MESON Chess Problem Database
Problem Display
PID: 179556 (7b/2p1QN2/1pn1P2B/4Pp2/4kN2/K6R/4B1n1/3R4 w - - 0 1)
Rice, John Michael
Busmen's Chess Review, 1969
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Bf3#
- 1...Sb4
- 2.Qxb4#
- 1...Sd4
- 2.Bd3#
- 1...Sa7
- 2.Qb4#
- 1...Sb8
- 2.Qb4#
- 1...Sd8
- 2.Qb4#
- 1...Se3
- Tries
- 1.Sd5?
- threat
- 2.Sc3#
- 2.Bf3#
- 1...Bxe5
- 2.Sg5#
- 2.Bf3#
- 1...Sxe5
- 2.Sc3#
- 2.Sg5#
- 1...Sd4
- 2.Sc3#
- 1...Se1
- 2.Sc3#
- 2.Re3#
- 1...Sh4
- 2.Sc3#
- 2.Re3#
- 1...f4!
- threat
- 1.Sg5+?
- 1...Kxe5
- 2.Sg6#
- 1...Kxf4!
- 1...Kxe5
- 1.Sd6+?
- 1...Kxe5
- 2.Sg6#
- 2.Rd5#
- 1...cxd6!
- 1...Kxe5
- 1.Rd4+?
- 1...Sxd4
- 2.Bd3#
- 1...Kxd4!
- 1...Sxd4
- 1.Qb4+?
- 1...Sd4
- 2.Bd3#
- 2.Rxd4#
- 2.Qxd4#
- 1...Sxb4!
- 1...Sd4
- 1.Qc5?
- threat
- 2.Bd3#
- 2.Bf3#
- 2.Qc2#
- 2.Qd5#
- 2.Qxc6#
- 1...Sxf4
- 2.Sg5#
- 2.Bf3#
- 2.Re3#
- 2.Qe3#
- 1...Sxe5
- 2.Rd4#
- 2.Qd4#
- 2.Qd5#
- 1...Se1
- 2.Re3#
- 2.Qe3#
- 2.Qd5#
- 2.Qxc6#
- 1...Se3
- 2.Bd3#
- 2.Bf3#
- 2.Rxe3#
- 2.Qxe3#
- 1...Sh4
- 2.Bd3#
- 2.Re3#
- 2.Qe3#
- 2.Qc2#
- 2.Qd5#
- 2.Qxc6#
- 1...Sb4
- 2.Bf3#
- 2.Rd4#
- 2.Qxb4#
- 2.Qd4#
- 2.Qc4#
- 1...Sd4
- 2.Bd3#
- 2.Rxd4#
- 2.Qxd4#
- 2.Qd5#
- 1...Sa5
- 2.Bd3#
- 2.Bf3#
- 2.Rd4#
- 2.Qd4#
- 2.Qc2#
- 2.Qd5#
- 1...Sa7
- 2.Bd3#
- 2.Bf3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 2.Qd5#
- 1...Se7
- 2.Bd3#
- 2.Bf3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 1...Sb8
- 2.Bd3#
- 2.Bf3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 2.Qd5#
- 1...Sd8
- 2.Bd3#
- 2.Bf3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd4#
- 2.Qc2#
- 2.Qc4#
- 2.Qd5#
- 1...bxc5!
- threat
- 1.Qd6?
- threat
- 2.Bd3#
- 2.Qd3#
- 2.Qd5#
- 2.Qxc6#
- 1...Sxf4
- 2.Sg5#
- 1...Sxe5
- 2.Rd4#
- 2.Qd4#
- 2.Qd5#
- 1...Se1
- 2.Qd5#
- 2.Qxc6#
- 1...Se3
- 2.Bd3#
- 2.Bf3#
- 2.Qd3#
- 1...Sb4
- 2.Rd4#
- 2.Qxb4#
- 2.Qd4#
- 1...Sd4
- 2.Bd3#
- 2.Rxd4#
- 2.Qxd4#
- 2.Qd5#
- 1...Sa5
- 2.Bd3#
- 2.Rd4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sa7
- 2.Bd3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Se7
- 2.Bd3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd3#
- 2.Qd4#
- 1...Sb8
- 2.Bd3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sd8
- 2.Bd3#
- 2.Rd4#
- 2.Qb4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...cxd6!
- threat
- 1.Qd7?
- threat
- 2.Bd3#
- 2.Qxc6#
- 2.Qd3#
- 2.Qd5#
- 1...Sxe5
- 2.Rd4#
- 2.Qd4#
- 2.Qd5#
- 1...Se1
- 2.Qxc6#
- 2.Qd5#
- 1...Se3
- 2.Bd3#
- 2.Bf3#
- 2.Qd3#
- 1...Sb4
- 2.Rd4#
- 2.Qd4#
- 1...Sd4
- 2.Bd3#
- 2.Rxd4#
- 2.Qxd4#
- 2.Qd5#
- 1...Sa5
- 2.Bd3#
- 2.Rd4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sa7
- 2.Bd3#
- 2.Rd4#
- 2.Qa4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Se7
- 2.Bd3#
- 2.Rd4#
- 2.Qa4#
- 2.Qd3#
- 2.Qd4#
- 1...Sb8
- 2.Bd3#
- 2.Rd4#
- 2.Qa4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sd8
- 2.Bd3#
- 2.Rd4#
- 2.Qa4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Sxf4!
- threat
- 1.Sd5?
- Keys
- 1.Qxc7!
- threat
- 2.Qxc6#
- 1...Sxf4
- 2.Sg5#
- 1...Sxe5
- 2.Sd6#
- 1...Se3
- 2.Bf3#
- 1...Sb4
- 2.Qc4#
- 1...Sd4
- 2.Bd3#
- 1...Sa5
- 2.Qc2#
- 1...Sa7
- 2.Qc2#
- 2.Qc4#
- 1...Se7
- 2.Qc2#
- 2.Qc4#
- 1...Sb8
- 2.Qc2#
- 2.Qc4#
- 1...Sd8
- 2.Qc2#
- 2.Qc4#
- threat
- 1.Qxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- S(a);SBLOCK::B(B)
- S(e);N_GUARD::QAR(I),XS(e)
- S(e);SBLOCK::B(B)
- S(e);N_GUARD::QAR(I)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(e);::S(E)
- Refutation
- P(c);
- Try
- S(J);CHECK
- Vars
- K(b);P-FLIGHT,XP(F)::S(E)
- Refutation
- K(b);P-FLIGHT,XS(E)
- Try
- S(J);CHECK
- Refutation
- P(f);XS(J)
- Try
- R(A);CHECK
- Vars
- S(e);SBLOCK,XR(A)::B(B)
- Refutation
- K(b);P-FLIGHT,XR(A)
- Try
- Q(I);CHECK
- Refutation
- S(e);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(5)
- Refutation
- P(d);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- S(a);SBLOCK,XS(E)::S(J)
- Refutation
- P(f);XQ(I)
- Try
- Q(I);
- Threat
- DUALS(4)
- Refutation
- S(a);XS(E)
- Try
- Actual
- Q(I);XP(f)
- Threat
- QAB(I),XS(e)
- Vars
- S(a);SBLOCK,XS(E)::S(J)
- S(e);SBLOCK,XP(F)::S(J)
- S(a);SBLOCK::B(B)
- S(e);OGATE::QAR2(I)
- S(e);SBLOCK::B(B)
- S(e);OGATE::QAB(I)
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).