MESON Chess Problem Database
Problem Display
PID: 67860 (5n2/4N3/p5pb/R5p1/4pk2/4p2R/1p2P2P/1K4Qn w - - 0 1)
Clark, Cecil Henry Douglas
Chess, 1948
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Bg7
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4
- 2.Qxe3#
- 1...Bg7
- Tries
- 1.Kxb2?
- 1...Sg3
- 2.Qxg3#
- 1...Sf2
- 2.Qg3#
- 1...Se6
- 2.Sxg6#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4
- 2.Qxe3#
- 1...Bg7+!
- 1...Sg3
- 1.Rxe3?
- 1...Sf2
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Bg7
- 2.Qxg5#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4!
- 1...Sf2
- 1.Rg3?
- threat
- 2.Rg4#
- 2.Qxe3#
- 1...Sxg3
- 2.Qxg3#
- 1...g4
- 2.Rxg4#
- 2.Qxe3#
- 1...Sf2!
- threat
- 1.Rh4+?
- 1...g4
- 2.Rxg4#
- 2.Qxg4#
- 1...gxh4!
- 1...g4
- 1.Rxh6?
- threat
- 2.Qxg5#
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4!
- threat
- 1.Rc5?
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Bg7
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4
- 2.Qxe3#
- 1...a5!
- 1...Sg3
- 1.Rd5?
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Bg7
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4
- 2.Qxe3#
- 1...a5!
- 1...Sg3
- 1.Rxg5?
- threat
- 2.Sd5#
- 2.Rh4#
- 2.Qxe3#
- 2.Qg4#
- 1...Sg3
- 2.Qxg3#
- 1...Sf2
- 2.Sd5#
- 2.Qg3#
- 1...Bxg5!
- threat
- 1.Qg2?
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Bg7
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4!
- 1...Sg3
- 1.Kxb2?
- Keys
- 1.Rh5!
- 1...gxh5
- 2.Rf5#
- 1...Sg3
- 2.Qxg3#
- 1...Se6
- 2.Sxg6#
- 1...Bg7
- 2.Qxg5#
- 1...Sf2
- 2.Qg3#
- 1...Sd7
- 2.Sxg6#
- 1...Sh7
- 2.Sxg6#
- 1...g4
- 2.Sd5#
- 1...gxh5
- 1.Rh5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(i);N_GUARD::QAB1(B),XP(f)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- P(f);SBLOCK::QAB1(B),XP(c)
- Tries
- Try
- K(A);P-FLIGHT,XP(b)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- S(j);N_GUARD::S(G),XP(h)
- P(f);SBLOCK::QAB1(B),XP(c)
- Refutation
- B(i);CHECK
- Try
- R(E);XP(c)
- Vars
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- B(i);N_GUARD::QAB1(B),XP(f)
- Refutation
- P(f);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XR(E)::QAB1(B),XS(a)
- Refutation
- S(a);
- Try
- R(E);CHECK
- Refutation
- P(f);XR(E)
- Try
- R(E);XB(i)
- Threat
- QAB1(B),XP(f)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- Refutation
- P(f);
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- B(i);N_GUARD::QAB1(B),XP(f)
- S(a);N_GUARD::QAB1(B)
- P(f);SBLOCK::QAB1(B),XP(c)
- Refutation
- P(g);
- Try
- R(F);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- B(i);N_GUARD::QAB1(B),XP(f)
- S(a);N_GUARD::QAB1(B)
- P(f);SBLOCK::QAB1(B),XP(c)
- Refutation
- P(g);
- Try
- R(F);XP(f)
- Threat
- DUALS(4)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- Refutation
- B(i);XR(F)
- Try
- Q(B);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- B(i);N_GUARD::QAB1(B),XP(f)
- S(a);N_GUARD::QAB1(B)
- Refutation
- P(f);
- Try
- Actual
- R(E);
- Vars
- P(h);N_GUARD,XR(E)::R1(F)
- S(a);N_GUARD::QAB1(B),XS(a)
- S(j);N_GUARD::S(G),XP(h)
- B(i);N_GUARD::QAB1(B),XP(f)
- S(a);N_GUARD::QAB1(B)
- P(f);::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).