MESON Chess Problem Database
Problem Display
PID: 18420 (3b3Q/3P2rb/K3P1P1/1NP2n2/2BBkP2/8/5R2/1n3N2 w - - 0 1)
Barron, Philip
Time & Tide, 1955
#2
12 + 6
SOLUTION
- SOUND
- Sets
- 1...Rxg6
- 2.Qe5#
- 1...Rxd7
- 2.Qe5#
- 1...Re7
- 2.Qe5#
- 1...Rf7
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 1...Bxg6
- 2.Qh1#
- 1...Bg8
- 2.Qh1#
- 1...Bh4
- 2.Qa8#
- 1...Ba5
- 2.Qa8#
- 1...Bg5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bf6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Sc3
- 2.Sd2#
- 1...Se3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sxd4
- 2.Sd6#
- 1...Sh4
- 2.Sg3#
- 1...Sd6
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Se7
- 2.Sg3#
- 1...Rxg6
- Tries
- 1.Bxg7?
- 1...Bxg6
- 2.Qh1#
- 1...Se3
- 2.Sg3#
- 2.Sd6#
- 1...Sg3
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Se7
- 2.Sd6#
- 1...Sd2
- 2.Sc3#
- 1...Bg8
- 2.Qh1#
- 1...Bh4
- 2.Qa8#
- 1...Ba5
- 2.Qa8#
- 1...Bg5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bf6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sxg7!
- 1...Bxg6
- 1.Bxg7?
- Keys
- 1.Be3!
- 1...Rxg6
- 2.Qe5#
- 1...Rxd7
- 2.Qe5#
- 1...Bxg6
- 2.Qh1#
- 1...Sxe3
- 2.Sg3#
- 1...Sg3
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sh4
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sh6
- 2.Sd6#
- 1...Se7
- 2.Sd6#
- 1...Sd2
- 2.Sc3#
- 1...Re7
- 2.Qe5#
- 1...Rf7
- 2.Qe5#
- 1...Rg8
- 2.Qe5#
- 1...Bg8
- 2.Qh1#
- 1...Bh4
- 2.Qa8#
- 1...Ba5
- 2.Qa8#
- 1...Bg5
- 2.Qa8#
- 1...Bb6
- 2.Qa8#
- 1...Bf6
- 2.Qa8#
- 1...Bc7
- 2.Qa8#
- 1...Be7
- 2.Qa8#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Rxg6
- 1.Be3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(d);OGATE,P_PINP(I),XP(J)::QAR1(L)
- R(d);OGATE,XP(K)::QAR1(L)
- R(d);OGATE::QAR1(L)
- B(e);OGATE,XP(J)::QAB(L)
- B(e);OGATE::QAB(L)
- B(f);OGATE::QAB(L)
- S(a);N_GUARD::S(A),XS(a)
- S(a);N_GUARD::S(A)
- S(c);N_GUARD::S(A)
- S(c);N_GUARD::S(A),XS(c)
- S(c);N_GUARD,SBLOCK,XB(D)::S(F)
- Tries
- Try
- B(D);XR(d)
- Vars
- B(e);OGATE,XP(J)::QAB(L)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- S(a);N_GUARD::S(F)
- B(e);OGATE::QAB(L)
- B(f);OGATE::QAB(L)
- S(a);N_GUARD::S(F),XS(a)
- Refutation
- S(c);XB(D)
- Try
- Actual
- B(D);
- Vars
- R(d);OGATE,P_PINP(I),XP(J)::QAR1(L)
- R(d);OGATE,XP(K)::QAR1(L)
- B(e);OGATE,XP(J)::QAB(L)
- S(c);N_GUARD,SBLOCK,XB(D)::S(A)
- S(c);N_GUARD::S(F)
- S(c);N_GUARD::S(F),XS(c)
- S(a);N_GUARD::S(F)
- R(d);OGATE::QAR1(L)
- B(e);OGATE::QAB(L)
- B(f);OGATE::QAB(L)
- S(a);N_GUARD::S(F),XS(a)
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).