MESON Chess Problem Database
Problem Display
PID: 51111 (3N4/2B5/r1P5/r1kbR1n1/2P5/bQP1n3/3N4/1K6 w - - 0 1)
Clark, Cecil Henry Douglas
Manchester Guardian, 1949
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Ra4
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Rb6
- 2.Qxb6#
- 1...Rxc6
- 2.Sb7#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Bc1
- 2.Qb4#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sd1
- 2.Rxd5#
- 1...Sf1
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sxc4
- 2.Qxc4#
- 1...Sg4
- 2.Rxd5#
- 1...Sf5
- 2.Rxd5#
- 1...Sf3
- 2.Se4#
- 1...Sh3
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Se6
- 2.Se4#
- 1...Sf7
- 2.Se4#
- 1...Sh7
- 2.Se4#
- 1...Ra4
- Tries
- 1.Rf5?
- 1...Rxc6
- 2.Sb7#
- 1...Sxc4
- 2.Qxc4#
- 1...Rb6
- 2.Qxb6#
- 1...Ra4
- 2.Qb5#
- 1...Rb5
- 2.Qxb5#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Bc1
- 2.Qb4#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sd1
- 2.Rxd5#
- 1...Sf1
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sf3
- 2.Se4#
- 1...Sh3
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Se6
- 2.Se4#
- 1...Sf7
- 2.Se4#
- 1...Sh7
- 2.Se4#
- 1...Sxf5!
- 1...Rxc6
- 1.cxd5?
- threat
- 2.Sb7#
- 1...Sxd5
- 2.Rxd5#
- 2.Qc4#
- 2.Qxd5#
- 1...Bb4
- 2.Qxb4#
- 1...Rb6
- 2.Qxb6#
- 1...Ra7
- 2.Qb6#
- 1...Rb5!
- threat
- 1.Rf5?
- Keys
- 1.Qb7!
- 1...Rb5+
- 2.Qxb5#
- 1...Rb6+
- 2.Qxb6#
- 1...Rxc6
- 2.Qxc6#
- 1...Sxc4
- 2.Sb3#
- 1...Ra4
- 2.Qb5#
- 1...Ra7
- 2.Qb6#
- 1...Ra8
- 2.Qb6#
- 1...Bc1
- 2.Qb4#
- 1...Bb2
- 2.Qb4#
- 1...Bb4
- 2.Qxb4#
- 1...Sd1
- 2.Rxd5#
- 1...Sf1
- 2.Rxd5#
- 1...Sc2
- 2.Rxd5#
- 1...Sg2
- 2.Rxd5#
- 1...Sg4
- 2.Rxd5#
- 1...Sf5
- 2.Rxd5#
- 1...Sf3
- 2.Se6#
- 1...Sh3
- 2.Se6#
- 1...Se4
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sf7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...Rb5+
- 1.Qb7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAR1(C)
- R(c);N_GUARD,P_PINQ(C)::QAR1(C),XR(c)
- R(g);N_GUARD,P_PINQ(C)::QAB1(C),XR(g)
- R(g);SBLOCK,XP(G)::S(I)
- R(g);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(b);N_GUARD::R1(F),XB(e)
- S(b);OGATE,XP(E)::QAR1(C),XS(b)
- S(f);N_GUARD::S(B)
- S(f);N_GUARD::S(B),XS(f)
- Tries
- Try
- R(F);
- Vars
- R(g);SBLOCK,XP(G)::S(I)
- S(b);OGATE,XP(E)::QAR1(C),XS(b)
- R(g);N_GUARD,P_PINQ(C)::QAB1(C),XR(g)
- R(c);N_GUARD::QAR1(C)
- R(c);N_GUARD,P_PINQ(C)::QAR1(C),XR(c)
- R(g);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(b);N_GUARD::R1(F),XB(e)
- S(f);N_GUARD::S(B)
- S(f);N_GUARD::S(B),XS(f)
- Refutation
- S(b);N_SPINB(e),XR(F)
- Try
- P(E);XB(e)
- Threat
- S(I)
- Vars
- B(a);N_GUARD::QAB1(C),XB(a)
- R(g);N_GUARD,P_PINQ(C)::QAB1(C),XR(g)
- R(g);N_GUARD::QAB1(C)
- Refutation
- R(c);P_PINQ(C)
- Try
- Actual
- Q(C);
- Vars
- R(c);CHECK,N_GUARD::QAR1(C),XR(c)
- R(g);CHECK,N_GUARD::QAB1(C),XR(g)
- R(g);OGATE,XP(G)::QAR1(C),XR(g)
- S(b);SBLOCK,XP(E)::S(B)
- R(c);N_GUARD::QAR1(C)
- R(g);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(b);N_GUARD::R1(F),XB(e)
- S(f);N_GUARD::S(I)
- S(f);N_GUARD::S(I),XS(f)
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).