MESON Chess Problem Database
Problem Display
PID: 51126 (3N4/2ppQ1p1/p4pBn/R6P/2p1Nk1b/2K1p1nP/4P2B/8 w - - 0 1)
Clark, Cecil Henry Douglas
Manchester Guardian, 1950
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6
- 2.Se6#
- 1...Bg5
- Tries
- 1.Kb2?
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6
- 2.Se6#
- 1...c3+!
- 1...Bg5
- 1.Kc2?
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6
- 2.Se6#
- 1...c3!
- 1...Bg5
- 1.Kxc4?
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d6
- 2.Se6#
- 1...d5+!
- 1...Bg5
- 1.Sxf6?
- threat
- 2.Sd5#
- 2.Qe4#
- 2.Qe5#
- 1...gxf6
- 2.Qe4#
- 1...Sf5
- 2.Sd5#
- 2.Rxf5#
- 1...c5
- 2.Sd5#
- 1...d5
- 2.Sxd5#
- 1...Sg4
- 2.Sd5#
- 2.Rf5#
- 2.Qe4#
- 1...Sf7
- 2.Sd5#
- 2.Rf5#
- 2.Qe4#
- 1...c6
- 2.Qd6#
- 2.Qe4#
- 2.Qe5#
- 1...d6
- 2.Sd5#
- 2.Se6#
- 2.Qe4#
- 1...Bxf6+!
- threat
- 1.Sc6?
- 1...dxc6
- 2.Qxc7#
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...d5
- 2.Qxc7#
- 1...d6!
- 1...dxc6
- 1.Sb7?
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6!
- 1...Bg5
- 1.Sf7?
- 1...Sxf7
- 2.Rf5#
- 1...Bg5
- 2.Bxg3#
- 1...Sg4
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6!
- 1...Sxf7
- 1.Rc5?
- 1...Sg4
- 2.Rf5#
- 1...Bg5
- 2.Bxg3#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c6
- 2.Qd6#
- 1...d5
- 2.Qxc7#
- 1...d6
- 2.Se6#
- 1...a5!
- 1...Sg4
- 1.Rd5?
- 1...Sg4
- 2.Rf5#
- 1...Bg5
- 2.Bxg3#
- 1...Sf5
- 2.Rxf5#
- 1...Sf7
- 2.Rf5#
- 1...Sg8
- 2.Rf5#
- 1...f5
- 2.Qe5#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...d6
- 2.Se6#
- 1...a5!
- 1...Sg4
- 1.Qxd7?
- threat
- 2.Se6#
- 2.Qxc7#
- 1...Sf5
- 2.Qxf5#
- 1...c5
- 2.Qd6#
- 2.Qc7#
- 1...Sg4
- 2.Se6#
- 2.Qxg4#
- 2.Qf5#
- 1...Sf7
- 2.Se6#
- 2.Qg4#
- 2.Qf5#
- 1...c6
- 2.Se6#
- 2.Qd6#
- 2.Qc7#
- 1...f5!
- threat
- 1.Kb2?
- Keys
- 1.Qc5!
- 1...Sf5
- 2.Qxf5#
- 1...f5
- 2.Qe5#
- 1...d5
- 2.Qxc7#
- 1...Sg4
- 2.Qf5#
- 1...Bg5
- 2.Bxg3#
- 1...Sf7
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...c6
- 2.Qd6#
- 1...d6
- 2.Se6#
- 1...Sf5
- 1.Qc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- P(j);N_GUARD::S(J)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- P(j);N_GUARD::S(J)
- Refutation
- P(c);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- P(j);N_GUARD::S(J)
- Refutation
- P(c);
- Try
- K(C);P-FLIGHT,XP(c)
- Vars
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);N_GUARD::S(J)
- Refutation
- P(j);CHECK
- Try
- S(E);XP(g)
- Threat
- DUALS(3)
- Vars
- P(k);XS(E)::QAR1(I)
- P(i);::S(E)
- P(j);::S(E),XP(j)
- Refutation
- B(e);CHECK,XS(E)
- Try
- S(J);
- Vars
- P(j);OGATE,XS(J)::QAB(I),XP(i)
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(j);OGATE::QAB(I),XP(i)
- Refutation
- P(j);
- Try
- S(J);
- Vars
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- Refutation
- P(j);
- Try
- S(J);
- Vars
- S(h);N_GUARD,XS(J)::R1(F)
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- Refutation
- P(j);
- Try
- R(F);
- Vars
- S(h);N_GUARD::R1(F)
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);OGATE::QAB(I),XP(i)
- P(j);N_GUARD::S(J)
- Refutation
- P(f);
- Try
- R(F);
- Vars
- S(h);N_GUARD::R1(F)
- B(e);N_GUARD::B(B),XS(b)
- S(h);N_GUARD::R1(F),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(i);N_GUARD::QAB(I)
- P(j);N_GUARD::S(J)
- Refutation
- P(f);
- Try
- Q(I);XP(j)
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD::QAR1(I),XS(h)
- Refutation
- P(g);
- Try
- Actual
- Q(I);
- Vars
- S(h);N_GUARD::QAR1(I),XS(h)
- P(g);N_GUARD::QAB1(I)
- P(j);N_GUARD::QAB(I),XP(i)
- S(h);N_GUARD::QAR1(I)
- B(e);N_GUARD::B(B),XS(b)
- P(i);N_GUARD::QAB(I)
- P(j);N_GUARD::S(J)
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).