MESON Chess Problem Database
Problem Display
PID: 132577 (6QK/3pN1B1/6p1/6P1/4k2b/1rnb1R1N/B5P1/5n2 w - - 0 1)
Luke, R
The Field, 1957
(First published on Thu Jul 25 1957)
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Qc4#
- 1...Bc2
- 2.Qc4#
- 1...Bc4
- 2.Qxc4#
- 1...Bf2
- 2.Sxf2#
- 1...Bxg5
- 2.Sf2#
- 2.Sxg5#
- 1...Se3
- 2.Rf4#
- 1...Sg3
- 2.Sf2#
- 1...Sb1
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sxa2
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...d5
- 2.Qe6#
- 1...d6
- 2.Qe6#
- 1...Bb1
- Tries
- 1.Bb1?
- threat
- 2.Bxd3#
- 2.Qc4#
- 1...Bxb1
- 2.Qc4#
- 1...Sxb1
- 2.Qd5#
- 1...Rb4
- 2.Bxd3#
- 1...Rb8
- 2.Bxd3#
- 1...Bc2
- 2.Bxc2#
- 2.Qc4#
- 1...Bf2
- 2.Sxf2#
- 2.Bxd3#
- 1...Sd2
- 2.Bxd3#
- 1...Se3
- 2.Rf4#
- 1...Sd1
- 2.Qc4#
- 2.Qd5#
- 1...Sa2
- 2.Qc4#
- 2.Qd5#
- 1...Se2
- 2.Qd5#
- 1...Sa4
- 2.Qc4#
- 2.Qd5#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...d5
- 2.Bxd3#
- 2.Qe6#
- 1...Rxb1!
- threat
- 1.Bxc3?
- threat
- 2.Qd5#
- 2.Qxg6#
- 1...Rxc3
- 2.Qd5#
- 1...Rb6
- 2.Bd5#
- 2.Qd5#
- 1...Rb8
- 2.Bd5#
- 1...Bc4
- 2.Qxc4#
- 2.Qxg6#
- 1...Se3
- 2.Rf4#
- 1...Sg3
- 2.Sf2#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 2.Qe6#
- 2.Qxg6#
- 1...Rb5!
- threat
- 1.Qf7?
- threat
- 2.Qxg6#
- 2.Qf4#
- 1...Bxg5
- 2.Sf2#
- 2.Sxg5#
- 2.Qxg6#
- 1...Rb5
- 2.Qf4#
- 1...Rb6
- 2.Qf4#
- 1...Bg3
- 2.Qxg6#
- 1...Se3
- 2.Rf4#
- 2.Qf4#
- 1...Sg3
- 2.Sf2#
- 2.Qf4#
- 1...Se2
- 2.Qd5#
- 2.Qxg6#
- 1...Sd5
- 2.Qxd5#
- 2.Qxg6#
- 1...Rb8+!
- threat
- 1.Qh7?
- threat
- 2.Qxg6#
- 2.Qxh4#
- 1...Bxg5
- 2.Sf2#
- 2.Sxg5#
- 2.Qxg6#
- 1...Rb5
- 2.Qxh4#
- 1...Rb6
- 2.Qxh4#
- 1...Be1
- 2.Qxg6#
- 1...Bf2
- 2.Sxf2#
- 2.Qxg6#
- 1...Bg3
- 2.Qxg6#
- 1...Sh2
- 2.Qxg6#
- 1...Se3
- 2.Rf4#
- 1...Sg3
- 2.Sf2#
- 2.Qxh4#
- 1...Se2
- 2.Qxg6#
- 1...Sd5
- 2.Qxg6#
- 1...Rb8+!
- threat
- 1.Bb1?
- Keys
- 1.Qe8!
- threat
- 2.Qxg6#
- 1...Rb5
- 2.Sd5#
- 1...Rb6
- 2.Sc6#
- 1...Rb8
- 2.Sc8#
- 1...Se3
- 2.Rf4#
- 1...Sg3
- 2.Sf2#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- B(d);N_GUARD::QAR2(H)
- B(d);N_GUARD::QAR2(H),XB(d)
- B(f);N_GUARD::S(D),XB(f)
- S(a);SBLOCK::R1(C)
- S(a);S_CUTB(f)::S(D)
- S(c);N_GUARD::QAB1(H)
- S(c);N_GUARD,XB(A)::QAB1(H)
- S(c);N_GUARD::QAB1(H),XS(c)
- P(h);N_GUARD::QAR2(H)
- Tries
- Try
- B(A);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- B(d);N_SPINB(d),XB(A)::QAR2(H)
- S(c);N_GUARD,N_SPINB(d),XB(A)::QAB1(H)
- R(b);::B(A),XB(d)
- R(b);P_PINQ(H)::B(A),XB(d)
- S(a);::B(A),XB(d)
- S(a);SBLOCK::R1(C)
- S(c);N_GUARD::QAB1(H)
- S(c);N_GUARD::QAB1(H),XS(c)
- Refutation
- R(b);N_SPINB(d),XB(A)
- Try
- B(G);XS(c)
- Threat
- DUALS(2)
- Vars
- R(b);XB(G)::QAB1(H)
- R(b);OGATE,P_PINQ(H)::B(A)
- S(a);SBLOCK::R1(C)
- Refutation
- R(b);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(b);::QAR1(H)
- B(f);::QAB(H),XP(g)
- Refutation
- R(b);CHECK
- Try
- Q(H);P_PINP(g)
- Threat
- DUALS(2)
- Vars
- R(b);::QAR(H),XB(f)
- B(f);::QAB(H),XP(g)
- S(a);::QAB(H),XP(g)
- S(a);SBLOCK::R1(C)
- S(c);::QAB(H),XP(g)
- Refutation
- R(b);CHECK
- Try
- Actual
- Q(H);
- Threat
- QAB(H),XP(g)
- Vars
- R(b);::QAR(H)+S(F)
- R(b);P_PINQ(H)::QAR(H)+S(F)
- S(a);SBLOCK::R1(C)
- S(a);S_CUTB(f)::S(D)
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).