MESON Chess Problem Database
Problem Display
PID: 205597 (b1B5/2b2pKn/2p5/4kp2/1R4p1/2n5/1N1R4/7Q w - - 0 1)
Braithwaite, Kenneth Holmes
The Problemist, 1984
#2
6 + 9
SOLUTION
- SOUND
- Sets
- 1...Bd6
- 2.Sd3#
- 1...Sb1
- 2.Qe1#
- 1...Sa2
- 2.Qe1#
- 1...Sa4
- 2.Qe1#
- 1...Sb5
- 2.Qe1#
- 1...f4
- 2.Sc4#
- 1...Bd6
- Tries
- 1.Qf3?
- threat
- 2.Sc4#
- 2.Qxc3#
- 2.Qf4#
- 2.Qxf5#
- 1...Sd5
- 2.Sc4#
- 1...Bb6
- 2.Sc4#
- 2.Qf4#
- 2.Qxf5#
- 1...Sb1
- 2.Sc4#
- 2.Qe2#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Sd1
- 2.Sc4#
- 2.Qf4#
- 2.Qxf5#
- 1...Sa2
- 2.Sc4#
- 2.Qe2#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Se2
- 2.Sc4#
- 2.Qxe2#
- 2.Qe3#
- 2.Qxf5#
- 1...Sa4
- 2.Sc4#
- 2.Qe2#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Se4
- 2.Sc4#
- 2.Qxf5#
- 1...Sb5
- 2.Sc4#
- 2.Qe2#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...f4
- 2.Sc4#
- 2.Qxc3#
- 2.Qxf4#
- 1...gxf3!
- threat
- 1.Qxc6?
- threat
- 2.Sd3#
- 2.Qe8#
- 2.Qxc3#
- 2.Qxc7#
- 1...Se4
- 2.Sd3#
- 1...Ba5
- 2.Sd3#
- 2.Qe8#
- 2.Qxc3#
- 2.Qd6#
- 1...Bb6
- 2.Sd3#
- 2.Qe8#
- 2.Qd6#
- 1...Bd6
- 2.Sd3#
- 2.Qxc3#
- 2.Qxd6#
- 1...Bb8
- 2.Sd3#
- 2.Qe8#
- 2.Qxc3#
- 1...Bd8
- 2.Sd3#
- 2.Qxc3#
- 2.Qd6#
- 1...Sb1
- 2.Sd3#
- 2.Re2#
- 2.Rd5#
- 2.Qe8#
- 2.Qxc7#
- 1...Sd1
- 2.Sd3#
- 2.Rd5#
- 2.Qe8#
- 2.Qxc7#
- 1...Sa2
- 2.Sd3#
- 2.Re2#
- 2.Rd5#
- 2.Qe8#
- 2.Qxc7#
- 1...Se2
- 2.Sd3#
- 2.Rxe2#
- 2.Rd5#
- 2.Qe8#
- 2.Qxc7#
- 1...Sa4
- 2.Sd3#
- 2.Re2#
- 2.Rd5#
- 2.Qe8#
- 2.Qxc7#
- 1...Sb5
- 2.Sd3#
- 2.Re2#
- 2.Rd5#
- 2.Qe8#
- 1...Sd5
- 2.Sd3#
- 2.Rxd5#
- 1...Sg5
- 2.Sd3#
- 2.Qxc3#
- 2.Qf6#
- 2.Qxc7#
- 1...Sf6
- 2.Sd3#
- 2.Qxc3#
- 2.Qxf6#
- 2.Qxc7#
- 1...Sf8
- 2.Sd3#
- 2.Qxc3#
- 2.Qf6#
- 2.Qxc7#
- 1...Bxc6!
- threat
- 1.Qe1+?
- 1...Se2
- 2.Qxe2#
- 1...Se4!
- 1...Se2
- 1.Qf1?
- threat
- 2.Qf4#
- 2.Qxf5#
- 1...Se2
- 2.Qxe2#
- 2.Qxf5#
- 1...Se4
- 2.Sc4#
- 2.Qxf5#
- 1...f4
- 2.Qxf4#
- 1...Sd5!
- threat
- 1.Qh2+?
- 1...f4
- 2.Qxf4#
- 1...g3!
- 1...f4
- 1.Qxh7?
- threat
- 2.Qxf5#
- 1...f4
- 2.Sc4#
- 2.Qf5#
- 1...Sd5!
- threat
- 1.Qf3?
- Keys
- 1.Qh6!
- threat
- 2.Qf4#
- 1...Se2
- 2.Qe3#
- 1...Se4
- 2.Sc4#
- 1...Sd5
- 2.Sd3#
- 1...Sg5
- 2.Qf6#
- 1...f4
- 2.Qxf4#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- B(f);SBLOCK::S(B)
- S(a);N_GUARD::QAR(A)
- P(d);SBLOCK::S(B)
- Tries
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- S(a);::S(B)
- Refutation
- P(b);XQ(A)
- Try
- Q(A);XP(e)
- Threat
- DUALS(4)
- Vars
- S(a);::S(B)
- Refutation
- B(i);XQ(A)
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR(A),XS(a)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(d);::QAB1(A),XP(d)
- Refutation
- S(a);
- Try
- Q(A);CHECK
- Vars
- P(d);P_SPINP(d)::QAB1(A),XP(d)
- Refutation
- P(b);P_SPINP(b)
- Try
- Q(A);XS(h)
- Threat
- QAR1(A),XP(d)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(a);N_GUARD::QAR2(A)
- S(a);SBLOCK::S(B)
- S(h);N_GUARD::QAB1(A)
- P(d);::QAB1(A),XP(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).