MESON Chess Problem Database
Problem Display
PID: 18150 (8/8/2N2nB1/2p5/2n2k1B/3Q1p1P/8/2K5 w - - 0 1)
Maclay, J Neil
Time & Tide, 1953
#2
6 + 5
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sa3
- 2.Qd2#
- 1...Se3
- 2.Qd6#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...f2
- 2.Qg3#
- 1...Sb2
- Tries
- 1.Kb1?
- 1...Sd2+
- 2.Qxd2#
- 1...Sb2
- 2.Qd2#
- 1...Se3
- 2.Qd6#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...f2
- 2.Qg3#
- 1...Sa3+!
- 1...Sd2+
- 1.Bh7?
- 1...Sb2
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sa3
- 2.Qd2#
- 1...Se3
- 2.Qd6#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...f2
- 2.Qg3#
- 1...Sxh7!
- 1...Sb2
- 1.Qe2?
- 1...Sb2
- 2.Qd2#
- 2.Qe5#
- 1...Sd2
- 2.Qxd2#
- 2.Qe5#
- 1...Sa3
- 2.Qd2#
- 2.Qe5#
- 1...Se3
- 2.Qh2#
- 1...Sa5
- 2.Qd2#
- 2.Qe5#
- 1...Se5
- 2.Qd2#
- 2.Qxe5#
- 1...Sb6
- 2.Qd2#
- 2.Qe5#
- 1...Sd6
- 2.Qd2#
- 2.Qe5#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...f2
- 2.Qxf2#
- 1...fxe2!
- 1...Sb2
- 1.Qxc4+?
- 1...Se4
- 2.Qxe4#
- 1...Ke3!
- 1...Se4
- 1.Qd2+?
- 1...Se3
- 2.Qh2#
- 2.Qd6#
- 1...Sxd2!
- 1...Se3
- 1.Qd4+?
- 1...Se4
- 2.Qxe4#
- 1...cxd4!
- 1...Se4
- 1.Kb1?
- Keys
- 1.Qc2!
- 1...Ke3
- 2.Bg5#
- 1...f2
- 2.Qxf2#
- 1...Sb2
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sa3
- 2.Qd2#
- 1...Se3
- 2.Qh2#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sh7
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Sg8
- 2.Qe4#
- 1...Ke3
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAB(B)
- S(b);N_GUARD::QAB(B),XS(b)
- S(b);N_GUARD,SBLOCK::QAB(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- P(a);OGATE::QAB1(B)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::QAB(B),XS(b)
- S(b);N_GUARD::QAB(B)
- S(b);N_GUARD,SBLOCK::QAB(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- P(a);OGATE::QAB1(B)
- Refutation
- S(b);CHECK
- Try
- B(F);
- Vars
- S(b);N_GUARD::QAB(B)
- S(b);N_GUARD::QAB(B),XS(b)
- S(b);N_GUARD,SBLOCK::QAB(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- P(a);OGATE::QAB1(B)
- Refutation
- S(e);XB(F)
- Try
- Q(B);
- Vars
- S(b);SBLOCK::QAB(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- P(a);OGATEB::QAR2(B),XP(a)
- Refutation
- P(a);XQ(B)
- Try
- Q(B);CHECK,XS(b)
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(B),XS(e)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- S(b);XQ(B)
- Try
- Q(B);CHECK
- Vars
- S(e);N_GUARD,P_SPINS(e)::QAR1(B),XS(e)
- Refutation
- P(d);XQ(B)
- Try
- Actual
- Q(B);
- Vars
- K(c);S_FLIGHT::B(D)
- P(a);OGATEB::QAR2(B),XP(a)
- S(b);N_GUARD::QAB(B)
- S(b);N_GUARD::QAB(B),XS(b)
- S(b);SBLOCK::QAB(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
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).