MESON Chess Problem Database
Problem Display
PID: 3136 (8/5N1n/4p3/2Bp4/4k2K/2r1p2N/1QP1n3/5R2 w - - 0 1)
Campbell, AWD
Source?, 1919
#2
7 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2
- 2.Qxc2#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Rxc5
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...d4
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...Rxc2
- Tries
- 1.Kg4?
- 1...Rxc2
- 2.Qxc2#
- 1...Rxc5
- 2.Sd6#
- 2.Qe5#
- 1...d4
- 2.Qb7#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...Sf6+!
- 1...Rxc2
- 1.Sfg5+?
- 1...Ke5
- 2.Qb8#
- 1...Sxg5!
- 1...Ke5
- 1.Bb6?
- 1...Rxc2
- 2.Qxc2#
- 1...Sf4
- 2.Rxf4#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Rc5
- 2.Sd6#
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rc7
- 2.Sd6#
- 2.Qe5#
- 1...Rc8
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...d4!
- 1...Rxc2
- 1.Ba7?
- 1...Rxc2
- 2.Qxc2#
- 1...Sf4
- 2.Rxf4#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Rc5
- 2.Sd6#
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 1...Rc7
- 2.Sd6#
- 2.Qe5#
- 1...Rc8
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...d4!
- 1...Rxc2
- 1.Rf2?
- 1...Rxc2
- 2.Qxc2#
- 1...Rxc5
- 2.Sd6#
- 2.Qe5#
- 1...Sf4
- 2.Rxf4#
- 1...d4
- 2.Qb7#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...exf2!
- 1...Rxc2
- 1.Rf6?
- 1...Rxc2
- 2.Qxc2#
- 1...Rxc5
- 2.Sd6#
- 2.Qe5#
- 1...Sf4
- 2.Rxf4#
- 1...d4
- 2.Qb7#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...Sxf6!
- 1...Rxc2
- 1.Qa1?
- 1...Rxc5
- 2.Sd6#
- 2.Qe5#
- 1...Sf4
- 2.Rxf4#
- 1...d4
- 2.Qa8#
- 1...Ra3
- 2.Sd6#
- 2.Qe5#
- 1...Rb3
- 2.Sd6#
- 2.Qe5#
- 1...Rd3
- 2.Sd6#
- 2.Qe5#
- 1...Rc4
- 2.Sd6#
- 2.Qe5#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...Rxc2!
- 1...Rxc5
- 1.Qxc3?
- threat
- 2.Sd6#
- 2.Qe5#
- 2.Qd3#
- 2.Qxe3#
- 1...Sxc3
- 2.Rf4#
- 1...Sf4
- 2.Sd6#
- 2.Rxf4#
- 2.Qe5#
- 1...Sc1
- 2.Sd6#
- 2.Rf4#
- 2.Qd4#
- 2.Qe5#
- 2.Qxe3#
- 1...Sd4
- 2.Rf4#
- 2.Qxd4#
- 2.Qd3#
- 1...e5
- 2.Sd6#
- 2.Qxe5#
- 2.Qd3#
- 2.Qxe3#
- 1...d4!
- threat
- 1.Qb3?
- 1...Rxc2
- 2.Qxc2#
- 2.Qxe3#
- 1...Rxc5
- 2.Qd3#
- 1...Sf4
- 2.Rxf4#
- 1...Rd3
- 2.Qxd3#
- 2.cxd3#
- 1...Rc4
- 2.Qd3#
- 2.Qxe3#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...d4
- 2.Qxe6#
- 2.Qb7#
- 1...e5
- 2.Sd6#
- 1...Rxb3!
- 1...Rxc2
- 1.Qb4+?
- 1...Sd4
- 2.Rf4#
- 2.Qxd4#
- 1...d4
- 2.Qb7#
- 1...Rc4!
- 1...Sd4
- 1.Qb8?
- threat
- 2.Qe5#
- 1...e5
- 2.Sd6#
- 2.Qxe5#
- 1...Rxc2!
- threat
- 1.Kg4?
- Keys
- 1.Qb1!
- 1...Rxc2
- 2.Qxc2#
- 1...Rxc5
- 2.c3#
- 1...Sf4
- 2.Rxf4#
- 1...d4
- 2.Qb7#
- 1...Ra3
- 2.c3#
- 1...Rb3
- 2.cxb3#
- 1...Rd3
- 2.cxd3#
- 1...Rc4
- 2.c3#
- 1...Sc1
- 2.Rf4#
- 1...Sg1
- 2.Rf4#
- 1...Sg3
- 2.Rf4#
- 1...Sd4
- 2.Rf4#
- 1...Sg5
- 2.Shxg5#
- 1...Sf6
- 2.Shg5#
- 1...Sf8
- 2.Shg5#
- 1...e5
- 2.Sd6#
- 1...Rxc2
- 1.Qb1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(e);OGATEB::QAB(B)
- P(f);SBLOCK::S(G)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- P(e);OGATEB::QAB(B)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD::R1(A),XS(a)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- S(g);CHECK
- Try
- S(G);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINR(b)::QAB(B)
- Refutation
- S(g);XS(G)
- Try
- B(F);
- Vars
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- S(a);N_GUARD::R1(A),XS(a)
- R(b);OGATE::QAR1(B)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- P(e);
- Try
- B(F);
- Vars
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- S(a);N_GUARD::R1(A),XS(a)
- R(b);OGATE::QAR1(B)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- P(e);
- Try
- R(A);
- Vars
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- S(a);N_GUARD::R1(A),XS(a)
- P(e);OGATEB::QAB(B)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- P(c);XR(A)
- Try
- R(A);
- Vars
- R(b);OGATE,XP(C)::QAB(B),XR(b)
- S(a);N_GUARD::R1(A),XS(a)
- P(e);OGATEB::QAB(B)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- S(g);XR(A)
- Try
- Q(B);
- Vars
- S(a);N_GUARD::R1(A),XS(a)
- P(e);OGATEB::QAB(B)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- R(b);XP(C)
- Try
- Q(B);XR(b)
- Threat
- DUALS(4)
- Vars
- S(a);N_GUARD,XQ(B)::R1(A)
- Refutation
- P(e);
- Try
- Q(B);
- Vars
- R(b);OGATE,XB(F)::QAB1(B)
- S(a);N_GUARD::R1(A),XS(a)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
- Refutation
- R(b);XQ(B)
- Try
- Q(B);CHECK
- Vars
- P(e);OGATEB,P_SPINP(e)::QAB(B)
- Refutation
- R(b);P_SPINR(b)
- Try
- Q(B);
- Threat
- QAR1(B)
- Refutation
- R(b);XP(C)
- Try
- Actual
- Q(B);
- Vars
- R(b);OGATE,P_SPINR(b),XP(C)::QAB(B),XR(b)
- R(b);OGATE,XB(F)::QAB(B)+P(C)
- S(a);N_GUARD::R1(A),XS(a)
- P(e);OGATEB::QAB(B)
- R(b);OGATE::QAB(B)+P(C)
- R(b);OGATE::QAB(B)+P(C),XR(b)
- R(b);OGATE::P(C),XR(b)
- S(a);N_GUARD::R1(A)
- S(g);N_GUARD::S(D),XS(g)
- S(g);N_GUARD::S(D)
- P(f);SBLOCK::S(G)
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).