MESON Chess Problem Database
Problem Display
PID: 100865 (2n4n/2Np2Q1/5K1p/3B1p1R/3k2P1/B1R3N1/2q1P3/8 w - - 0 1)
Burnham, Lincoln
Good Companions, 1920
#2
10 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Kxf5#
- 1...Qb3
- 2.Kxf5#
- 1...Qd3
- 2.Rxd3#
- 1...Qa4
- 2.Kxf5#
- 2.Rd3#
- 1...Qc1
- 2.Kxf5#
- 2.Rd3#
- 1...Qa2
- 2.Kxf5#
- 2.Rd3#
- 1...Qb2
- 2.Kxf5#
- 2.Rd3#
- 1...Qd2
- 2.Kxf5#
- 1...Qxe2
- 2.Sxe2#
- 1...Qxc3
- 2.Sxf5#
- 1...Sb6
- 2.Ke7#
- 1...Sd6
- 2.Ke7#
- 1...Sa7
- 2.Ke7#
- 1...Se7
- 2.Kxe7#
- 1...Sg6
- 2.Kxg6#
- 1...Sf7
- 2.Kxf7#
- 1...fxg4
- 2.Sb5#
- 1...f4
- 2.Sb5#
- 1...d6
- 2.Ke6#
- 1...Qd1
- Tries
- 1.Sf1?
- 1...Kxc3
- 2.Sb5#
- 1...Qxc3
- 2.Kxf5#
- 1...fxg4
- 2.Sb5#
- 1...Qb1
- 2.Rc4#
- 1...Qd1
- 2.Kxf5#
- 2.Rc4#
- 1...Qb3
- 2.Kxf5#
- 1...Qd3
- 2.Rxd3#
- 1...Qa4
- 2.Kxf5#
- 2.Rd3#
- 1...Qe4
- 2.Rc4#
- 1...Qc1
- 2.Kxf5#
- 2.Rd3#
- 1...Qa2
- 2.Kxf5#
- 2.Rd3#
- 1...Qb2
- 2.Kxf5#
- 2.Rd3#
- 2.Rc4#
- 1...Qd2
- 2.Kxf5#
- 2.Rc4#
- 1...Sb6
- 2.Ke7#
- 1...Sd6
- 2.Ke7#
- 1...Sa7
- 2.Ke7#
- 1...Se7
- 2.Kxe7#
- 1...Sg6
- 2.Kxg6#
- 1...Sf7
- 2.Kxf7#
- 1...f4
- 2.Sb5#
- 1...d6
- 2.Ke6#
- 1...Qxe2!
- 1...Kxc3
- 1.Sxf5+?
- 1...Qxf5+
- 2.Kxf5#
- 1...Kxc3!
- 1...Qxf5+
- 1.Bb4?
- threat
- 2.e3#
- 1...Qxe2
- 2.Sxe2#
- 2.Sxf5#
- 1...Qxc3
- 2.Sxf5#
- 1...Qd3
- 2.Rxd3#
- 1...Qc1
- 2.Kxf5#
- 2.Sxf5#
- 2.Rd3#
- 1...Qd2
- 2.Kxf5#
- 2.Sxf5#
- 1...f4
- 2.Sb5#
- 1...Qe4!
- threat
- 1.Rxc2?
- threat
- 2.Sxf5#
- 2.Bc5#
- 1...fxg4
- 2.Sf5#
- 2.Bc5#
- 1...Sd6
- 2.Bc5#
- 1...Se7
- 2.Bc5#
- 1...f4
- 2.Sf5#
- 2.Bc5#
- 1...d6
- 2.Sxf5#
- 1...Ke3!
- threat
- 1.Qg5?
- threat
- 2.Qe3#
- 1...Kxc3
- 2.Sb5#
- 1...Qxe2
- 2.Sxe2#
- 1...Qxc3
- 2.Sxf5#
- 2.Qf4#
- 1...Qe4
- 2.Rc4#
- 1...Qd3
- 2.Rxd3#
- 1...Qc1
- 2.Rd3#
- 1...Qd2
- 2.Rc4#
- 2.Qxd2#
- 1...f4
- 2.Sb5#
- 2.Qe5#
- 1...hxg5!
- threat
- 1.Qe7?
