MESON Chess Problem Database
Problem Display
PID: 141981 (N2bB3/4n3/4p1p1/pKPk1nR1/3pbP2/3p4/N2P4/4Q3 w - - 0 1)
Lawton, Howard
British Chess Magazine, 1944
#2
9 + 10
| 14867 | BCPS Library | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Bh1
- 2.Qxh1#
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...e5
- 2.Bf7#
- 1...Bh1
- Tries
- 1.Sc1?
- 1...e5
- 2.Bf7#
- 1...Bh1
- 2.Qxh1#
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qe5#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4!
- 1...e5
- 1.Bd7?
- 1...Bh1
- 2.Bxe6#
- 2.Qxh1#
- 2.Qe5#
- 2.Qxe6#
- 1...Bg2
- 2.Bxe6#
- 2.Qe5#
- 2.Qxe6#
- 1...Bf3
- 2.Bxe6#
- 2.Qe5#
- 2.Qxe6#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...e5!
- 1...Bh1
- 1.Rxf5+?
- 1...Bxf5
- 2.Qe5#
- 1...Sxf5
- 2.Bc6#
- 1...exf5
- 2.Bf7#
- 1...e5
- 2.Bf7#
- 2.Rxe5#
- 1...gxf5!
- 1...Bxf5
- 1.Qf2?
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...e5
- 2.Bf7#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...Bh1!
- 1...Bg2
- 1.Qg3?
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...e5
- 2.Bf7#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...Bh1!
- 1...Bg2
- 1.Qd1?
- threat
- 2.Qb3#
- 1...Bh1
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...a4
- 2.Sb4#
- 1...Bg2!
- threat
- 1.Qg1?
- 1...Bh1
- 2.Qxh1#
- 1...Bg2
- 2.Qxg2#
- 1...e5
- 2.Bf7#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...Bf3!
- 1...Bh1
- 1.Qh1?
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...e5
- 2.Bf7#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...Bxh1!
- 1...Bg2
- 1.Qe2?
- 1...e5
- 2.Bf7#
- 1...Bh1
- 2.Qe5#
- 1...Bg2
- 2.Qxg2#
- 2.Qe5#
- 1...Bf3
- 2.Qxf3#
- 2.Qe5#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...dxe2!
- 1...e5
- 1.Qe3?
- 1...e5
- 2.Bf7#
- 1...Bh1
- 2.Qe5#
- 1...Bg2
- 2.Qe5#
- 1...Bf3
- 2.Qxf3#
- 2.Qe5#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...dxe3!
- 1...e5
- 1.Sc1?
- Keys
- 1.Qf1!
- 1...Bh1
- 2.Qxh1#
- 1...Bg2
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...e5
- 2.Bf7#
- 1...Bb6
- 2.Sxb6#
- 1...Bc7
- 2.Sxc7#
- 1...Sc6
- 2.Bxc6#
- 1...Sc8
- 2.Bc6#
- 1...Sg8
- 2.Bc6#
- 1...a4
- 2.Sb4#
- 1...Bh1
- 1.Qf1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(c);OGATE::QAR1(A)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- P(g);N_SPINS(f),OGATEB::B(I)
- Tries
- Try
- S(B);
- Vars
- P(g);N_SPINS(f),OGATEB::B(I)
- B(c);OGATE::QAR1(A)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- Refutation
- P(d);
- Try
- B(I);
- Vars
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- P(g);N_SPINS(f)
- Try
- R(G);CHECK,XS(f)
- Vars
- B(c);OGATE,XR(G)::QAR1(A)
- S(i);XR(G)::B(I)
- P(g);S_CUTB(c),S_CUTP(h),S_CUTS(i),XR(G)::B(I)
- Refutation
- P(h);XR(G)
- Try
- Q(A);
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(g);N_SPINS(f),OGATEB::B(I)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- B(c);
- Try
- Q(A);
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(g);N_SPINS(f),OGATEB::B(I)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- B(c);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(d);N_GUARD::S(B)
- Refutation
- B(c);
- Try
- Q(A);
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(g);N_SPINS(f),OGATEB::B(I)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- B(c);
- Try
- Q(A);P_PINB(c)
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(g);N_SPINS(f),OGATEB::B(I)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- B(c);N_SPINB(c),XQ(A)
- Try
- Q(A);
- Vars
- P(g);N_SPINS(f),OGATEB::B(I)
- B(c);OGATE::QAR1(A)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- P(a);XQ(A)
- Try
- Q(A);
- Vars
- P(g);N_SPINS(f),OGATEB::B(I)
- B(c);OGATE::QAR1(A)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
- Refutation
- P(b);XQ(A)
- Try
- Actual
- Q(A);
- Vars
- B(c);OGATEB::QAB(A),XB(c)
- P(g);N_SPINS(f),OGATEB::B(I)
- B(j);N_GUARD::S(H),XB(j)
- S(i);N_GUARD::B(I),XS(i)
- S(i);N_GUARD::B(I)
- P(d);N_GUARD::S(B)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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