.Qxc2#
- 1...Be4
- 2.Bxe6#
- 1...Sfd2
- 2.Sxe3#
- 1...Sa1
- 2.Sd4#
- 1...Sc1
- 2.Sd4#
- 1...Sbd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- 1...Bd3!
- threat
- 1.Qxe3?
- threat
- 2.Bxe6#
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...Qxe5
- 2.Qxg5#
- 2.Qxe5#
- 1...Qxe8
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...Sxc5
- 2.Sd4#
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...exd5
- 2.Qf3#
- 1...Qd6
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...Qb4
- 2.Bxe6#
- 2.Rf8#
- 2.Qxg5#
- 1...Qb6
- 2.Rf8#
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...Qc8
- 2.Qf2#
- 2.Qxg5#
- 2.Qf3#
- 1...Qd8
- 2.Bxe6#
- 2.Qf2#
- 2.Qf3#
- 1...Be4
- 2.Bxe4#
- 2.Bxe6#
- 2.Qxg5#
- 2.Qxe4#
- 1...Sfd2
- 2.Bxe6#
- 2.Qxg5#
- 1...Sh2
- 2.Bxe6#
- 2.Qxg5#
- 1...Sbd2
- 2.Sd4#
- 2.Bxe6#
- 2.Qxg5#
- 1...Sd4
- 2.Sxd4#
- 2.Qxg5#
- 1...Sxe3!
- threat
- 1.Qb2?
- Keys
- 1.Qa1!
- threat
- 2.Qxb1#
- 1...Qxe5
- 2.Qxe5#
- 1...Sxg3
- 2.Sxe3#
- 1...Sxa1
- 2.Sd4#
- 1...Sxc5
- 2.Sd4#
- 1...Qb4
- 2.Rf8#
- 1...Qb5
- 2.Rf8#
- 1...Ba2
- 2.Qxf1#
- 1...Bc2
- 2.Qxf1#
- 1...Bd3
- 2.Qxf1#
- 1...Be4
- 2.Bxe6#
- 1...Sfd2
- 2.Sxe3#
- 1...Sc1
- 2.Sd4#
- 1...Sbd2
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sa5
- 2.Sd4#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(h);OGATE,XP(H)::QAR1(B),XQ(h)
- Q(h);N_GUARD::R(J)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);SBLOCK::B(G),XP(g)
- S(b);N_GUARD::S(E),XP(d)
- S(b);N_GUARD,XP(C)::S(E),XP(d)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD,XP(F)::S(A)
- Tries
- Try
- Q(B);
- Threat
- QAB(B),XB(a)
- Vars
- Q(h);OGATE,XP(H)::QAR1(B),XQ(h)
- S(b);N_GUARD,XP(C)::S(E),XP(d)
- S(c);N_GUARD,XP(F)::S(A)
- Q(h);N_GUARD::R(J)
- B(a);N_GUARD::QAB(B)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);SBLOCK::B(G),XP(g)
- S(b);N_GUARD::S(E),XP(d)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- Refutation
- B(a);
- Try
- Q(B);XP(d)
- Threat
- DUALS(4)
- Vars
- P(g);XB(G)::QAR2(B)
- Refutation
- S(b);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAB(B),XB(a)
- Vars
- Q(h);OGATE,XP(H)::QAR1(B),XQ(h)
- S(b);N_GUARD,XP(C)::S(E),XP(d)
- S(c);N_GUARD,XQ(B)::S(A)
- S(c);N_GUARD,XP(F)::S(A)
- Q(h);N_GUARD::R(J)
- B(a);OGATE::QAR(B),XS(b)
- B(a);SBLOCK::B(G),XP(g)
- S(b);N_GUARD::S(E),XP(d)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
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).