- threat
- 2.Qb4#
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Kxc3
- 2.Qb4#
- 1...Qxe2
- 2.Sxe2#
- 2.Qc5#
- 1...Qxc3
- 2.Sxf5#
- 2.Qe5#
- 1...Qe4
- 2.Qb4#
- 2.Qc5#
- 1...Qb1
- 2.Rc4#
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Qb3
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Qd3
- 2.Rxd3#
- 2.Qc5#
- 2.Qe5#
- 1...Qa4
- 2.Rd3#
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Qc1
- 2.Rd3#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...Qa2
- 2.Rd3#
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Qb2
- 2.Rd3#
- 2.Rc4#
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Qd2
- 2.Rc4#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...Sb6
- 2.Qc5#
- 2.Qe3#
- 2.Qe5#
- 1...Sd6
- 2.Qe3#
- 2.Qe5#
- 1...Sg6
- 2.Qb4#
- 2.Qc5#
- 2.Qe3#
- 1...Sf7
- 2.Qb4#
- 2.Qc5#
- 2.Qe3#
- 1...f4
- 2.Sb5#
- 2.Qb4#
- 2.Qc5#
- 2.Qe5#
- 1...d6
- 2.Qe3#
- 1...Sxe7!
- threat
- 1.Sf1?
- Keys
- 1.Qxh6!
- threat
- 2.Qe3#
- 1...Kxc3
- 2.Sb5#
- 1...Qxe2
- 2.Sxe2#
- 1...Qxc3
- 2.Sxf5#
- 2.Qf4#
- 1...Qe4
- 2.Rc4#
- 1...Qd3
- 2.Rxd3#
- 1...Qc1
- 2.Rd3#
- 1...Qd2
- 2.Rc4#
- 2.Qxd2#
- 1...f4
- 2.Sb5#
- threat
- 1.Qxh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- Q(a);::QAB(J)+K(H),XP(c)
- Q(a);N_GUARD::R1(C),XQ(a)
- Q(a);XP(A)::S(D),XQ(a)
- Q(a);N_GUARD,SBLOCK,XR(C)::S(D),XP(c)
- S(f);::QAB(J)+K(H)
- S(f);::QAB(J)+K(H),XS(f)
- S(g);::QAB(J)+K(H),XS(g)
- P(c);XP(E)::S(I)
- P(c);::S(I)
- P(e);::QAB(J)+K(H)
- Tries
- Try
- S(D);
- Vars
- K(b);S_FLIGHT,XR(C)::S(I)
- Q(a);SBLOCK,XR(C)::QAB(J)+K(H),XP(c)
- P(c);XP(E)::S(I)
- Q(a);N_GUARD::R1(C)
- Q(a);::QAB(J)+K(H),XP(c)
- Q(a);N_GUARD::R1(C),XQ(a)
- S(f);::QAB(J)+K(H)
- S(f);::QAB(J)+K(H),XS(f)
- S(g);::QAB(J)+K(H),XS(g)
- P(c);::S(I)
- P(e);::QAB(J)+K(H)
- Refutation
- Q(a);XP(A)
- Try
- S(D);CHECK,XP(c)
- Vars
- Q(a);CHECK,XS(D)::QAB(J)+K(H),XQ(a)
- Refutation
- K(b);S_FLIGHT,XR(C)
- Try
- B(B);
- Threat
- P(A)
- Vars
- Q(a);N_GUARD,XR(C)::S(D),XP(c)
- Q(a);N_GUARD::R1(C),XQ(a)
- P(c);::S(I)
- Refutation
- Q(a);
- Try
- R(C);XQ(a)
- Threat
- DUALS(2)
- Vars
- S(f);::B(B)
- P(e);::S(D),XP(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(J);
- Threat
- QAB1(J)
- Vars
- K(b);S_FLIGHT,XR(C)::S(I)
- Q(a);XP(A)::S(D),XQ(a)
- Q(a);N_GUARD::R1(C)
- Q(a);N_GUARD::R1(C),XQ(a)
- Refutation
- P(d);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- K(b);S_FLIGHT,XR(C)::QAB1(J)
- P(e);::QAB1(J)
- Refutation
- S(f);XQ(J)
- Try
- Actual
- Q(J);XP(d)
- Threat
- QAB1(J)
- Vars
- K(b);S_FLIGHT,XR(C)::S(I)
- Q(a);XP(A)::S(D),XQ(a)
- Q(a);N_GUARD::R1(C)
- Q(a);N_GUARD::R1(C),XQ(a)
- P(c);::S(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).