MESON Chess Problem Database
Problem Display
PID: 18151 (8/6p1/3N2N1/2n5/1PPk4/5Q2/2K1n3/6b1 w - - 0 1)
Maclay, J Neil
Time & Tide, 1953
#2
6 + 5
SOLUTION
- SOUND
- Sets
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qf2#
- 1...Be3
- 2.Qd5#
- 1...Sc1
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sg3
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sb3
- 2.Qe4#
- 2.Qd3#
- 1...Sd3
- 2.Qe4#
- 2.Qxd3#
- 1...Sa4
- 2.Qe4#
- 2.Qd3#
- 1...Se4
- 2.Qxe4#
- 2.Qd3#
- 1...Sa6
- 2.Qe4#
- 2.Qd3#
- 1...Se6
- 2.Qe4#
- 2.Qd3#
- 1...Sb7
- 2.Qe4#
- 2.Qd3#
- 1...Sd7
- 2.Qe4#
- 2.Qd3#
- 1...Bf2
- Tries
- 1.Kd2?
- threat
- 2.Qd5#
- 1...Be3+
- 2.Qxe3#
- 1...Se4+
- 2.Qxe4#
- 1...Sc3
- 2.Qxc3#
- 1...Sf4
- 2.Qc3#
- 1...Sb3+!
- threat
- 1.Qxe2?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Qe5#
- 1...Bh2
- 2.Sb5#
- 2.Sf5#
- 2.Qf2#
- 1...Sd3
- 2.Qxd3#
- 2.Qe4#
- 1...Se4
- 2.Sb5#
- 2.Sf5#
- 2.Qd3#
- 2.Qxe4#
- 1...Sd7
- 2.Sb5#
- 2.Sf5#
- 2.Qd3#
- 2.Qd2#
- 2.Qe4#
- 1...Be3!
- threat
- 1.Qg4+?
- 1...Sf4
- 2.Qxg1#
- 1...Se4
- 2.Qxe4#
- 1...Ke3!
- 1...Sf4
- 1.Qc6?
- threat
- 2.Qxc5#
- 1...Sb3
- 2.Sf5#
- 2.Qe4#
- 1...Sd3
- 2.Sf5#
- 2.Qe4#
- 1...Sa4
- 2.Sf5#
- 2.Qe4#
- 1...Se4
- 2.Sf5#
- 2.Qxe4#
- 1...Sa6
- 2.Sf5#
- 2.Qe4#
- 1...Se6
- 2.Sf5#
- 2.Qe4#
- 1...Sb7
- 2.Sf5#
- 2.Qe4#
- 1...Sd7
- 2.Sf5#
- 2.Qe4#
- 1...Ke3!
- threat
- 1.Qg3?
- threat
- 2.Qe5#
- 1...Bh2
- 2.Qf2#
- 1...Sf4
- 2.Qxg1#
- 2.Qc3#
- 1...Sd3
- 2.Qxd3#
- 1...Se4
- 2.Qd3#
- 1...Sd7
- 2.Qd3#
- 1...Sxg3!
- threat
- 1.Qf4+?
- 1...Se4
- 2.Qxe4#
- 1...Sxf4!
- 1...Se4
- 1.Qf5?
- threat
- 2.Qxc5#
- 2.Qe5#
- 1...Bh2
- 2.Qf2#
- 2.Qxc5#
- 1...Sb3
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Sd3
- 2.Qxd3#
- 2.Qe4#
- 1...Sa4
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Se6
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Sb7
- 2.Qd3#
- 2.Qe4#
- 2.Qe5#
- 1...Sd7
- 2.Qd3#
- 2.Qe4#
- 1...Ke3!
- threat
- 1.Kd2?
- Keys
- 1.Qg2!
- 1...Ke3
- 2.Sf5#
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qf2#
- 1...Be3
- 2.Qd5#
- 1...Sc1
- 2.Qxg1#
- 1...Sc3
- 2.Qxg1#
- 1...Sg3
- 2.Qxg1#
- 1...Sf4
- 2.Qxg1#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Ke3
- 1.Qg2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);N_GUARD::QAB(B)
- B(a);SBLOCK::QAR1(B)
- S(b);N_GUARD::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- Tries
- Try
- K(A);P-FLIGHT
- Threat
- QAR1(B)
- Vars
- B(a);CHECK,N_GUARD::QAB1(B),XB(a)
- S(d);CHECK,N_GUARD::QAR1(B),XS(d)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- Refutation
- S(d);CHECK
- Try
- Q(B);XS(b)
- Threat
- DUALS(3)
- Refutation
- B(a);
- Try
- Q(B);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB(B),XB(a)
- S(d);N_GUARD,P_SPINS(d)::QAR1(B),XS(d)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);
- Threat
- QAB1(B),XS(d)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(B);
- Threat
- QAB1(B)
- Vars
- B(a);N_GUARD::QAB(B)
- S(d);N_GUARD::QAR1(B),XS(d)
- S(d);N_GUARD::QAR1(B)
- Refutation
- S(b);XQ(B)
- Try
- Q(B);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAR1(B),XS(d)
- Refutation
- S(b);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD::QAR1(B),XS(d)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- K(c);S_FLIGHT::S(E)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);N_GUARD::QAB(B)
- B(a);SBLOCK::QAR1(B)
- S(b);N_GUARD::QAB(B),XB(a)
- S(d);N_GUARD::QAR1(B)
- S(d);N_GUARD::QAR1(B),XS(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).