MESON Chess Problem Database
Problem Display
PID: 3131 (8/1p1Np3/1R6/3k1N2/2p1p3/p7/Kb6/1R1B4 w - - 0 1)
Williams, Philip Hamilton
Source?, 1918
#2
6 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...c3
- 2.Bb3#
- 1...e3
- 2.Bf3#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...Ba1
- Tries
- 1.Bc2?
- 1...c3
- 2.Bb3#
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...e3!
- 1...c3
- 1.Ba4?
- 1...c3
- 2.Bb3#
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...e3!
- 1...c3
- 1.Bg4?
- 1...e3
- 2.Bf3#
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...c3!
- 1...e3
- 1.Bh5?
- 1...e3
- 2.Bf3#
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...e5
- 2.Bf7#
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...c3!
- 1...e3
- 1.R1xb2?
- threat
- 2.Rd2#
- 2.R2b5#
- 1...c3
- 2.Bb3#
- 1...e3
- 2.Bf3#
- 1...axb2!
- threat
- 1.Bc2?
- Keys
- 1.Be2!
- 1...e3
- 2.Bf3#
- 1...Ba1
- 2.R1b5#
- 1...Bc1
- 2.R1b5#
- 1...Bc3
- 2.R1b5#
- 1...Bd4
- 2.Sxe7#
- 1...Be5
- 2.R1b5#
- 1...Bf6
- 2.R1b5#
- 1...Bg7
- 2.R1b5#
- 1...Bh8
- 2.R1b5#
- 1...c3
- 2.Rd1#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...e3
- 1.Be2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(c);OGATEB::B(B)
- P(d);OGATEB::B(B)
- P(g);N_GUARD::R1(E)
- Tries
- Try
- B(B);
- Vars
- P(c);OGATEB::B(B)
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(g);N_GUARD::R1(E)
- Refutation
- P(d);
- Try
- B(B);
- Vars
- P(c);OGATEB::B(B)
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(g);N_GUARD::R1(E)
- Refutation
- P(d);
- Try
- B(B);
- Vars
- P(d);OGATEB::B(B)
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(g);N_GUARD::R1(E)
- Refutation
- P(c);
- Try
- B(B);
- Vars
- P(d);OGATEB::B(B)
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(g);N_GUARD::R1(E)
- Refutation
- P(c);
- Try
- R(A);XB(a)
- Threat
- DUALS(2)
- Vars
- P(c);OGATEB::B(B)
- P(d);OGATEB::B(B)
- Refutation
- P(b);XR(A)
- Try
- Actual
- B(B);
- Vars
- P(d);OGATEB::B(B)
- B(a);OGATE::R(A)
- B(a);SBLOCK::S(D),XP(g)
- P(c);S_CUTB(a)::R(A)
- P(g);N_GUARD::R1(E)
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).